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:
Apr. 09, 2013
Filed:
Dec. 17, 2010
Applicants:
William Paul Coffman, Houston, TX (US);
Charles Leland Patrick, Cypress, TX (US);
Inventors:
William Paul Coffman, Houston, TX (US);
Charles Leland Patrick, Cypress, TX (US);
Assignee:
Expro Americas, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/12 (2006.01); F16K 31/02 (2006.01); G05D 16/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pressure relief valve control system provides a method and apparatus for rapidly closing a relief valve in response to excess fluid pressure. The system uses a programmable controller to rapidly communicate pressure changes to a solenoid actuated valve and two control valves. The solenoid actuated valve has a dedicated accumulator and the two control valves have another dedicated accumulator.