Drill rig hoist

Details Drill rig hoist Drill rig hoist

1978-06-23

1980-03-11

Peters, Jr., Joseph F.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

192 85AA, B66D 104

Patent

active

041924851

ABSTRACT:
A drill rig hoist has a central shaft upon which a drum is mounted for free rotation. The shaft projects beyond the drum, and has at one end a caliper mounting plate secured to the shaft for rotation with the shaft. Clutch calipers mounted on the caliper mounting plate embrace a clutch rotor fixed to the drum. The drum also has a brake rotor mounted on it. Brake calipers, fixed to a base frame, embrace the brake rotor. The calipers are hydraulically operated, and an accumulator is provided in hydraulic lines to each of the brake and the clutch calipers.

REFERENCES:
patent: 2497603 (1950-02-01), Helstrom
patent: 3529871 (1970-09-01), Burckhardt et al.
patent: 3966024 (1976-06-01), Baer

Affiliated with

Also associated with

Rating

Drill rig hoist 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 rig hoist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill rig hoist will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1998012