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:
Oct. 18, 2011
Filed:
Jan. 06, 2010
William Carr, Calgary, CA;
Matthew Brown, Calgary, CA;
Per G. Angman, Calgary, CA;
Tesco Corporation, Houston, TX (US);
Abstract
A pipe handling assembly includes a pipe engaging apparatus having a pipe gripping mechanism connectable to a top drive such that the top drive transmits rotational movement and axial movement to the pipe gripping mechanism. A pipe handling device is mounted onto the pipe engaging apparatus, the pipe handling device including a link hanger mounted on the pipe engaging apparatus. A link arm has a first end pivotally connectable to the link hanger and an outboard end selected to carry a pipe into a position to be gripped by the pipe engaging apparatus. A bearing isolates rotational movement to the pipe gripping mechanism from the link hanger. A connection rigidly connects the link hanger to the pipe engaging apparatus during operation of the pipe handling assembly. The connection is selected to substantially prevent the link hanger from rotating with the pipe gripping mechanism should the bearing seize.