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:
Jul. 17, 2007
Filed:
Nov. 29, 2004
C. Steven Isaacks, Cypress, TX (US);
Harry P. Hiebeler, Houston, TX (US);
Noe Tony Cordova, Houston, TX (US);
Jimmy Livingston, Houston, TX (US);
Russell C. Gilleylen, Houston, TX (US);
C. Steven Isaacks, Cypress, TX (US);
Harry P. Hiebeler, Houston, TX (US);
Noe Tony Cordova, Houston, TX (US);
Jimmy Livingston, Houston, TX (US);
Russell C. Gilleylen, Houston, TX (US);
National-Oilwell DHT, L.P., Houston, TX (US);
Abstract
An improved shear/seal ram assembly used in ram-type BOPs is disclosed. The disclosed invention is a unique shear/seal ram assembly in which rail seal actuators attached to or integrally formed in a planar surface of one shear blade mate with and slide within corresponding rail guide grooves formed in a planar surface of a second shear blade. As the shear blades move over each other, the rail seal actuators slide within the rail guide grooves, eventually coming into contact with a seal actuator plate of a unique blade-to-blade seal assembly placed within a shear blade seal groove. Continued movement of the shear blades over each other causes the rail seal actuators to compress, or 'energize,' the blade-to-blade seal of the blade-to-blade seal assembly, thereby providing a pressure tight seal between the shear blade assemblies.