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. 21, 2020
Filed:
May. 11, 2016
Applicant:
Drillform Technical Services Ltd., Calgary, CA;
Inventors:
Todd McCorriston, Calgary, CA;
Patrick McDougall, Calgary, CA;
Vladimir Scekic, New Westminster, CA;
Assignee:
DRILLFORM TECHNICAL SERVICES LTD., Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/16 (2006.01);
U.S. Cl.
CPC ...
E21B 19/161 (2013.01);
Abstract
Modified tong assemblies for drilling rig floor wrenches are provided, each tong assembly providing die blocks having 'quick-release' gripping die for gripping and manipulating wellbore tubulars. According to embodiments herein, each tong assembly includes die blocks forming at least two opposed slots for receiving the die within the slots, and having at least one spring-actuated retainer pin for releasably securing the die within the slots.