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:
Oct. 22, 1996
Filed:
Feb. 14, 1995
Applicant:
Inventor:
Arnold Stokka, Sandnes, NO;
Assignee:
Weatherford/Lamb, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
1662416 ;
Abstract
A centraliser has been developed which in one aspect an upper ring and a lower ring connected by six rigid members. The centralizer can be mounted on casing to be lowered down deviated bores. The rigid members are designed to collapse under a lateral load of about 20 tonnes. Thus if, for example, part of the bore collapses and the casing has to be withdrawn the rigid members will collapse enabling the centralizer to be recovered on the casing, preferably in one piece.
Stokka, Arnold. (1996). Centralisers (U.S. Patent No. 5566754). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5566754
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile