Shock mounted top drive

Details Shock mounted top drive Shock mounted top drive

2007-11-28

2009-02-24

Bagnell, David J (Department: 3672)

Boring or penetrating the earth

With means to simultaneously feed and rotate tool from a...

C175S170000, C175S162000

Reexamination Certificate

active

07493970

ABSTRACT:
A shock mounted top drive comprising a traveling frame for moving along a drilling tower, the traveling frame comprising a first and second housing section, at least one set of sheaves mounted to the upper section of each housing section, a guide wheel assembly secured to the outboard side of each housing section, at least one swivel support disposed on the inboard side of each housing section, at least one shock absorber disposed on each swivel support, and at least one upper stop connected to the inboard side of each housing section. A top drive power swivel, which has a housing and a rotating drive shaft, is secured to the traveling frame using a plurality of removable top drive retainers. The top drive retainers engage the inboard side of each housing section between the upper stops and the shock absorbers.

REFERENCES:
patent: 3994350 (1976-11-01), Smith et al.
patent: 4300276 (1981-11-01), Davis
patent: 4589503 (1986-05-01), Johnson et al.
patent: 7178788 (2007-02-01), Flud et al.
patent: 2006/0231267 (2006-10-01), Wood

Affiliated with

Also associated with

Rating

Shock mounted top drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4129297