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. 14, 1992
Filed:
Oct. 12, 1990
Applicant:
Inventor:
Donald R Greenlee, Cedar Hill, TX (US);
Assignee:
Dresser Industries, Inc, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166120 ;
Abstract
A hydraulic well packer having upper and lower slip assemblies with pivotable teeth therein for engaging the well casing to lock the packer in the casing and having elastomer seals between the upper and lower slip assemblies. A hydraulic assembly is coupled to the lower slip assembly for forcing it upwardly towards the upper slip assembly thereby compressing the elastomer seals outwardly against the well casing to form a liquid-tight seal and forcing the slip teeth outwardly to lock the well packer in place in the well casing.