Balanced lifting crane

Details Balanced lifting crane Balanced lifting crane

1991-10-25

1993-04-20

Peters, Jr., Joseph F.

Traversing hoists

Having counterweight or counterbalancing means

212196, 212197, 212198, 212175, 212230, 212248, 414917, B66C 2372, B66C 2376, B66C 2304

Patent

active

052038378

ABSTRACT:
A crane has a generally horizontally disposed main boom arm centrally pivotally mounted on a turret supported for rotation atop a central column. The main boom arm supports a load at one end and a counterweight at its other end. The main boom arm load support end has a depending vertical arm, linked in parallelogram fashion with the turret, and with a lower rotatable load carrying swing arm movable through a full 360.degree. arc without interference with the column and turret. The column may be mounted on a dolly. A rack and worm pinion arrangement are provided on either the main boom or the counterweight for adjusting the distance of the counterweight from the column and turret, thus to balance the crane in a vertical plane.

REFERENCES:
patent: 742044 (1903-11-01), Low
patent: 911093 (1909-02-01), Van Wie
patent: 911632 (1909-02-01), Van Wie
patent: 3282441 (1966-11-01), Stauffer
patent: 3300059 (1965-04-01), Grey
patent: 4218171 (1980-08-01), Guinot

Affiliated with

Also associated with

Rating

Balanced lifting crane does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1522903