Martha J Anderson

US Patent:

39368939, Feb 10, 1976

Filed:

Jul 22, 1974

Appl. No.:

5/490396

Inventors:

Martha A. Anderson - Campbell CA
Robert M. Anderson - Campbell CA

International Classification:

A61G 0102

US Classification:

5 81R

Abstract:

The elevation of a chair seat from normal to raised bed level by cam action between the chair seat and a wheeled frame on which the chair seat is guided for up and down movement. A camshaft journaled on the underside of the chair seat with cam wheels at each end with cam edges supported on rollers journaled on the frame and lever means on the cam shaft connected to the backrest of the chair seat for rocking the cam shaft upon adjustment of the backrest between its condition of a backrest relative to the chair seat and a condition level with the chair seat as a part of the bed pad when the chair seat is raised to bed level.