Foldable Chair

Abstract

A foldable chair includes a chair seat and a foldable frame having two stand frames parallelly and spacedly aligned with each other, wherein each of the stand frames comprises a first crossed leg and a second crossed leg connected to the first crossed leg at a pivot point,. The chair seat is mounted to the first crossed leg and the second crossed leg in such a manner that the chair seat is extended between the two stand frames for a user to sit thereon when the foldable chair is in an unfolded condition.

What is claimed is: 
     
         1 . A foldable chair, adapted to be folded between a folded condition and an unfolded condition, comprising:
 a chair seat, and   a foldable frame comprising two stand frames substantially aligned parallelly and spacedly with each other, wherein each of said stand frames comprises a first crossed leg and a second crossed leg connected to said first crossed leg at a pivot point, wherein said chair seat is mounted to said first crossed leg and said second crossed leg in such a manner that said chair seat is able to be extended between said two stand frames for a to user to sit thereon when said foldable chair is in said unfolded condition   
     
     
         2 . The foldable chair, as recited in  claim 1 , wherein said first crossed leg and said crossed leg are constructed in arc shape, wherein an upper portion of said first crossed leg and a corresponding upper portion of said second crossed leg define an unfolding angle of said foldable frame in said unfolded condition in such a manner that said chair seat is resting on said upper portions of said first crossed leg and a corresponding upper portion of said second crossed leg at a position above said pivot point. 
     
     
         3 . The foldable chair, as recited in  claim 2 , wherein said chair seat comprises a seat member having a first end and a second end, wherein said first end of said seat member is mounted to said upper portion of said first crossed leg and said second end of said seat member is mounted to said upper portion of said second crossed leg. 
     
     
         4 . The foldable chair, as recited in  claim 3 , wherein said seat member comprises two retention pockets provided at two corners of said first end of said seat member respectively, wherein each upper end of said upper portion of said first crossed leg is received in each of said retention pockets, wherein said seat member has two retention holes provided at two corners of said second end of said seat member respectively, wherein each said second crossed leg is secured to said second end of said seat member by passing through each of said retention holes. 
     
     
         5 . The foldable chair, as recited in  claim 2 , wherein said chair seat is made of soft material. 
     
     
         6 . The foldable chair, as recited in  claim 4 , wherein said chair seat is made of soft material. 
     
     
         7 . The foldable chair, as recited in  claim 5 , wherein said second crossed leg further comprises a block provided on said upper portion thereof, wherein said block is firmly mounted on said upper portion of said second crossed leg so as to block a downward movement of second end of said seat member. 
     
     
         8 . The foldable chair, as recited in  claim 6 , wherein said second crossed leg further comprises a block provided on said upper portion thereof, wherein said block is firmly mounted on said upper portion of said second crossed leg so as to block a downward movement of second end of said seat member. 
     
     
         9 . The foldable chair, as recited in  claim 5 , wherein said chair seat comprises a plurality of fasteners provided on an edge of said seat member of said chair seat for grasping said upper portions of said first crossed leg and said second crossed leg so that a downward force applied on said chair seat is distributed by said first crossed leg and said second crossed leg. 
     
     
         10 . The foldable chair, as recited in  claim 8 , wherein said chair seat comprises a plurality of fasteners provided on an edge of said seat member of said chair seat for grasping said upper portions of said first crossed leg and said second crossed leg so that a downward force applied on said chair seat is distributed by said first crossed leg and said second crossed leg. 
     
     
         11 . The foldable chair, as recited in  claim 5 , wherein said foldable frame further comprises a first support and a second support mounted to said two stand frames so as to enhance said stability of said foldable frame in said unfolded condition. 
     
     
         12 . The foldable chair, as recited in  claim 10 , wherein said foldable frame further comprises a first support and a second support mounted to said two stand frames so as to enhance said stability of said foldable frame in said unfolded condition. 
     
     
         13 . The foldable chair, as recited in  claim 12 , wherein said first support comprises two first support arms connected with each other at a first crossed point, wherein said second support comprises two second support arms connected to each other at a second crossed point. 
     
     
         14 . The foldable chair, as recited in  claim 13 , wherein said two first support arms are connected to said two stand frames in such a manner that a lower end of each of said two first support arms is pivotally mounted to said lower portion of said first crossed leg and an upper end of each of said two first support arms is mounted to said upper portion of said second crossed leg, wherein said two second support arms are mounted to said two stand frames in such a manner that a lower end of each of said two second support arms is pivotally mounted to said lower portion of said second crossed leg and an upper end of each of said two second support arms is mounted to said upper portion of said first crossed leg. 
     
     
         15 . The foldable chair, as recited in  claim 13 , wherein said two first support arms are connected to said two stand frames in such a manner that a lower end of each of said two first support arms is pivotally mounted to a lower end of said first crossed leg and an upper end of each of said two first support arms is mounted to an upper end of said second crossed leg, wherein said two second support arms are mounted to said two stand frames in such a manner that a lower end of each of said two second support arms is pivotally mounted to a lower end of said second crossed leg and an upper end of each of said two second support arms is mounted to an upper end of said first crossed leg. 
     
