USRE38397EExpiredUtility
Brush for applying a cosmetic product and make-up device comprising it
Est. expiryNov 13, 2016(expired)· nominal 20-yr term from priority
Inventors:Jean-Louis Gueret
A46B 9/028A46B 2200/1053A46B 9/021
78
PatentIndex Score
23
Cited by
85
References
205
Claims
Abstract
A brush comprises a wand defining a major axis, a flexible core which defines the length of the brush, the core having a first end and a second end, the first end being secured to the wand. Bristles are inserted radially into the core, the ends of the bristles defining an envelope surface of the brush, the envelope surface having a first end and a second end. The core describes a curve in a plane of curvature, and the envelope surface of the brush, over a least part of its length has a cross section of elongate shape in the direction of an axis of greatest length parallel to the plane of curvature.
Claims
exact text as granted — not AI-modifiedWhat is claimed as new and desired to be secured by Letters Patent of the United States is:
1. A brush comprising:
a wand defining a major axis (X—X);
a core having a first end and a second end, the first end being secured to the wand;
bristles having first ends and second ends, the first ends inserted radially into the core, and the second bristles having ends of the bristles defining an envelope surface of the brush, the envelope surface having a length, a first end, a second end, and a cross section;
The core defining a curve in a plane of curvature;
the envelope surface of the brush over at least part of its length having a cross section of elongate shape in the direction of an axis (Z—Z) of greatest length parallel to the plane of curvature.
2. A brush according to claim 1 , wherein the cross section has at least two sides in the direction of the axis (Z—Z) of greatest length, these sides being substantially parallel to the axis (Z—Z).
3. A brush according to claim 2 , wherein the cross section has at least two sides in the direction of the an axis (Y—Y), each side in the direction of the axis ( Y—Y ) having a convex shape, the axis ( Y—Y ) being perpendicular to the axis (Z—Z) of greatest length.
4. A brush according to claim 1 , wherein the cross section has at least two sides in the direction of the axis (Z—Z) of greatest length, the sides having a convex shape.
5. A brush according to claim 4 , wherein the sides of the cross section have two ends, a width of the cross section in the direction of the an axis (Y—Y) perpendicular to the axis (Z—Z) of greatest length at one of these ends being substantially zero.
6. A brush according to claim 5 , wherein the sides of the cross section have two ends, the width of the cross section in the direction of the axis (Y—Y) perpendicular to the axis (Z—Z) of greatest length at both ends being is substantially zero.
7. A brush according to claim 4 , wherein the cross section has at least two sides in the direction of the an axis (Y—Y), each side in the direction of the axis ( Y—Y ) having a convex shape, the axis ( Y—Y ) being perpendicular to the axis (Z—Z) of greatest length.
8. A brush according to claim 1 , wherein the cross section has at least two sides in the a direction of the an axis (Y—Y), each side in the direction of the axis ( Y—Y ) having a convex shape, the axis (Y—Y) being perpendicular to the axis (Z—Z) of greatest length.
9. A brush according to claim 1 , wherein the cross section has a maximum width (D) in the direction of the axis (Z—Z) of greatest length and a maximum width (d) in the direction of the an axis (Y—Y) perpendicular to the axis ( Z—Z ) of greatest length , D and d satisfying the relationship:
D>1.5d.
10. A brush according to claim 9 , wherein D and d satisfy the relationship:
D>2d.
11. A brush according to claim 1 , wherein the envelope surface has an elongate cross section over at least 50% of its length.
12. A brush according to claim 1 , wherein the envelope surface has an elongate cross section over at least 75% of its length.
13. A brush according to claim 1 , wherein the curve is substantially the shape of an arc of a circle.
14. Brush A brush according to claim 1 , characterized in that the ends of the core are aligned with the axis (X—X).
15. A method of manufacturing a brush according to claim 1 comprising the steps of:
(i) producing a starting brush comprising a wand defining a major axis (X—X), a core having a first end and a second end, securing the first end of the core to the wand, the core being straight and aligned with the wand, inserting bristles radially into the core, the end ends of the bristles defining an envelope surface of the starting brush;
(ii) trimming the bristles of the starting brush in such a way that the envelope surface of the brush over at least part of its length has a cross section of elongate shape in the direction of an axis (Z—Z) of greatest length; and
(iii) twisting the core in the a plane parallel to the axis (Z—Z) of greatest length and passing through the wand.
