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:
Aug. 29, 2006
Filed:
Jan. 20, 2005
Daniel Juhasz, Westminster, CA (US);
George Boyadjieff, Villa Park, CA (US);
Brian L. Eidem, Cerritos, CA (US);
Hans Van Rijzingen, Oosterhout, NL;
Herman Kamphorst, Assen, NL;
Dieter Boettger, Den Helder, NL;
Guus Van Wechem, Reeuwijk, NL;
Daniel Juhasz, Westminster, CA (US);
George Boyadjieff, Villa Park, CA (US);
Brian L. Eidem, Cerritos, CA (US);
Hans van Rijzingen, Oosterhout, NL;
Herman Kamphorst, Assen, NL;
Dieter Boettger, Den Helder, NL;
Guus van Wechem, Reeuwijk, NL;
Varco I/P, Inc., Orange, CA (US);
Abstract
A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment.