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. 08, 2001
Filed:
Apr. 20, 2000
Applicant:
Inventors:
Brian William Smith, Wooster, OH (US);
Eric D. Ramseyer, Orrville, OH (US);
Mark Douglas Smith, Bellville, OH (US);
Assignee:
Mannesmann Rexroth Corporation, Wooster, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 3/704 ; F04B 1/12 ;
U.S. Cl.
CPC ...
F02M 3/704 ; F04B 1/12 ;
Abstract
A HEUI system uses a fixed displacement, axial displacement pump to provide a generally constant pump flow of high pressure hydraulic fluid over the operating speed range of the pump to minimize parasitic power drains on the engine. The axial piston pump includes a orificing suction slot to vary the pump displacement over the operating speed of the pump. A throttling valve at the pump inlet may be provided to starve inlet fluid feed if reduced flow to the injectors is additionally required.