16. A method according to claim 15 , wherein the envelope surface of the starting brush is one of: a cylinder and a part of a cone.
17. A method according to claim 15 , wherein the envelope surface of the starting brush is convex.
18. A method according to claim 15 , wherein the envelope surface of the starting brush is axisymmetric.
19. A method according to claim 15 , further comprising the step of giving a secondary twist to that end of the core which is secured to the wand so as to align the second end of the core with the main major axis (X—X).
20. A make-up device comprising a mascara reservoir and a mascara-applicator member, characterized in that the applicator member is a brush according to claim 1 .
21. A brush according to claim 1 , wherein the bristles comprise first and second ends defining the envelope surface of the brush.
22. A brush according to claim 21 , wherein each of the bristles comprises a portion between the first and second bristle ends, wherein the core holds the portion.
23. A brush according to claim 1 , wherein the bristles comprise short bristles and long bristles, and wherein ends of the long bristles define the envelope surface of the brush.
24. A brush according to claim 1 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
25. A brush for applying a cosmetic product, the brush comprising:
a core comprising a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve,
wherein the envelope surface over at least part of its length has a cross section having an elongate shape,
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section is elongated in a direction substantially parallel to the plane of curvature.
26. A brush for applying a cosmetic product, the brush comprising:
a core comprising a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve,
wherein the envelope surface over at least part of its length has a cross section having an elongate shape,
wherein the curve defined by the core is in a plane of curvature, and
wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
27. A brush for applying a cosmetic product, the brush comprising:
a core comprising a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve,
wherein the envelope surface over at least part of its length has a cross section having an elongate shape, and
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section has a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, wherein the first width dimension is greater than the second width dimension.
28. The brush of claim 27 , wherein the first width dimension is the maximum width dimension of the cross- section.
29. The brush of claim 27 , wherein the first width dimension is greater than 1 . 5 times the second width dimension.
30. The brush of claim 27 , wherein the first width dimension is greater than 2 times the second width dimension.
31. The brush of claim 27 , wherein the bristles extend from a portion of the core defining the curve.
32. The brush of claim 27 , further comprising a wand associated with the core.
33. The brush of claim 32 , wherein the first end of the core is secured to the wand.
34. The brush of claim 33 , wherein the wand defines an axis ( X—X ) and wherein the first and second ends of the core are aligned with the axis ( X—X ) defined by the wand.
35. The brush of claim 27 , wherein the envelope surface has an elongate cross section over at least 50 % of its length.
36. The brush of claim 27 , wherein the envelope surface has an elongate cross section over at least 75 % of its length.
37. The brush of claim 27 , wherein the curve is substantially the shape of an arc of a circle.
38. The brush of claim 27 , wherein the bristles comprise first and second ends defining the envelope surface of the brush.
39. The brush of claim 38 , wherein each of the bristles comprises a portion between the first and second bristle ends, wherein the core holds the portion.
40. The brush of claim 27 , wherein the bristles comprise short bristles and long bristles, wherein ends of the long bristles define the envelope surface of the brush.
41. The brush of claim 27 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
42. The brush of claim 27 , wherein the brush is configured in the form of a mascara brush.
43. A cosmetic device comprising:
the brush of
claim 27
; and
a reservoir containing a cosmetic product.
44. The cosmetic device of claim 43 , wherein the brush is configured in the form of a mascara brush and the cosmetic product comprises mascara.
45. The cosmetic device of claim 43 , further comprising a wringing device associated with the reservoir.
46. The cosmetic device of claim 43 , wherein the reservoir is configured to removably receive the brush.
47. The cosmetic device of claim 43 , wherein the brush further comprises a wand extending from a cap configured to be connected to the reservoir, the wand being secured to the core.
48. A brush for applying a cosmetic product, the brush comprising:
a core comprising a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve,
wherein the envelope surface over at least part of its length has a cross section having an elongate shape,
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
49. The brush of claim 48 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, the at least two sides being substantially parallel to the axis ( Z—Z ).
