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:
Jan. 20, 1976
Filed:
Dec. 13, 1973
Applicant:
Inventor:
Edward T Cugini, Brea, CA (US);
Assignee:
Grant Oil Tool Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ; F16L / ;
U.S. Cl.
CPC ...
285 23 ; 285145 ;
Abstract
A packer and tension slip assembly is disposed in the annular area between two coaxial drilling casings having different diameters. The coaxial casings are secured one to the other by placing the inner casing in tension with the outer casing. A packoff unit is attached to and completes the assembly forming an pressure tight seal in the defined annulus. The packer and tension slip assembly also serves to center one string in respect to the other and can be retrieved when no longer required, and subsequently reused.