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:
Jun. 30, 1987
Filed:
Mar. 24, 1986
Applicant:
Inventor:
Patrick E McDonald, Houston, TX (US);
Assignee:
Hydril Company, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 92 ; 285334 ; 285350 ; 285382 ;
Abstract
A pipe joint of the free-running thread type is provided with engaging shoulders on the pin and box that are positioned for the metal adjacent the shoulders to be stressed by make-up torque beyond its yield joint and extruded laterally of the shoulders into grooves to mechanically lock the joint in its made-up position.