50. The brush of claim 49 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
51. The brush of claim 48 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, each of the at least two sides having a convex shape.
52. The brush of claim 51 , wherein the at least two sides of the cross section have two ends, a width of the cross section in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at one of the two ends being substantially zero.
53. The brush of claim 52 , wherein the width of the cross section in the direction of the axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at both of the two ends is substantially zero.
54. The brush of claim 51 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
55. The brush of claim 48 , wherein the cross section has at least two sides in a direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
56. The brush of claim 48 , wherein the cross section has a maximum width ( D ) in the direction of the axis ( Z—Z ) of greatest length and a maximum width ( d ) in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, D and d satisfying the relationship:
D> 1 . 5 d.
57. The brush of claim 56 , wherein D and d satisfy the relationship;
D> 2 d.
58. A method of manufacturing a brush, comprising:
providing a starting brush comprising a core comprising a first end and a second end, and bristles extending radially from the core, the bristles comprising ends defining a starting brush envelope surface;
trimming the bristles so that the ends of the bristles define a trimmed envelope surface having over at least part of its length a cross section having an elongate shape; and
twisting the core to form a curve in the core,
wherein the twisting forms the curve in a plane of curvature, and
wherein the cross section is elongated in a direction substantially parallel to the plane of curvature.
59. A method of manufacturing a brush, comprising:
providing a starting brush comprising a core comprising a first end and a second end, and bristles extending radially from the core, the bristles comprising ends defining a starting brush envelope surface;
trimming the bristles so that the ends of the bristles define a trimmed envelope surface having over at least part of its length a cross section having an elongate shape; and
twisting the core to form a curve in the core,
wherein the twisting forms the curve in a plane of curvature, and
wherein the trimming forms first bristles and second bristles shorter than the first bristles, and wherein the first bristles extend substantially parallel to the plane of curvature and the second bristles extend substantially perpendicular to the plane of curvature.
60. A method of manufacturing a brush, comprising:
providing a starting brush comprising a core comprising a first end and a second end, and bristles extending radially from the core, the bristles comprising ends defining a starting brush envelope surface;
trimming the bristles so that the ends of the bristles define a trimmed envelope surface having over at least part of its length a cross section having an elongate shape; and
twisting the core to form a curve in the core,
wherein the twisting forms the curve in a plane of curvature, and
wherein the cross section has a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, wherein the first width dimension is greater than the second width dimension.
61. The method of claim 60 , wherein the starting brush comprises a wand.
62. The method of claim 60 , wherein the method further comprises producing the starting brush.
63. The method of claim 62 , wherein the producing of the starting brush comprises inserting the bristles between a pair of branches, twisting the branches to hold the bristles between the branches, and securing the first end of the core to a wand.
64. The method of claim 60 , wherein the core of the starting brush is straight.
65. The method of claim 60 , wherein the first width dimension is the maximum width dimension of the cross- section.
66. The method of claim 60 , wherein the starting brush comprises a wand secured to the core, wherein the core of the starting brush is straight and aligned with the wand.
67. The method of claim 60 , wherein the bristles trimmed in the trimming comprise bristles of the starting brush.
68. The method of claim 60 , wherein the starting brush envelope surface is chosen from a cylinder and a part of a cone.
69. The method of claim 60 , wherein the starting brush envelope surface is convex.
70. The method of claim 60 , wherein the starting brush envelope surface is axisymmetric.
71. The method of claim 60 , wherein the trimmed envelope surface over said at least a part of its length is non- symmetric about the core.
72. The method of claim 60 , wherein the starting brush comprises a wand secured to the first end of the core, the wand having a major axis ( X—X ) , and wherein the method further comprises making a secondary twist in an end portion of the core including the first end of the core so as to align the second end of the core with the major axis ( X—X ).
73. The method of claim 60 , wherein the curve is substantially the shape of an arc of a circle.
74. The method of claim 60 , wherein the trimming occurs before the twisting.
75. A brush for applying a cosmetic product, wherein the brush is manufactured according to the method of claim 60 .
76. A cosmetic device comprising:
the brush of
claim 75
; and
a reservoir containing a cosmetic product.
