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:
Nov. 21, 2000
Filed:
Aug. 02, 1999
Sunil Palakodati, Westland, MI (US);
Ronald Theis, Redford Township, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
A hydraulic vane pump (10), including a top section (12), a middle section (14), a vane rotor assembly (16) and a bottom section (18) secured together to form a single assembly. The vane pump (10) has a fluid feed chamber (20) to supply fluid directly to the top of a bore (32) formed in the middle section (14). Fluid from the feed chamber (20) also passes through a bypass chamber (28) into a fluid pocket (24) in the bottom section (18) and into the bottom of the bore (32). A vane rotor assembly (16) is used to force fluid from the bore (32) out the outlet chamber (26). By supplying fluid to both the top and bottom of the bore (32) cavitation is reduced. By feeding fluid from a single side of the hydraulic vane pump (10), packaging requirements are minimized.