     
         16 . The foldable chair, as recited in  claim 14 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members comprises a base, a joint member mounting said base to one of said first crossed leg and said second crossed leg, and two retention ribs spacedly and parallelly extended from said base, wherein said lower end of one of said corresponding first support arm and second support arm is pivotally mounted between said two retention ribs. 
     
     
         17 . The foldable chair, as recited in  claim 15 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members comprises a base, a joint member mounting said base to one of said first crossed leg and said second crossed leg, and two retention ribs spacedly and parallelly extended from said base, wherein said lower end of one of said corresponding first support arm and second support arm is pivotally mounted between said two retention ribs. 
     
     
         18 . The foldable chair, as recited in  claim 14 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members is protrudedly extended from one of said first crossed leg and said second crossed leg, wherein each of said corresponding first support arms and second support arms comprises two retention ribs spacedly and paralledly extended from said lower end thereof, wherein said retention member is mounted between said two retention ribs. 
     
     
         19 . The foldable chair, as recited in  claim 15 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members is protrudedly extended from one of said first crossed leg and said second crossed leg, wherein each of said corresponding first support arms and second support arms comprises two retention ribs spacedly and paralledly extended from said lower end thereof, wherein said retention member is mounted between said two retention ribs. 
     
     
         20 . The foldable chair, as recited in  claim 14 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members is protrudedly extended from one of said first crossed leg and said second crossed leg, wherein said retention member has a mounting hole for one of said corresponding first support arm and second support arm to pass therethrough. 
     
     
         21 . The foldable chair, as recited in  claim 14 , wherein said foldable frame further comprises a plurality of retention members connecting said two stand frames with said first support and said second support, wherein each of said retention members comprises a retention body having a mounting hole, wherein said first crossed leg passes through said mounting hole in such a manner that said lower portion of one of said first crossed leg and said second crossed leg is mounted to said retention body, wherein said retention member further comprises a retention element having a base and two retention ribs parallelly and spacedly extended from said base, wherein said lower end of one of said corresponding first support arm and second support arm is pivotally mounted between said two retention ribs. 
     
     
         22 . The foldable chair, as recited in  claim 14 , wherein each of said two stand frames comprises a stopper protrudedly extended from said first crossed leg at said pivot point, wherein said stopper has a mounting hole for said second crossed leg to pass therethrough so that said second crossed leg is movably connected to said first crossed leg. 
     
     
         23 . The foldable chair, as recited in  claim 21 , wherein each of said two stand frames comprises a stopper protrudedly extended from said first crossed leg at said pivot point, wherein said stopper has a mounting hole for said second crossed leg to pass therethrough so that said second crossed leg is movably connected to said first crossed leg. 
     
     
         24 . The foldable chair, as recited in  claim 23 , further comprising four supporting pads each comprising a pad body and a tube portion protruded from said pad body, wherein said lower ends of said first crossed leg and said lower ends of said second crossed leg are received in said tube portions in such a manner that said first crossed leg and said second crossed leg are wrapped and supported by said supporting pads. 
     
     
         25 . The foldable chair, as recited in  claim 2 , wherein said second crossed leg further comprises a mounting arm integrally and inclinedly extended from said upper portion of said second crossed leg in such a manner that said mounting arm of said second crossed leg stands in an upright direction when said foldable chair is in said unfolded condition, wherein said foldable frame further comprises two armrests each extended between said mounting arm of said second crossed leg and said first crossed leg. 
     
     
         26 . The foldable chair, as recited in  claim 24 , wherein said second crossed leg further comprises a mounting arm integrally and inclinedly extended from said upper portion of said second crossed leg in such a manner that said mounting arm of said second crossed leg stands in an upright direction when said foldable chair is in said unfolded condition, wherein said foldable frame further comprises two armrests each extended between said mounting arm of said second crossed leg and said first crossed leg. 
     
     
         27 . The foldable chair, as recited in  claim 25 , wherein each said armrest comprises an armrest body which is pivotally and vertically extended form said mounting arm of said second crossed leg, and a pivot arm having a first end pivotally and movably connected to said armrest body and a second end pivotally and movably connected to said first crossed leg in such a manner that said armrest body is capable of rotating about said first crossed leg. 
     
     
         28 . The foldable chair, as recited in  claim 26 , wherein each said armrest comprises an armrest body which is pivotally and vertically extended form said mounting arm of said second crossed leg, and a pivot arm having a first end pivotally and movably connected to said armrest body and a second end pivotally and movably connected to said first crossed leg in such a manner that said armrest body is capable of rotating about said first crossed leg. 
     
     
         29 . The foldable chair, as recited in  claim 25 , wherein each said armrest comprises a soft armrest body which is made of same material of said chair seat. 
     
     
         30 . The foldable chair, as recited in  claim 26 , wherein each said armrest comprises a soft armrest body which is made of same material of said chair seat.