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:
Feb. 23, 2010
Filed:
Jan. 11, 2007
William N. Patterson, Montrose, CO (US);
William N. Patterson, Montrose, CO (US);
Other;
Abstract
A drill stem centralizer and/or breakout wrench includes a frame with opposed hydraulic cylinder actuators mounted on the frame and engaged in with jaw support members for movement toward and away from each other for centralizing or breakout of drill stem sections. The hydraulic actuators are mounted on trunnions which are supported by bearing caps which may be indexed to change the spacing of the opposed actuators to accommodate a wide range of drill stem diameters or cross-sectional shapes. The jaw support members are provided with laterally spaced guide parts which are moveable in slots in the frame to guide the jaw support members for linear reciprocal movement in response to actuation by the hydraulic actuators. The frame may be mounted for limited rotation on a feed beam to effect drill stem breakout operations.