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:
Jan. 25, 2005
Filed:
Apr. 28, 2003
Applicants:
Michael Wayne Berckenhoff, Spring, TX (US);
Edward Ryan Hemphill, Houston, TX (US);
William Rinehart Holland, Houston, TX (US);
Inventors:
Michael Wayne Berckenhoff, Spring, TX (US);
Edward Ryan Hemphill, Houston, TX (US);
William Rinehart Holland, Houston, TX (US);
Assignee:
Hydril Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3306 ;
U.S. Cl.
CPC ...
Abstract
A bonnet lock mechanism for a blowout preventer including an angled surface disposed in the blowout preventer, a latching dog having a tapered surface disposed in the bonnet, and a lock actuator operatively coupled to the latching dog. The the lock actuator is adapted to move the latching dog such that the latching dog is in locking engagement with the angled surface of the blowout preventer.