Dumbell roller assembly for tong unit

Details Dumbell roller assembly for tong unit Dumbell roller assembly for tong unit

2011-02-08

2011-02-08

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057330

Reexamination Certificate

active

07882767

ABSTRACT:
A power tong having a ring gear and dumbell rollers, with mating load surfaces on the ring gear and dumbell rollers which transfer horizontal and vertical loads from the ring gear to the dumbell rollers, without contact between the ring gear teeth and the dumbell rollers. The power tong further has a dumbell roller shaft configuration which permits vertical and rotational locking of the shaft, while permitting easy replacement and without binding of the rotation of the top and bottom plates on the dumbell rollers.

REFERENCES:
patent: 5144868 (1992-09-01), Feigel, Jr.
patent: 6386284 (2002-05-01), Buck et al.
patent: 6446524 (2002-09-01), Gravouia

Affiliated with

Also associated with

Rating

Dumbell roller assembly for tong unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dumbell roller assembly for tong unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dumbell roller assembly for tong unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2638082