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:
Mar. 10, 2009
Filed:
Apr. 08, 2005
Applicants:
Robert J. Coon, Missouri City, TX (US);
Khai Tran, Pearland, TX (US);
Inventors:
Robert J. Coon, Missouri City, TX (US);
Khai Tran, Pearland, TX (US);
Assignee:
Weatherford/Lamb, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of the invention are directed to a valve. In one embodiment, the valve includes a body having a first biasing member and a sealing member configured to axially move inside the body against the first biasing member to provide a path for fluid to flow from an interior region of the body to an exterior region of the body at a first predetermined pressure difference across the sealing member.