The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Apr. 28, 1987
Vernon L Goodwin, Charlotte, NC (US);
SSI Medical Services, Inc., Charleston, SC (US);
Abstract
An improved patient support structure comprises an articulatable frame, a plurality of elongated inflatable sacks, a low pressure compressed air blower and a plurality of pipes for carrying gas from the blower to the sacks. A multi-outlet, variable flow, gas valve comprises a housing defining an inlet and a passageway. The valve housing further defines at least two cylinder chamber communicating with the passageway and a discrete outlet for each cylinder chamber communicating therewith. A piston is substantially non-rotatably disposed inside each cylinder chamber and has a threaded opening through the center thereof with receives a threaded portion of a rotatable shaft therethrough. One end of the shaft is rotated by a motor, and the other end of the shaft is connected to an axle of a potentiometer.