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:
Aug. 02, 1994
Filed:
Oct. 04, 1993
Applicant:
Inventors:
Leroy E Bartholomew, Houston, TX (US);
Eric G Childs, Katy, TX (US);
David M Callahan, Katy, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
251-13 ; 251-11 ;
Abstract
An improved ram-type blowout preventer having an improved resilient ram packer which includes an upper retainer plate and a lower retainer plate which each have a front face with a central recess therein, a back and sides, resilient end elements bonded between the plates at the sides and having facing surfaces extending from front to back and a resilient insert shaped to be positioned between said plates and between said end elements with sides mating with the shape of the facing surfaces of the end elements.