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:
Feb. 05, 2013
Filed:
May. 01, 2008
Toshimichi Wago, Houston, TX (US);
Philippe Gambier, Houston, TX (US);
Jean-louis Pessin, Houston, TX (US);
Rajesh Luharuka, Stafford, TX (US);
Toshimichi Wago, Houston, TX (US);
Philippe Gambier, Houston, TX (US);
Jean-Louis Pessin, Houston, TX (US);
Rajesh Luharuka, Stafford, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A positive displacement pump having a valve with an actuation guide for assisting its actuation. The valve may be configured for controlling fluid communication relative to a chamber of the pump with the valve actuation guide positioned external to the chamber and configured to assist in the controlling. The valve actuation guide itself may include an arm extending into a valve actuation assembly below the valve. In such embodiments, the arm may be reciprocated by crankshaft, hydraulic, or other means. Alternatively, the valve actuation assembly may include electromagnetic means for assisting in actuation of the valve.