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. 15, 1988
Filed:
Aug. 22, 1986
Igor Krasnov, Fountain Valley, CA (US);
Vetco Gray Inc., Houston, TX (US);
Abstract
A gate valve (10) having a valve operator (40) fully contained within a valve body with means for communicating fluid under pressure to the valve operator (40) to move a gate (32) to a valve open or a valve closed position. The valve operator (40) is located within the gate chamber (30) and the gate (32) itself contains and forms part of the valve operator (40) and, thus, considerable space is conserved. In one embodiment, the means for communicating pressure fluid to the valve operator includes a manifold (16) to allow the valve body (12) to rotate as part of a drilling assembly yet be remotely controllable. In another embodiment, the manifold may be eliminated for the use of the valve does not require rotation. This invention introduces gate valve technology into drilling operations to displace ball valves as kelly cock valves.