Drill pipe clamp

Details Drill pipe clamp Drill pipe clamp

1980-01-28

1982-04-13

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

B25B 1700

Patent

active

043241573

ABSTRACT:
A clamp for drill pipes includes an hydraulic motor adapted to drive a gear head which is keyed to a sprocket engaged to a sheave chain. The sprocket and the associated equipment are mounted between two plates which are also provided with an hydraulically operated slide for advancing two rollers. It is these rollers that, by their advancement, enlarge or shorten the effective sheave chain loop, the sheave chain passing over idlers towards the end of two hinged arms or jaws which are conformed to receive the drill pipe. Formed at the end of each jaw are bearing seats each adapted to receive a bearing cap which engages ball bearings in corresponding bearing races supporting the center shaft of two turning sprockets around which the chain is looped. Each of the bearing races includes an enlarged periphery and it is between this periphery and the chain loop that the pipe is engaged. In this manner pipes of various sizes may be clamped on the interior of the jaws and the rotation of the hydraulic motor can then drive the pipe.

REFERENCES:
patent: 449957 (1891-04-01), Simonds
patent: 611236 (1898-09-01), Crane
patent: 3906820 (1975-09-01), Hauk
patent: 4212212 (1980-07-01), Chandler et al.

Affiliated with

Also associated with

Rating

Drill pipe clamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1412476