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:
Feb. 13, 1990
Filed:
Jul. 21, 1989
Applicant:
Inventors:
Martin B Jansen, Agoura Hills, CA (US);
John Pettit, Camarillo, CA (US);
Assignee:
Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285140 ; 2772 / ; 277166 ; 277-95 ; 285338 ; 166 86 ;
Abstract
A packoff (10) with an elastomeric seal ring (16) interposed between two metallic seal rings (12) and (14) with retrievable characteristics in the form of a relatively thin apertured curved cylindrical band (50) extending between the two metallic seal rings (12) and (14). The metallic band (50) is such that it does not interfere with the deformability of the elastomeric material when the packoff is set, but provides a mechanical connection between the upper and lower metallic rings (12) and (14) thus providing the packoff with retrievable capabilities.