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:
Dec. 22, 2015
Filed:
Nov. 05, 2012
Applicant:
Gabriel A. Slup, Spring, TX (US);
Inventor:
Gabriel A. Slup, Spring, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/08 (2006.01); E21B 21/10 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/08 (2013.01); E21B 21/10 (2013.01); E21B 2034/005 (2013.01);
Abstract
A flapper valve includes a housing, a seat movably disposed at the housing at least between a first position and a second position, a flapper movably disposed at the seat at least between a seated position and an unseated position and at least two biasing members. A first biasing member is configured to bias the flapper toward the unseated position and the second biasing member is configured to bias the flapper toward the seated position.