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:
Jul. 05, 2011
Filed:
Oct. 31, 2008
Applicant:
Baha Tulu Tanju, Humble, TX (US);
Inventor:
Baha Tulu Tanju, Humble, TX (US);
Assignee:
Chevron U.S.A. Inc., San Ramon, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/12 (2006.01); F16K 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for use in actuating a valve to control the flow of fluids through a flow tube comprises a stationary ring surrounding the flow tube, the ring having an inner diameter greater than an outer diameter of the flow tube. An interior of the ring and an exterior of the flow tube have complementary screw threads. At least three actuators are equally circumferentially spaced along an exterior of the ring. When activated an actuator induces a screw thread on the interior of the ring to engage a screw thread on the exterior of the flow tube such that the flow tube is moved in an axial direction relative to the ring.