Derrick counterweight assembly

Details Derrick counterweight assembly Derrick counterweight assembly

1991-12-20

1992-11-10

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Torso harness

Ladder-associated

A62B 3500, E06C 536

Patent

active

051616394

ABSTRACT:
A telescoping derrick has a safety line which is attached to a harness which secures to a worker to be used while climbing the ladder of the derrick. Telescoping tube sections are mounted to the derrick for extension and contraction with the derrick sections. The line is trained over a pulley attached to the crown of a derrick, then passes into the telescoping tube. The line is connected to a counterweight located in the telescoping tube. The line and counterweight remain inside the telescoping tube during rig up and rig down of the derrick.

REFERENCES:
patent: 1140708 (1915-05-01), Pauly
patent: 1641798 (1927-09-01), Bocchino
patent: 1808492 (1931-06-01), Bocchino
patent: 2538904 (1951-01-01), Herod
patent: 4252214 (1991-02-01), Miller
patent: 4458781 (1984-07-01), Ellis et al.
patent: 4538703 (1985-09-01), Ellis et al.
patent: 4550804 (1985-11-01), Bummer
patent: 4997064 (1991-03-01), Motte

Affiliated with

Also associated with

Rating

Derrick counterweight assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2288070