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:
Feb. 28, 1989
Filed:
Sep. 18, 1987
Applicant:
Inventor:
Robert L Wilkins, Houston, TX (US);
Assignee:
Cameron Iron Works USA, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166 86 ; 166334 ; 166332 ; 251250 ; 251341 ;
Abstract
An improved tubing hanger having an annulus passageway therethrough and with an improved annulus control valve therein including an annular hanger body having an annulus passageway extending therethrough with a chamber interrupting said passageway and a valve ball positioned within said chamber for rotation responsive to rotation of gear means associated with said valve ball, a sleeve slidably positioned within said hanger body and having a rack secured thereto and engaging said gear means so that movement of said sleeve controls the position of said valve ball to open and close flow through said annulus passageway.