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:
Nov. 03, 1981
Filed:
Feb. 11, 1980
Applicant:
Inventor:
John E Lawson, London, GB;
Assignee:
Armco Inc., Middletown, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166315 ; 166341 ; 166348 ; 166362 ; 285 18 ;
Abstract
Method and apparatus for installing multiple strings of pipe in underwater wells in which, just prior to landing of the hanger for the multiple pipe strings, the weight of the strings is carried by a support ring releasably secured to a body member through an antifriction bearing so that rotational orientation can be accomplished.