Abstract: Disclosed is a stackable chair containing a flexible back support frame mechanism that includes an improved spring system designed to allow reclining movement of a back support frame relative to a seat assembly. The back support frame and seat assembly are connected using right and left spring members disposed in a substantial surface-to-surface contact relationship with the seat assembly and back support frame members.

Abstract: Disclosed is a stackable chair containing a flexible back support frame mechanism that includes an improved spring system designed to allow reclining movement of a back support frame relative to a seat assembly. The back support frame and seat assembly are connected using right and left spring members disposed in a substantial surface-to-surface contact relationship with the seat assembly and back support frame members.

Abstract: A chair frame (10) for a stackable chair. The chair frame (10) includes a seat support portion (12) for support the seat portion (18) of a chair, and includes a pair of leg assemblies (22, 24) oppositely disposed on either side of the seat support portion (12). Each leg assembly (22, 24) includes a front leg (26) and a rear leg (28), and an upper support member (30). Each upper support member (30) has an upper surface (38), at least a portion of which defines a curvilinear surface portion. Each leg assembly (22, 24) also includes a stacking bar (32) extending between the front leg (26) and the rear leg (28), the stacking bar (32) being disposed below, and being selectively space from, the upper support member (30).

Abstract: A chair frame (10) for a stackable chair. The chair frame (10) includes a seat support (12) for supporting the seat (22) of the stackable chair, the seat support (12) of the frame (10) defining first and second side frame portions (18, 20). The chair frame (10) also includes first and second front leg members (24, 26) and first and second rear leg members (28, 30) extending downwardly from the seat support (12). A back support (36) is secured to the seat support (12), the back support (36) defining first and second side portions (38, 40) and a lower frame portion (44) disposed between the first and second side portions (38, 40) of the back support (36). Also included are first and second bracing structures (46, 48) extending between the seat support (12) and the back support (36), whereby the bracing structures (46, 48) strengthen the engagement of the seat support (12) with the back support (36).

Abstract: A molded foam spring seat includes a seat cushion having a bottom surface supported by a support frame having an opening therein. A drop-in frame is insertable within the opening, with the drop-in frame including a pair of opposed walls having fastening means thereon. A plurality of compression springs are each detachably extended between the fastening means on the drop-in frame. Each compression spring is in partial compression until compressed downward by a user seated on the seat cushion. Each compression spring resiliently rebounds to partial compression when the seat cushion is not compressed. The seat cushion includes sides tapered inwardly toward a seat cushion upper surface to reduce bulging of each side outwards with repetitive use of the seat cushion, and to minimize wear on the seat cushion sides when other seat cushions and support frames are positioned adjacent, or are stacked on the seat cushion.

Abstract: A stackable chair is provided which is configured to alter the forward shift of the center of gravity of a stack of the chairs such that a larger number of such chairs can be stacked in a stable stack as compared to a stack of prior art chairs. The stackable chair includes a seat member, a seat back extending from the seat member, a plurality of legs secured to the seat member and a seat pan secured to the bottom of the seat member. The seat member defines a wedge shape and the seat pan is disposed at angle with respect to the seat member. The seat member and the seat pan cooperate to alter the forward shift of the center of gravity to an arcuate path when the chairs are placed in a stack. Further, the seat pan is configured to protect the seat cushion upon which it rests against indentations.