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. 31, 2018
Filed:
May. 20, 2016
GE Oil & Gas Pressure Control Lp, Houston, TX (US);
Keith Adams, Houston, TX (US);
Travis McEvoy, Houston, TX (US);
Andrew Browne Helvenston, Houston, TX (US);
Lloyd Cheatham, Houston, TX (US);
Robert Kevin Law, Houston, TX (US);
GE Oil & Gas Pressure Control LP, Houston, TX (US);
Abstract
A valve with a packing assembly can include a first stem packing circumscribing a first portion of a valve stem, forming a seal between the valve stem and a valve body assembly, and being located in the second bore portion. A first packing retainer can have a collar that limits axial movement of the first stem packing and a first retainer body defining an inner cavity. A second stem packing can circumscribe a second portion of the valve stem and be located in the inner cavity of the first packing retainer. A second packing retainer can limit axial movement of the second stem packing. A piston member can be located axially between the first stem packing and the second stem packing, the piston member being moveable to apply axial force to one of the first stem packing and the second stem packing.