Chair lift apparatus

Details

Inventors: Kuhlman, Harvey G.;
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:

A lift mechanism apparatus for transferring of persons of limited mobility to and from a restricted area such as a raised tub-like water treating facility and in particular such an apparatus which is particularly adapted for transfer from and to a wheelchair without requirement of the individual standing during the transfer process.

DETAILED DESCRIPTION I claim: 1.
A power chair lift apparatus for moving of a person from and to a restricted area, comprising a horizontal hydraulic piston-cylinder power unit adapted to be rigidly affixed in upwardly spaced relation above a restricted area and having a movable member movable transversely into and from said area, a carriage secured to said movable member of said horizontal hydraulic power unit for selective positive positioning in alignment with the restricted area and outside said restricted area, a chair lift power piston-cylinder unit fixedly secured to said carriage and depending downwardly thereform to define a firm support, said chair power piston-cylinder unit including a vertically movable member, a chair unit secured directly to said movable member of said chair power unit for corresponding positive vertical positioning, hydraulic fluid supply means for said power piston-cylinder units, and a control means for selectively connecting said hydraulic fluid supply means to the opposite ends of said power units for corresponding positioning of the carriage and the chair.
2.
The chair lift apparatus of claim 1 wherein said hydraulic fluid supply means is secured to said carriage and includes an electrically controlled valve means, and a low voltage control unit connected by a low voltage cable to said control unit for controlling said electrically controlled valve means.
3.
The apparatus of claim 1 wherein said chair unit consists of a rigid frame, a rigid seat member secured to said frame and a rigid back member secured to said frame, said back member being rigidly affixed to said depending power cylinder unit for vertical positioning of said chair, said depending power cylinder being free to swivel for selective positioning of the chair.
4.
The apparatus of claim 1 wherein said chair includes a substantially rigid seat and having an extendable support means secured to said chair and adopted to be extended outwardly or a rigid extension substantially in the plane of the chair seat

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