Chair
AssigneeCenter for Design Research and Development N.V.
InventorEmilio Ambasz
Life of this patent
Estimating the term…
Abstract
A chair has a seat that moves forward and backward with respect to its support, preferably in such a way that the front end is elevated somewhat as the seat moves forward, and a back that pivots between a substantially upright and an inclined position, depending upon the posture assumed by one sitting in the chair. The chair is of modular construction and embodies various parts, such as legs, back supports, arm rests and writing surfaces, that are interchangeable or can be added on or left off. Modular fittings are provided to join two or more chairs together.
Claims26
A chair comprising as the sole transverse structure of a frame of the chair a beam-like member, legs attached to and dependent from the beam-like member and supporting the beam-like member at a height essentially equal to that of a chair seat, a seat, a seat support mounted on the beam-like member and including a pair of laterally spaced-apart portions extending forwardly from regions adjacent the respective ends of the beam-like member thereby to be in cantilevered relation to the beam-like member, each said portion of the seat support having an upwardly facing concave bearing surface, and the seat being supported on said portions of the seat for movement to any position between a rearward position and a forward position, and for variation of the rake of the seat in response to said movement so that the elevation of the front end of the seat as compared to the elevation of the rear end of the seat is relatively greater when the seat is in the forward position than when it is in the rearward position, by virtue of the curvatures of the bearing surfaces of said portions, a back, and means mounting the back for limited pivotal movement independently of the seat to any position between a substantially upright position and an inclined position.
A chair comprising a seat structure, a connector element at each side of the seat structure, each connector element including a key-type formation, each such formation being identical to the other, a back, a pair of back supports, each of the back supports being connected to respective sides of the back and each back support including a connector portion having a key-type formation complementary to the formations on the connector elements of the seat structure for interengagement therewith rigidly to position the back support on a respective connector element of the seat structure and a key-type formation matching the formations on the connector elements of the seat structure, a pair of leg members, each leg member having a connector portion having a key-type formation complementary to the formations on the connector elements of the seat structure for interengagement therewith rigidly to mount the leg member on the side of the seat structure in engagement with a respective back support, and fastener means securing the connector portion of each back support to a respective connector element of the seat structure and connecting a back support and a respective leg member to the respective connector element at each side of the seat structure.
Dependencies are inferred from the claim text.