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:
Jul. 22, 2008
Filed:
Apr. 28, 2006
Applicants:
Lawrence E. Wells, Yorba Linda, CA (US);
Preston Fox, Fountain Valley, CA (US);
Cliff Swiontek, Brea, CA (US);
Svein Stubstad, Houston, TX (US);
Inventors:
Lawrence E. Wells, Yorba Linda, CA (US);
Preston Fox, Fountain Valley, CA (US);
Cliff Swiontek, Brea, CA (US);
Svein Stubstad, Houston, TX (US);
Assignee:
Varco I/P, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, and a gear system interconnected with the quill and the motor apparatus.