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US 4,538,853 AGranted
Chair for handicapped persons
OwnerNat Levenberginventor
Life of this patent
Estimating the term…
Abstract
A chair with resilient means for assisting an occupant in raising himself to a standing position. The seat cushion pivots relative to the chair frame about an axis near the rearward edge thereof, movement serving to at least partially simultaneously elevate the arm rests as well. When the chair is occupied, resilient struts are compressed, and the seat may be manually locked in position against strut compression.
Claims2
A chair construction for use by handicapped persons comprising:
- a relatively rigid frame element and a moveable seat element;
- said frame element including a plurality of frame members providing a fixed horizontal platform at normal seat height, and generally vertically oriented support means at one side of said horizontal platform;
- a fixed back cushion supported by said last-mentioned support means;
- a seat bottom cushion mounted on said platform for pivotal movement on an axis parallel to and adjacent a rear transvers edge thereof;
- a plurality of resiliently compressible members interconnecting said frame element and an undersurface of said bottom cushion forwardly of said axis;
- a pair of arm rests each including a pivotally interconnected horizontal and vertical strut;
- said horizontal strut being pivotally connected at the rear end thereof to said frame element at a point adjacent said fixed back cushion, said vertical strut being connected at a lower end to said seat cushion forwardly of said resiliently compressible members;
- whereby upward movement of said seat cushion results in corresponding movement of said arm rests;
- and a locking means manually controllable from said arm rests for fixing the position of said seat cushion in substantially horizontal position against the compressive force of said resiliently compressible elements.
6 more elements
Dependencies are inferred from the claim text.