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:
Oct. 28, 2003
Filed:
May. 01, 2002
Applicant:
Inventors:
Dan Dagenais, Edmonton, Alberta, CA;
Jonathan Brent Fraser, St. Alberta, Alberta, CA;
Leslie L. Szalacsi, Ononway, Alberta, CA;
Hermann Basler, Stony Plain, Alberta, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 1/350 ; B25B 1/358 ;
U.S. Cl.
CPC ...
B25B 1/350 ; B25B 1/358 ;
Abstract
A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and die seating surface that are shaped to permit radial insertion of the die plate onto its seating surface. Both vertical and horizontally aligned splines, or spline segments are present on the seating surface. Grooves between the protrusions on the mating surface of the die plate interfit between the splines and/or spline segments to stabilize the die plate and to absorb both rotational torque forces and vertical shearing forces without disengagement from its seating surface.