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:
Oct. 05, 1976
Filed:
Jul. 29, 1974
Applicant:
Inventors:
Stanley O Hutchison, Bakersfield, CA (US);
Glen W Anderson, Oildale, CA (US);
Gordon L Newby, Bakersfield, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138177 ; 138118 ; 1381181 ; 428908 ;
Abstract
An impression sleeve for use in an impression packer comprising a smooth rolled sheet adapted to be connected on the outside of a packer to form an impression cover therefor, said sheet composed of about 60% to 80% by weight synthetic nitrile rubber, about 10% to 20% by weight natural rubber smoked sheet, about 5% to 15% by weight hydrated amorphous silica, and about 2% to 6% by weight of rubber processing oil.