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. 30, 2025

Filed:

May. 26, 2023
Applicant:

Hamilton Sundstrand Corporation, Charlotte, NC (US);

Inventors:

Ryan Shook, Loves Park, IL (US);

Ryan Prescott Susca, Windsor, CT (US);

Assignee:

Hamilton Sundstrand Corporation, Charlotte, NC (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/16 (2006.01); F04B 49/22 (2006.01);
U.S. Cl.
CPC ...
F04B 49/16 (2013.01); F04B 49/22 (2013.01);
Abstract

A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. The VDP includes a variable stop configured to vary minimum displacement of the variable displacement mechanism based on position of the variable stop relative to a housing of the VDP. A pressure sensing valve (PSV) is operatively connected between the inlet line and the outlet line to actuate a stop member to adjust stopping position of the variable stop based on pressure differential between the inlet line and the outlet line.


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