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:
Jun. 04, 2024
Filed:
Jul. 20, 2021
Pratt & Whitney Canada Corp., Longueuil, CA;
Hugues Pellerin, Montréal, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
A referenced pressure valve for a fluid system having a housing including: an inner wall enclosing a cavity providing fluid communication between the inlet and the outlet; a rim in the cavity defining a bypass passage circumscribed outwardly by the inner wall and inwardly by the rim, an upstream passage located between an upstream end of the cavity and the rim, and a downstream passage located between the rim and a downstream end of the cavity. A rib extends outwardly from the rim to the inner wall through the bypass passage, and a piston assembly, received within a chamber circumscribed outwardly by the rim, includes a piston movable relative to the rim between a position in which the piston obstructs the flow path at the upstream passage and a position in which the piston is at least partially clear of the path to permit flow along the path.