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:
Oct. 18, 2022
Filed:
Jan. 15, 2020
Applicant:
Prevco Subsea Llc, Fountain Hills, AZ (US);
Inventors:
Don Christensen, Phoenix, AZ (US);
John Head, Fountain Hills, AZ (US);
Assignee:
PREVCO SUBSEA LLC, Fountain Hills, AZ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 17/04 (2006.01); F16K 17/06 (2006.01); F16K 17/10 (2006.01); F16K 15/06 (2006.01);
U.S. Cl.
CPC ...
F16K 17/044 (2013.01); F16K 15/066 (2013.01); F16K 17/06 (2013.01); F16K 17/10 (2013.01); Y10T 137/7743 (2015.04); Y10T 137/7838 (2015.04); Y10T 137/7846 (2015.04);
Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.