Power tongs

Details Power tongs Power tongs

2006-07-04

2006-07-04

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057150, C081S057200, C081S057330, C081S057340

Reexamination Certificate

active

07069817

ABSTRACT:
Damage to pipe resulting from non-uniform application of gripping forces is minimized by modified power tongs employing pivoting jaws which automatically adjust to the circumference of the pipe. The pivoting jaws pivot about mounting pins which pass through an elongated aperture in the jaw. The aperture is elongated in a direction which allows the arcuate pipe-gripping surface on the jaw to align itself concentric with the outer surface of the pipe so that the gripping force applied by the jaw is uniformly distributed over the arcuate pipe-gripping surface of the jaw.

REFERENCES:
patent: 2650070 (1953-08-01), Lundeen
patent: 4281535 (1981-08-01), Wesch, Jr.
patent: RE31993 (1985-10-01), Wesch, Jr.
patent: 5172613 (1992-12-01), Wesch, Jr.
patent: 5207128 (1993-05-01), Albright
patent: 5542318 (1996-08-01), Wesch, Jr.
patent: 6116118 (2000-09-01), Wesch, Jr.
patent: 6250070 (2001-06-01), Kreiner et al.
patent: 6446524 (2002-09-01), Gravouia
patent: 6761090 (2004-07-01), Dagenais et al.

Affiliated with

Also associated with

Rating

Power tongs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power tongs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power tongs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3552276