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:
Sep. 20, 2016

Filed:

Jul. 01, 2013
Applicant:

Hamilton Sundstrand Corporation, Windsor Locks, CT (US);

Inventors:

Floyd K. Matlack, North Granby, CT (US);

Paul A. Carvalho, Hadley, MA (US);

Assignee:

Hamilton Sundstrand Corporation, Windsor Locks, CT (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 11/38 (2006.01); G05D 16/10 (2006.01); F15B 11/17 (2006.01);
U.S. Cl.
CPC ...
G05D 16/10 (2013.01); F15B 11/17 (2013.01); B64C 11/38 (2013.01); F15B 2211/20592 (2013.01); F15B 2211/50536 (2013.01); F15B 2211/66 (2013.01); Y10T 137/0379 (2015.04); Y10T 137/7904 (2015.04); Y10T 137/86019 (2015.04);
Abstract

A fluid pressure regulating system includes an auxiliary fluid circuit having a high pressure region and a low pressure region, a pump connected to the auxiliary fluid circuit and configured to discharge fluid into the high pressure region of the auxiliary fluid circuit, and a check valve connecting the high pressure region of the auxiliary fluid circuit to a main fluid interface line. The fluid pressure regulating system also includes a pressure regulating valve connecting the high pressure region of the auxiliary fluid circuit and the low pressure region of the auxiliary fluid circuit. The pressure regulating valve includes an aperture defining a fluid path from the high pressure region of the auxiliary fluid circuit to the low pressure region of the auxiliary fluid circuit. The aperture has a variable area as a function of fluid pressure within the main fluid interface line.


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