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:
May. 24, 1988
Filed:
Feb. 19, 1987
Willie Wystemp, Oklahoma City, OK (US);
Michael F Hughes, Oklahoma City, OK (US);
Corken International Corporation, Oklahoma City, OK (US);
Abstract
A sliding vane pump having a hydraulic vane actuation system. The pump includes a case with a liner having an eccentric surface therein. A rotor and shaft rotate within the liner. The rotor has a plurality of radial slots therein, with a vane slidably disposed in each of the slots. Each vane has a radially inner edge with first and second sides extending substantially normally therefrom. A radially outer edge extends normally from the first side and is opposite and substantially parallel to the radially inner edge. A beveled edge extends radially inwardly from the outer edge and interconnects the outer edge with the second side. As the rotor rotates, the beveled edge is the leading edge of the vane. A plurality of radially oriented holes are defined through each vane. The holes intersect the inner edge and a portion of the beveled edge and a portion of the outer edge. Fluid travels radially inwardly and outwardly through the holes in the vanes as the rotor rotates, providing hydraulic actuation of the vanes outwardly, as well as providing fluid relief therefor.