77. The cosmetic device of claim 76 , wherein the brush is configured in the form of a mascara brush, and wherein the cosmetic product comprises mascara.
78. A method of manufacturing a brush, comprising:
providing a starting brush comprising a core comprising a first end and a second end, and bristles extending radially from the core, the bristles comprising ends defining a starting brush envelope surface;
trimming the bristles so that the ends of the bristles define a trimmed envelope surface having over at least part of its length a cross section having an elongate shape; and
twisting the core to form a curve in the core,
wherein the twisting forms the curve in a plane of curvature, and
wherein the cross section is elongated in a direction substantially parallel to the plane of curvature, and,
wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
79. A brush for applying a cosmetic product, the brush comprising:
a wand;
a core on an end of the wand; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve in a plane of curvature, and
wherein the envelope surface over at least part of its length has a cross section having an elongate shape, the cross section being elongated in a direction substantially parallel to the plane of curvature.
80. A brush for applying a cosmetic product, the brush comprising:
a wand;
a core on an end of the wand; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve in a plane of curvature,
wherein the envelope surface over at least part of its length has a cross section having an elongate shape, and
wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
81. A brush for applying a cosmetic product, the brush comprising:
a wand;
a core on an end of the wand; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve in a plane of curvature, and
wherein the envelope surface over at least part of its length has a cross section having an elongate shape, the cross section having a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, the first width dimension being greater than the second width dimension.
82. A brush for applying a cosmetic product, the brush comprising:
a core having first and second ends; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve in a plane of curvature, and
wherein the envelope surface over at least part of its length has a cross section having a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in a second plane perpendicular to the first plane, the first width dimension being greater than the second width dimension.
83. The brush of claim 82 , wherein the cross section is elongated in a direction substantially parallel to the plane of curvature.
84. The brush of claim 82 , wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
85. The brush of claim 82 , wherein the first width dimension is the maximum width dimension of the cross- section.
86. The brush of claim 82 , wherein the first width dimension is greater than 1 . 5 times the second width dimension.
87. The brush of claim 82 , wherein the first width dimension is greater than 2 times the second width dimension.
88. The brush of claim 82 , wherein the bristles extend from a portion of the core defining the curve.
89. The brush of claim 82 , further comprising a wand associated with the core.
90. The brush of claim 89 , wherein the first end of the core is secured to the wand.
91. The brush of claim 90 , wherein the wand defines an axis ( X—X ) and wherein the first and second ends of the core are aligned with the axis ( X—X ) defined by the wand.
92. The brush of claim 82 , wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
93. The brush of claim 92 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, the at least two sides being substantially parallel to the axis ( Z—Z ).
94. The brush of claim 93 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
95. The brush of claim 92 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, each of the at least two sides having a convex shape.
96. The brush of claim 95 , wherein the at least two sides of the cross section have two ends, a width of the cross section in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at one of the two ends being substantially zero.
97. The brush of claim 96 , wherein the width of the cross section in the direction of the axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at both of the two ends is substantially zero.
98. The brush of claim 95 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
99. The brush of claim 92 , wherein the cross section has at least two sides in a direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
100. The brush of claim 92 , wherein the cross section has a maximum width ( D ) in the direction of the axis ( Z—Z ) of greatest length and a maximum width ( d ) in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, D and d satisfying the relationship:
D> 1 . 5 d.
101. The brush of claim 100 , wherein D and d satisfy the relationship:
D> 2 d.
102. The brush of claim 82 , wherein the envelope surface has an elongate cross section over at least 50 % of its length.
103. The brush of claim 82 , wherein the envelope surface has an elongate cross section over at least 75 % of its length.
104. The brush of claim 82 , wherein the curve is substantially the shape of an arc of a circle.
105. The brush of claim 82 , wherein the bristles comprise first and second ends defining the envelope surface of the brush.
106. The brush of claim 105 , wherein each of the bristles comprises a portion between the first and second bristle ends, wherein the core holds the portion.
