Abstract: A sheath structure (10) for use as a backrest for a chair or as a seat, envelope, wallet, purse, handbag, panel, etc., comprising pliable sheet material (32) stretched on a frame (20)and presenting spaced-apart front and rear exterior surfaces (33, 39). The frame is made up of at least two spaced-apart front and rear frame elements (26, 24), each corresponding to the front and rear exterior surfaces (33, 39). The frame elements define an intermediate space therebetween. The sheet material (32) forms the front and rear exterior surfaces (33, 39), extends over the frame elements (26, 24), and is tucked in within the intermediate space, and tension means, such as elastics (38), cooperate with respective tucked-in portions of the sheet material (32) so as to stretch the sheet material on the frame.

Abstract: A foldable chair comprising a seat portion made of a sheet of flexible material such as canvas, fabric, leather or plastic supported by a pair of rectangular support frames hinged relative to each other and crossing each other along an intermediary hinge line such as to form a figure X when supported from the ground and viewed from the front. The flexible seat portion is frictionally held at its ends as a result of being wrapped around and passed between a pair of parallel lateral tie members forming part of each support frame or, alternatively, forming part of an armrest in chair structures including a back supporting portion.

Abstract: Contoured furniture, such as chairs and tables, made of elongated profiled slats disposed substantially parallel to each other in at least two separate groups. The profiled and contoured slats in each group are attached together in spaced relationship at least at one of their ends, and the two groups of slats are interlaced along a crossing hinge area, such as to form an X-shaped piece of furniture when viewed from a side. Tension rod members are provided for rigidly holding the two groups of interlaced contoured slats relative to each other.

Abstract: A structure for a chair comprising a pair of substantially identical modular units each consisting of at least a pair of parallel bowed arcuate ground support members each shaped substantially as an arc of a circle and maintained in spaced relationship parallel to each other at their end by a cross-bar member to which are attached spaced apart stretched elongated flat bands or straps of plastic material, leather or fabric disposed substantially along the chord of the circular arc formed by the support members. Two basic modular units are longitudinally intermeshed together and angularly disposed to form a chair having a back supporting area and a seat supporting area defined by the exposed chordal straps of each modular unit.

Abstract: A foldable chair made of four separate frame members mounted hingeable around a common axis. One of the frame members is provided with a length of stretched fabric, such as canvas, and forms the seat of the chair. Another of the frame members is similarly provided with a length of stretched fabric, such as canvas, and forms the back of the chair. The other frame members form the feet of the chair. When the chair is in normal use, the four frame members are held in angular position relative to each other about their common hinging axis by means of tension cables. The chair is folded by rotating the diverse frame members around their common hinging axis to a position wherein the diverse frame members nest substantially within each other and are disposed substantially coplanar with each other.