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:
Jun. 17, 2014
Filed:
Apr. 21, 2011
Rene Mulder, Etten-Leur, NL;
Anton Krijnen, Klundert, NL;
Niels DE Keijzer, Etten-Leur, NL;
Richard Verhoef, Akkrum, NL;
Rene Mulder, Etten-Leur, NL;
Anton Krijnen, Klundert, NL;
Niels De Keijzer, Etten-Leur, NL;
Richard Verhoef, Akkrum, NL;
National Oilwell Varco, L.P., Houston, TX (US);
Abstract
A clamping device for supporting a well string in a borehole includes a base plate with a central opening and primary clamp body clamp body supported for linear motion relative to the base plate. The clamping device further includes other clamp bodies supported for independent linear motion relative to the base plate. In certain embodiments, the clamping bodies are supported for pivoting motion to open and close the central opening. Each of the clamp bodies carries a gripping member on a face thereof for engaging a well string component received in the central opening. A drive mechanism is coupled to the clamp bodies and configured to move the clamp bodies relative to the base plate.