107. The brush of claim 82 , wherein the bristles comprise short bristles and long bristles, wherein ends of the long bristles define the envelope surface of the brush.
108. The brush of claim 82 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
109. The brush of claim 82 , wherein the brush is configured in the form of a mascara brush.
110. A cosmetic device comprising:
the brush of
claim 82
; and
a reservoir containing a cosmetic product.
111. The cosmetic device of claim 110 , wherein the brush is configured in the form of a mascara brush and the cosmetic product comprises mascara.
112. The cosmetic device of claim 110 , further comprising a wringing device associated with the reservoir.
113. The cosmetic device of claim 110 , wherein the reservoir is configured to removably receive the brush.
114. The cosmetic device of claim 110 , wherein the brush further comprises a wand extending from a cap configured to be connected to the reservoir, the wand being secured to the core.
115. A brush for applying a cosmetic product, the brush comprising:
a wand;
a core on an end of the wand; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, and a second end,
wherein the core defines a curve in a plane of curvature, and
wherein the envelope surface over at least part of its length has a cross section having an elongate shape in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
116. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve in a plane of curvature, the curve having a concave side and a convex side,
wherein over at least a part of the length of the envelope surface,
a ) in the plane of curvature, the envelope surface is spaced a first distance from the concave side of the curve defined by the core, and
b ) in a plane perpendicular to the plane of curvature, the envelope surface is spaced a second distance from the core, and
wherein the first distance is greater than the second distance.
117. The brush of claim 116 , wherein the envelope surface is spaced a third distance from the convex side of the curve defined by the core, wherein the third distance is greater than the second distance.
118. The brush of claim 117 , wherein the third distance equals the first distance.
119. The brush of claim 116 , wherein over said at least a part of the length of the envelope surface, in the plane perpendicular to the plane of curvature, the core is positioned between first and second portions of the envelope surface, and wherein the second distance is a distance from the first portion of the envelope surface to the core.
120. The brush of claim 119 , wherein the distance from the second portion of the envelope surface to the core is equal to the second distance.
121. The brush of claim 116 , wherein over said at least a part of the length of the envelope surface, the cross- section of the envelope surface has an elongate shape.
122. The brush of claim 121 , wherein the cross section is elongated in a direction substantially parallel to the plane of curvature.
123. The brush of claim 116 , wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
124. The brush of claim 116 , wherein over said at least a part of the length of the envelope surface, the cross section of the envelope surface has a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, the first width dimension being greater than the second width dimension.
125. The brush of claim 124 , wherein the first width dimension is the maximum width dimension of the cross- section.
126. The brush of claim 124 , wherein the first width dimension is greater than 1 . 5 times the second width dimension.
127. The brush of claim 124 , wherein the first width dimension is greater than 2 times the second width dimension.
128. The brush of claim 116 , wherein the bristles extend from a portion of the core defining the curve.
129. The brush of claim 116 , further comprising a wand associated with the core.
130. The brush of claim 129 , wherein the first end of the core is secured to the wand.
131. The brush of claim 130 , wherein the wand defines an axis ( X—X ) and wherein the first and second ends of the core are aligned with the axis ( X—X ) defined by the wand.
132. The brush of claim 116 , wherein the cross section is non- symmetric about the core.
133. The brush of claim 116 , wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
134. The brush of claim 133 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, the at least two sides being substantially parallel to the axis ( Z—Z ).
135. The brush of claim 134 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
136. The brush of claim 133 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, each of the at least two sides having a convex shape.
137. The brush of claim 136 , wherein the at least two sides of the cross section have two ends, a width of the cross section in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at one of the two ends being substantially zero.
138. The brush of claim 137 , wherein the width of the cross section in the direction of the axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at both of the two ends is substantially zero.
139. The brush of claim 136 , wherein the cross section has at least two sides in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
140. The brush of claim 133 , wherein the cross section has at least two sides in a direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, each of the at least two sides in the direction of the axis ( Y—Y ) having a convex shape.
141. The brush of claim 133 , wherein the cross section has a maximum width ( D ) in the direction of the axis ( Z—Z ) of greatest length and a maximum width ( d ) in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, D and d satisfying the relationship:
D> 1 . 5 d.
