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:
Mar. 27, 2007
Filed:
Feb. 01, 2005
Tri Canh Le, Spring, TX (US);
Tri Canh Le, Spring, TX (US);
Varco I/P, Inc., Houston, TX (US);
Abstract
A blowout preventer having a main body, a ram system with ram apparatus, a movement system with movable shaft apparatus connected to the ram apparatus, the ram apparatus movable from a first open-ram position to a second closed-ram position, the movable shaft apparatus including a locking shaft portion having a tapered portion, a locking system for selectively locking the ram apparatus in the closed position and having locking member apparatus having a primary tapered surface in contact with the locking shaft portion which is movable with the so that the primary tapered surface contacts the tapered portion of the locking shaft portion to releasably lock the movable shaft apparatus.