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. 21, 1980
Filed:
Apr. 28, 1978
Bolie C Williams, III, Houston, TX (US);
Cameron Iron Works, Inc., Houston, TX (US);
Abstract
A packer assembly for a blowout preventer having movable rams consisting of two packers, in which the packer assembly is of deformable material for sealing around a well member extending through the preventer and has a variable bore so that it will effectively seal around members, such as pipe, within a range of sizes or diameters. More particularly, each packer includes a main body of deformable material having an arcuate or curved recess with the wall defining said recess forming a sealing surface, and deformable side sealing elements or portions at each side of said recess, said side sealing elements being of a size, configuration and volume which are so related to the deformable material of the main body that when the packer assembly is moved inwardly toward and around a well member or pipe extending through the preventer, a substantially uniform radial displacement of the main body and of the side sealing elements is effected to assure uniform circumferential sealing about said object or pipe.