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. 01, 1982
Filed:
Feb. 11, 1980
Applicant:
Inventors:
Felix Kuus, Huntington Beach, CA (US);
Gerald C Eckmann, La Puente, CA (US);
Assignee:
BJ-Hughes Inc., Long Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166319 ; 251325 ;
Abstract
A valve assembly for use in an inflatable packer system comprising an outer valve member, an inner valve member adapted to move axially relative to said outer valve member when weight is set down on and lifted from the system, and a shifting sleeve which is pumped down by inflation fluid with respect to both said inner and outer valve members to establish an inflation fluid passageway.