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US 4,061,397 AGranted
Drive mechanism for reclining chairs
OwnerMichael Roland Lewisinventor
Life of this patent
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Abstract
The drive mechanism complements the existing mechanical linkage in a conventional reclining chair, and comprises an electric motor which operates through a series of levers to enable the normal movement of the chair between its upright and reclined positions to be powered. The mechanism is designed to follow the locus of movement of the existing mechanical linkage, thus rendering unnecessary any modifications to the linkage.
Claims8
A drive mechanism for a reclining chair or the like comprising:
- an electric motor mounted on a chair frame;
- manually operable switch means for selectively supplying electric power to said motor;
- a shaft driven by said motor;
- a crank lever attached to said shaft;
- a bracket;
- flexible means for attaching said bracket to a seat of the chair;
- said flexible means comprising an elongate member extending transversely across the underside of the seat;
- said elongate member having its ends attached to the seat;
- a portion of said bracket being fixedly attached to a central part of said elongate member;
- a link member having one end pivotally connected to said crank lever such that the locus of movement of the pivot point is circular and having its other end pivotally connected to another portion of said bracket;
- said bracket and said elongate member being movable in both a horizontal and a vertical direction, whereby said seat is movable over a substantially horizontal first arc and a substantially vertical second arc.
8 more elements
Dependencies are inferred from the claim text.