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:
Aug. 14, 2007
Filed:
Apr. 30, 2003
Applicants:
Dan Dagenais, Edmonton, CA;
Jonanthan Brent Fraser, Ononway, CA;
Leslie L. Szalacsi, St. Albert, CA;
Hermann Basler, Stony Plain, CA;
Inventors:
Dan Dagenais, Edmonton, CA;
Jonanthan Brent Fraser, Ononway, CA;
Leslie L. Szalacsi, St. Albert, CA;
Hermann Basler, Stony Plain, CA;
Assignee:
McCoy Bros. Inc., Edmonton, Alberta, unknown;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 13/50 (2006.01); B25B 28/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power tong () or back-up tong has a sliding jaw assembly () that may be advanced into the throat () of the tong for engagement with a pipe. A camming surface () on the inside circumference of the ring gear () advances the sliding jaw assembly into full engagement with the well pipe when the ring gear () is rotated with respect to the jaw assembly.