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:
Dec. 03, 1996
Filed:
Dec. 13, 1995
Orrin A Woodward, Grand Blanc, MI (US);
Edward A Hantle, deceased, late of Caro, MI (US);
David E Harris, Frankenmuth, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A motor vehicle fuel pump including an electric motor, a high pressure pump, and a low pressure pump having a side channel pumping stage for pumping fuel from a fuel tank to a reservoir and a regenerative turbine pumping stage for pumping fuel from the reservoir to the high pressure pump. A pair of radial vapor ports are disposed between an inside diameter of a pump channel of the turbine pumping stage and an outside diameter of a concentric, radially inboard pump channel of the side channel pumping stage at a discharge port of the pump channel of the side channel pumping stage. Liquid fuel with entrained vapor near the inside diameter of the pump channel of the turbine pumping stage is aspirated through the radial vapor ports into the discharge port of the pump channel of the side channel pumping stage by liquid fuel flowing in the pump channel of the side channel pumping stage.