142. The brush of claim 141 , wherein D and d satisfy the relationship:
D> 2 d.
143. The brush of claim 116 , wherein the envelope surface has an elongate cross section over at least 50 % of its length.
144. The brush of claim 116 , wherein the envelope surface has an elongate cross section over at least 75 % of its length.
145. The brush of claim 116 , wherein the curve is substantially the shape of an arc of a circle.
146. The brush of claim 116 , wherein the bristles comprise first and second ends defining the envelope surface of the brush.
147. The brush of claim 116 , wherein each of the bristles comprises a portion between the first and second bristle ends, wherein the core holds the portion.
148. The brush of claim 116 , wherein the bristles comprise short bristles and long bristles, wherein ends of the long bristles define the envelope surface of the brush.
149. The brush of claim 116 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
150. The brush of claim 116 , wherein the brush is configured in the form of a mascara brush.
151. A cosmetic device comprising:
the brush of
claim 116
; and
a reservoir containing a cosmetic product.
152. The cosmetic device of claim 151 , wherein the brush is configured in the form of a mascara brush and the cosmetic product comprises mascara.
153. The cosmetic device of claim 151 , further comprising a wringing device associated with the reservoir.
154. The cosmetic device of claim 151 , wherein the reservoir is configured to removably receive the brush.
155. The cosmetic device of claim 151 , wherein the brush further comprises a wand extending from a cap configured to be connected to the reservoir, the wand being secured to the core.
156. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve in a plane of curvature, the curve having a concave side and a convex side, and
wherein over at least a part of the length of the envelope surface,
a ) in a plane parallel to the plane of curvature, the envelope surface is spaced a first distance from the convex side of the curve defined by the core, and
b ) in a plane perpendicular to the plane of curvature, the envelope surface is spaced a second distance from the core, and
wherein the first distance is greater than the second distance.
157. The brush of claim 156 , wherein over said at least a part of the length of the envelope surface, in the plane perpendicular to the plane of curvature, the core is positioned between first and second portions of the envelope surface, wherein the second distance is a distance from the first portion of the envelope surface to the core.
158. The brush of claim 157 , wherein the distance from the second portion of the envelope surface to the core is equal to the second distance.
159. The brush of claim 156 , wherein over said at least a part of the length of the envelope surface, the cross- section of the envelope surface has an elongate shape.
160. The brush of claim 159 , wherein the cross section is elongated in a direction substantially parallel to the plane of curvature.
161. The brush of claim 156 , wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
162. The brush of claim 156 , wherein over said at least a part of the length of the envelope surface, the cross section of the envelope surface has a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, the first width dimension being greater than the second width dimension.
163. The brush of claim 156 , wherein the bristles extend from a portion of the core defining the curve.
164. The brush of claim 156 , further comprising a wand associated with the core.
165. The brush of claim 164 , wherein the first end of the core is secured to the wand.
166. The brush of claim 156 , wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
167. The brush of claim 156 , wherein the envelope surface has an elongate cross section over at least 50 % of its length.
168. The brush of claim 156 , wherein the envelope surface has an elongate cross section over at least 75 % of its length.
169. The brush of claim 156 , wherein the curve is substantially the shape of an arc of a circle.
170. The brush of claim 156 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
171. The brush of claim 156 , wherein the brush is configured in the form of a mascara brush.
172. A cosmetic device comprising:
the brush of
claim 156
; and
a reservoir containing a cosmetic product.
173. The cosmetic device of claim 172 , wherein the brush is configured in the form of a mascara brush and the cosmetic product comprises mascara.
174. The cosmetic device of claim 172 , further comprising a wringing device associated with the reservoir.
175. The cosmetic device of claim 172 , wherein the reservoir is configured to removably receive the brush.
176. The cosmetic device of claim 172 , wherein the brush further comprises a wand extending from a cap configured to be connected to the reservoir, the wand being secured to the core.
177. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve,
wherein the envelope surface over at least a part of its length is non - symmetric about the core,
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section is elongate d in a direction substantially parallel to the plane of curvature.
178. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve,
wherein the envelope surface over at least a part of its length is non - symmetric about the core,
wherein the curve defined by the core is in a plane of curvature, and
wherein the bristles comprise first bristles extending substantially parallel to the plane of curvature and second bristles extending substantially perpendicular to the plane of curvature, the first bristles being longer than the second bristles.
179. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve,
wherein the envelope surface over at least a part of its length is non - symmetric about the core,
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section has a first width dimension in a first plane parallel to the plane of curvature and a second width dimension in second plane perpendicular to the first plane, wherein the first width dimension is greater than the second width dimension.
180. The brush of claim 179 , wherein over said at least a part of the length of the envelope surface, the cross- section of the envelope surface has an elongate shape.
181. The brush of claim 179 , wherein the first width dimension is the maximum width dimension of the cross- section.
182. The brush of claim 179 , wherein the first width dimension is greater than 1 . 5 times the second width dimension.
183. The brush of claim 179 , wherein the first width dimension is greater than 2 times the second width dimension.
184. The brush of claim 179 , wherein the bristles extend from a portion of the core defining the curve.
185. The brush of claim 179 , further comprising a wand associated with the core.
186. The brush of claim 185 , wherein the first end of the core is secured to the wand.
187. The brush of claim 186 , wherein the wand defines an axis ( X—X ) and wherein the first and second ends of the core are aligned with the axis ( X—X ) defined by the wand.
188. The brush of claim 179 , wherein the envelope surface has an elongate cross section over at least 50 % of its length.
189. The brush of claim 179 , wherein the envelope surface has an elongate cross section over at least 75 % of its length.
190. The brush of claim 179 , wherein the curve is substantially the shape of an arc of a circle.
191. The brush of claim 179 , wherein the bristles comprise first and second ends defining the envelope surface of the brush.
192. The brush of claim 191 , wherein each of the bristles comprises a portion between the first and second bristle ends, wherein the core holds the portion.
193. The brush of claim 179 , wherein the bristles comprise short bristles and long bristles, wherein ends of the long bristles define the envelope surface of the brush.
194. The brush of claim 179 , wherein the core comprises first and second branches, the first and second branches being helically twisted and holding bristles between the branches.
195. The brush of claim 179 , wherein the brush is configured in the form of a mascara brush.
196. A cosmetic device comprising:
the brush of
claim 179
; and
a reservoir containing a cosmetic product.
197. The cosmetic device of claim 196 , wherein the brush is configured in the form of a mascara brush and the cosmetic product comprises mascara.
198. The cosmetic device of claim 196 , further comprising a wringing device associated with the reservoir.
199. The cosmetic device of claim 196 , wherein the reservoir is configured to removably receive the brush.
200. The cosmetic device of claim 196 , wherein the brush further comprises a wand extending from a cap configured to be connected to the reservoir, the wand being secured to the core.
201. A brush for applying a cosmetic product, the brush comprising:
a core having a first end and a second end; and
bristles extending radially from the core, the bristles comprising ends defining an envelope surface of the brush, the envelope surface comprising a length, a first end, a second end, and a cross section,
wherein the core defines a curve,
wherein the envelope surface over at least a part of its length is non - symmetric about the core,
wherein the curve defined by the core is in a plane of curvature, and
wherein the cross section is elongated in the direction of an axis ( Z—Z ) of greatest length parallel to the plane of curvature.
202. The brush of claim 201 , wherein the cross section has at least two sides in the direction of the axis ( Z—Z ) of greatest length, each of the at least two sides having a convex shape.
203. The brush of claim 202 , wherein the at least two sides of the cross section have two ends, a width of the cross section in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length at one of the two ends being substantially zero.
204. The brush of claim 201 , wherein the cross section has a maximum width ( D ) in the direction of the axis ( Z—Z ) of greatest length and a maximum width ( d ) in the direction of an axis ( Y—Y ) perpendicular to the axis ( Z—Z ) of greatest length, D and d satisfying the relationship:
D> 1 . 5 d.
205. The brush of claim 204 , wherein D and d satisfy the relationship:
D> 2 d.Join the waitlist — get patent alerts
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