Foldable chair

Abstract

A foldable chair includes a chair seat, a foldable frame having two stand frames substantially aligned parallelly and spacedly with each other, wherein each of said two stand frames includes a first crossed leg and a second crossed leg; and two stand stoppers mounted to said two stand frames respectively, wherein each of said two stand stoppers connects said first crossed leg with said second crossed leg at a pivot point, so that said first crossed leg rotates with respect to said second crossed leg between a folded condition and an unfolded condition, wherein said chair seat is extended between said two stand frames to define a sitting surface for a user to sit on when said foldable chair is in said unfolded condition.

What is claimed is: 
     
         1 . A foldable chair, comprising:
 a chair seat;   a foldable frame comprising two stand frames parallelly and spacedly aligned with each other, wherein each of said two stand frames comprises a first crossed leg and a second crossed leg; and   two stand stoppers mounted to said two stand frames respectively, wherein each of said two stand stoppers connects said first crossed leg with said second crossed leg at a pivot point, so that said first crossed leg rotates with respect to said second crossed leg between a folded condition and an unfolded condition, wherein said chair seat is extended between said two stand frames to define a sitting surface for a user to sit on when said foldable chair is in said unfolded condition.   
     
     
         2 . The foldable chair, as recited in  claim 1 , wherein each of said two stand stoppers comprises a stopper body having a receiving hole, wherein said stopper body is mounted to said second crossed leg, wherein said first crossed leg passes through said receiving hole. 
     
     
         3 . The foldable chair, as recited in  claim 1 , wherein each of said two stand stoppers comprises a first joint member and a second joint member, wherein said stand stopper body is mounted to said second crossed leg by said first joint member, and said stopper body is mounted to said first crossed leg by said second joint member, wherein said first crossed leg rotates with respect to said second crossed leg about said stand stopper. 
     
     
         4 . The foldable chair, as recited in  claim 2 , wherein each of said two stand stoppers comprises a first joint member and a second joint member, wherein said stand stopper body is mounted to said second crossed leg by said first joint member, and said stopper body is mounted to said first crossed leg by said second joint member, wherein said first crossed leg rotates with respect to said second crossed leg about said stand stopper. 
     
     
         5 . The foldable chair, as recited in  claim 4 , 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. 
     
     
         6 . The foldable chair, as recited in  claim 1 , 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, wherein said first support comprises two first support arms connected to 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. 
     
     
         7 . 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, wherein said first support comprises two first support arms connected to 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. 
     
     
         8 . The foldable chair, as recited in  claim 6 , further comprising two support stoppers mounting said two first support arms and said two second support arms respectively. 
     
     
         9 . The foldable chair, as recited in  claim 7 , further comprising two support stoppers mounting said two first support arms and said two second support arms respectively. 
     
     
         10 . The foldable chair, as recited in  claim 8 , 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 portions of said first crossed leg. 
     
     
         11 . The foldable chair, as recited in  claim 9 , 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 portions of said first crossed leg. 
     
     
         12 . The foldable chair, as recited in  claim 10 , wherein each of said two stand frames further comprises a mounting arm integrally and inclinedly extended from said upper portion of said second crossed leg g 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 armrest each extended between said mounting arm of said second crossed leg and said first crossed leg. 
     
     
         13 . The foldable chair, as recited in  claim 11 , wherein each of said two stand frames 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 armrest each extended between said mounting arm of said second crossed leg and said first crossed leg. 
     
     
         14 . The foldable chair, as recited in  claim 12 , 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. 
     
     
         15 . The foldable chair, as recited in  claim 13 , 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 
     
     
         16 . The foldable chair, as recited in  claim 14 , 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. 
     
     
         17 . The foldable chair, as recited in  claim 16 , wherein said chair seat is made of soft material. 
     
     
         18 . The foldable chair, as recited in  claim 17 , wherein said chair seat comprises a plurality of fasteners provided on the 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 said downward force applied on said chair seat is distributed by said first crossed leg and said second crossed leg. 
     
     
         19 . The foldable chair, as recited in  claim 3 , wherein said chair seat comprises a rigid seat member, wherein said seat member is supported by said two stand frames. 
     
     
         20 . The foldable chair, as recited in  claim 19 , further comprising two retention arms extended between said two stand frames respectively to maintain a distance between said two stand frames.