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:
Apr. 19, 1983
Filed:
Oct. 31, 1980
Applicant:
Inventor:
Donald E Sable, Dallas, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 45 ; 285333 ; 308 / ;
Abstract
A well tool, such as a drilling pipe string, whose joints are provided with tubular protectors which are restrained against vertical movement on the joints while permitting rotation of the drilling pipe string relative thereto when the protectors engage the internal surfaces of a well bore or of a well casing through which the drilling pipe string extends.