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. 16, 2018
Filed:
Dec. 27, 2013
Halliburton Energy Services, Inc., Houston, TX (US);
Peter DW Inglis, Dundee, GB;
Katherine Ann Davies, Carnoustie, GB;
HALLIBURTON ENERGY SERVICES INC., Houston, TX (US);
Abstract
Ball valve assembly () including a truncated sphere () anchored in a two cylindrical retaining members () of the ball valve assembly (), the truncated sphere () having a spherical cap sealing face (). The ball valve assembly () also includes a pair of concentrically oriented, tubular sealing pistons (), each piston () exclusively actuable, one relative to the other, into fluid pressured sealing engagement with the spherical cap sealing face () in dependence upon whether an experienced fluid pressure at the ball valve assembly () is from a top side () or an opposite bottom side () of the ball valve assembly ().