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:
Jan. 08, 2019
Filed:
Dec. 16, 2013
Forum Energy Technologies (Uk) Limited, Aberdeen, GB;
John Thompson, Newcastle-upon-Tyne, GB;
Paul Chubbock, Newcastle-upon-Tyne, GB;
FORUM ENERGY TECHNOLOGIES (UK) LIMITED, Aberdeen, GB;
Abstract
A check valve assembly () is provided for subsea applications. The check valve assembly comprises a housing (), having an inlet port () and an outlet port () forming an internal fluid passageway through the housing; a valve member (), moveable within the internal fluid passageway between a first position, where fluid flow through the internal fluid passageway is prevented, and a second position, where fluid flow through the internal fluid passageway is permitted; a biasing member (), adapted to urge the valve member into the first position at a predetermined cracking force, and a pressure interface (). The pressure interface operatively links the valve member and an external fluid of a region exterior of the check valve assembly so as to provide a supplemental force, proportional to the ambient pressure of the external fluid, adapted to urge the valve member towards the first position.