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:
Sep. 18, 2007
Filed:
Nov. 09, 2004
Applicants:
Matthew Brown, Calgary, CA;
William G. Carr, Calgary, CA;
Inventors:
Matthew Brown, Calgary, CA;
William G. Carr, Calgary, CA;
Assignee:
Tesco Corporation, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A top drive assembly for wellsite operations may include a quill, a swivel including a swivel housing and a swivel bearing therein in which the quill is supported, a drive system for applying torque to the quill, and link arm hangers extending from the swivel housing and formed to accept and retain link arms.