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:
Sep. 20, 1994
Filed:
Aug. 18, 1993
David E Harris, Bridgeport, MI (US);
Brian J Christopher, Clio, MI (US);
Cary W Rackett, Goodrich, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An open-vane regenerative turbine pump includes a housing, an impeller rotatably supported on the housing having a plurality of paddle-like open-vane type vanes thereon, an annular pump channel in the housing around the periphery of the impeller and around the vanes, a stripper in the pump channel between an inlet port of the latter and a discharge port thereof, and a pair of bosses on the housing in the pump channel on opposite sides of the impeller about midway between the inlet and discharge ports. The bosses each have an edge obstructing a radially inner fraction of the pump channel to intercept inertially separated vapor in the inner fraction having a velocity component in the direction of rotation of the impeller. A pair of notches are formed in the housing adjacent respective ones of the bosses in flow communication with a vapor collection chamber and with a radially innermost extremity of the pump channel. The momentum of the intercepted vapor induces flow thereof through the notches to the vapor collection chamber for maximum scavenging of vapor from the pump channel.