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. 01, 1994
Filed:
Dec. 13, 1991
Applicant:
Inventors:
James A Gariepy, Cypress, TX (US);
Rodolfo Z Lugo, Houston, TX (US);
B Lee Danner, Houston, TX (US);
Assignee:
ABB VectoGray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02D / ;
U.S. Cl.
CPC ...
405169 ; 4052231 ; 405224 ; 166349 ; 166351 ;
Abstract
A subsea well assembly has an antirotation device to prevent rotation of an inner wellhead housing within an outer wellhead housing. A number of slots are formed in the upper rim of the outer wellhead housing. The slots have open upper ends. A number of pins are mounted to the exterior of the inner wellhead housing. Guide surfaces extend upward from the slots to guide the pins as the inner wellhead housing is lowered into the outer wellhead housing. The pins locate in the slots to prevent rotation.