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. 10, 2024
Filed:
Oct. 20, 2023
Applicant:
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Inventors:
Sachin Ramprashad, West Hartford, CT (US);
August M. Coretto, Windsor, CT (US);
Frank Perrelli, East Haven, CT (US);
Ryan Prescott Susca, Windsor, CT (US);
Assignee:
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/044 (2006.01); F15B 13/04 (2006.01); F15B 20/00 (2006.01);
U.S. Cl.
CPC ...
F15B 13/044 (2013.01); F15B 13/0402 (2013.01); F15B 20/008 (2013.01); F15B 2013/0412 (2013.01);
Abstract
A method includes using two parallel electrohydraulic servo valves EHSVs with a single transfer valve to move an actuator during a normal operation mode. The method includes upon failure of one of the EHSVs, using the single transfer valve to disconnect a non-operational one of the EHSVs and continuing to move the actuator with a functional one of the EHSVs in a backup mode.