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:
Jan. 04, 2011
Filed:
Jun. 08, 2007
Eivind Gimming Stensland, Kristiansand, NO;
Eivind Gimming Stensland, Kristiansand, NO;
Aker Kvaerner MH AS, Kristiansand, NO;
Abstract
A power tong construction in particular designed to annul compulsory forces that may arise within the tong construction during makeup/breakout operations of pipe joints in a string of pipes, is shown. The power tong construction is one unit having a main frame carrying a torque tong and a backup tong. The main frame is located on a drill floor on board a vessel or fixed installation, and is moveably arranged in guide rails. The torque tong is loosely suspended and 'floatingly' arranged in the power tong construction, said power tong thereby having a limited freedom of motion in all directions in the horizontal plane and vertical plane, and has means to counteract external rotation and annulment of compulsory forces, when the power tong makes up/breaks out pipe joints, arranged between the power tong and the main frame.