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:
Oct. 29, 2013
Filed:
Jul. 28, 2010
Emad Ahmad Obaid Gharaibah, Sandvika, NO;
Astrid Kristoffersen, Sandvika, NO;
Emad Ahmad Obaid Gharaibah, Sandvika, NO;
Astrid Kristoffersen, Sandvika, NO;
Vetco Gray Inc., Houston, TX (US);
Abstract
A valve assembly for use in a wellhead assembly that includes a valve body, a cavity formed in the valve body, and a flow passage through the valve body that intersects the cavity. Also included is a gate slidable in the cavity between an open position and a closed position. A bore is formed through the gate. A fluidic passage is also formed through the gates that provides fluid communication between the bore and an upstream side of the valve member. The fluidic passage is formed so that when the gate is being moved into the closed position, fluid upstream of the gate enters the fluidic passage and exits into the bore to assist closing the valve.