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:
May. 05, 2009
Filed:
Oct. 31, 2007
Applicants:
William E. Brennan, Iii, Richmond, TX (US);
Edward Harrigan, Richmond, TX (US);
Christopher S. Del Campo, Houston, TX (US);
Inventors:
William E. Brennan, III, Richmond, TX (US);
Edward Harrigan, Richmond, TX (US);
Christopher S. Del Campo, Houston, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 17/26 (2006.01); E03B 15/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for controlling fluid flow through a passageway includes slidably disposing a piston having a conduit that reduces the flow area through the passageway in the passageway and selectively closing the conduit of the piston by moving at least one of the piston and a plug.