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:
Feb. 03, 2009
Filed:
Aug. 11, 2004
Thomas E. Kasmer, Johnson City, NY (US);
Thomas E. Kasmer, Johnson City, NY (US);
Other;
Abstract
A rotary vane pump is provided that provides an improved fluid replenishment and pressure relief system within a rotary vane pump system. A system, containing a rotary vane pump containing at least one relief cut between the housing and the rotor, functions to relieve fluid pressure normally found between the housing and the rotor. The fluid leaks from areas such as the rotational clearance required between the rotor and an inner wall of the housing. The system includes a reservoir in fluid communication with the relief cut wherein fluid leaks are then retained within the reservoir. A fluid distribution manifold employing a plurality of check valves, each corresponding to a respective chamber within the rotor, provides a controlled fluid feed from the reservoir to the rotor thereby balancing the fluidic pressure existing between the radially innermost ends of the vanes and the radially outermost ends of the vanes.