Other

Leroy E Bartholomew

Eric G Childs

David M Callahan

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.

Growing community of inventors

Houston, TX, United States of America

Leroy E Bartholomew