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:
Apr. 18, 2006
Filed:
Dec. 30, 2003
John Timothy Allen, Katy, TX (US);
Steven Anthony Box, Katy, TX (US);
Bernd Pietras, Wedemark, DE;
Jeffrey Michael Habetz, Houston, TX (US);
John Timothy Allen, Katy, TX (US);
Steven Anthony Box, Katy, TX (US);
Bernd Pietras, Wedemark, DE;
Jeffrey Michael Habetz, Houston, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel is secured to the housing for rotating the housing and the jaw assemblies. The gear wheel includes a toothed outer circumference for mating with teeth of a drive shaft of a driving motor. A gear flange is movably mounted on the gear wheel such that rotation of the gear wheel does not rotate the gear flange.