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.

Date of Patent:
Mar. 06, 2012

Filed:

Nov. 21, 2007
Applicants:

William Scott Rowan, South Bend, IN (US);

Larry Portolese, Granger, IN (US);

Brad Mcroberts, Mishawaka, IN (US);

George Wieger, Niles, MI (US);

Inventors:

William Scott Rowan, South Bend, IN (US);

Larry Portolese, Granger, IN (US);

Brad McRoberts, Mishawaka, IN (US);

George Wieger, Niles, MI (US);

Assignee:

Honeywell International Inc., Morristown, NJ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 1/26 (2006.01); F04B 49/00 (2006.01); F01B 9/02 (2006.01); F02C 9/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

A system and method is provided for controlling a variable displacement piston pump that supplies fluid to one or more loads. If fluid is being supplied through a metering valve to a load, then the variable displacement piston pump is controlled to operate in accordance with a variable flow/variable discharge pressure scheme. However, if fluid is not being supplied through the metering valve to the load, then the variable displacement piston pump is controlled to operate in accordance with a variable flow/constant discharge pressure scheme.


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