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:
Apr. 10, 1990
Filed:
Mar. 30, 1988
Joseph A Sember, III, Glendale, CA (US);
Jasco Products, Inc., Glendale, CA (US);
Abstract
A multiple inflatable/deflatable seat cushion bladder system has bladders arranged to receive pressurized air from one source without having fluid communication between the separate bladders when they are deflated or when an external load increases the pressure in one of the bladders. Input tubes are connected to the bladders and an inflation valve is connected to the input tubes for permitting fluid flow into the bladders while preventing fluid flow out of each of the bladders. An output tube is connected to the each bladder, and a deflation valve is connected to the output tubes for permitting fluid flow out of each bladder while preventing cross flow between the bladders. A switch assembly connected to the inflation valve and to the deflation valve allows the pressure in the bladders to remain constant or to be selectively increased or decreased.