Lifting device with counterweight

Details Lifting device with counterweight Lifting device with counterweight

1999-03-18

2000-08-29

Brahan, Thomas J.

Traversing hoists

Having counterweight or counterbalancing means

Counterweight movable relative to load support

B66C 2374

Patent

active

061094633

ABSTRACT:
A lifting device which includes a frame and an elongated boom having a lower end pivotally connected to the frame along a pivot axis. The lower end of the boom has a counterweight connected thereto offset from the pivot axis. The counterweight has a center of gravity which is movable with respect to the pivot axis of the boom. The counterweight can be freely pivotal, fixed, or partially fixed with respect to the boom. When linkage is provided between the counterweight and the boom, the counterweight can be rolled or tilted so as to move the counterweight center of gravity with respect to the pivot axis of the boom.

REFERENCES:
patent: 252672 (1882-01-01), Jewett
patent: 1245186 (1917-11-01), Brothers
patent: 1497686 (1924-06-01), Johnson
patent: 1769750 (1930-07-01), Niemann
patent: 2036386 (1936-04-01), Andersen
patent: 2198793 (1940-04-01), Schroeder
patent: 2364493 (1944-12-01), Ulinski
patent: 3362432 (1968-01-01), Jameson
patent: 3513997 (1970-05-01), Heyer et al.
patent: 4476955 (1984-10-01), Carter

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1239908