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:
May. 22, 2012
Filed:
Jun. 17, 2009
John M. Yokley, Kingwood, TX (US);
Larry E. Reimert, Houston, TX (US);
John M. Yokley, Kingwood, TX (US);
Larry E. Reimert, Houston, TX (US);
Dril-Quip, Inc., Houston, TX (US);
Abstract
A downhole toolincludes closure seatsfor seating with a closure, such as a ball. Shear pins or other connectors temporarily limit axial movement of each closure seat which is initially housed within a restricted diameter portion of the central throughbore in the tool body. A piston axially moves in response to fluid pressure to pressurize fluid in a chamber and controllably release fluid through one or more restrictions. The closure seat may be lowered to engage a stop, such that the seat may move axially to an enlarged diameter bore portion of the tool, thereby allowing radial expansion of a closure seat to release the ball.