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. 02, 1985
Filed:
Jun. 08, 1983
Applicant:
Inventors:
William M Taylor, Houston, TX (US);
Bolie C Williams, III, Houston, TX (US);
Assignee:
Cameron Iron Works, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
251 / ; 277129 ; 277215 ;
Abstract
A ram-type blowout preventer having a housing with a vertical bore, aligned ram guideways extending outward from opposite sides of the bore, a ram in each guideway, means for moving the rams inward and outward in the guideways to open and close on a drill or pipe string in the bore, a packer in each ram having a packing with an upper slotted plate thereon and a lower slotted plate therebelow, the plates being sufficiently flexible to move into close proximity to a string when the rams are closed thereon to support the packing against extrusion.