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:
Jul. 11, 2000
Filed:
Sep. 22, 1998
Donald E Barker, Sandy Hook, CT (US);
Other;
Abstract
A vane pump assembly which uses a biasing means for regulating the internal and maximal output pressure of the vane pump rather than the maximal output of the pump motor. The pump assembly includes a motor having an output drive shaft, a housing having a front end and a rear end seated on the motor, a cylindrical member received Within the housing, first and second closure members which overlie the respective front and rear ends of the cylindrical member, a cylindrical hub eccentrically received on the drive shaft within the cylindrical member, a plurality of vanes disposed about the cylindrical hub, a cap member covering the front end of the pump housing, and a resilient means disposed between the motor and the second closure member for selectively biasing the cylindrical member between the first and second closure members and enabling the pump to develop a preselected maximum output therefrom without halting rotation of the cylindrical hub. The biasing means is interchangeable to provide variable maximal degrees of output pressure. The pump assembly is integrable into a seat support system.