Crane

Details Crane Crane

1993-09-23

1995-01-10

Noland, Kenneth W.

Elevator, industrial lift truck, or stationary lift for vehicle

Industrial lift truck or required component thereof

Having specific drive-means for load support

414282, B66B 1104

Patent

active

053798635

ABSTRACT:
A vertical run drive unit 30 for driving an upward and downward movable carriage 16 mounted to one side of a support post 12A comprises a pair of sheaves 36, 40 arranged in vertically spaced apart relation, and a vertical run drive mechanism 33 interlockingly connected to one of the sheaves 36. There are provided wires 45A, 45B, 45C, 45D which are each passed over the upper sheave 20 and trained about the lower sheave 36 from opposite directions, the wires 45A, 45B, 45C, 45D being connected at one end to the carriage 16 and at the other end to counterweights 51A, 51B. A load applied to both ends of each wire can be caused to act toward tensioning the wire relative to the sheaves, thereby to exert a strong force of friction on the wire, so that sufficient force of movement can be obtained. The counterweights need not be large-sized to provide a strong frictional force and can be made relatively low in height, it being thus possible to set a longer stroke for the carriage.

REFERENCES:
patent: 379260 (1893-10-01), Pifre
patent: 657380 (1900-09-01), Baldwin
patent: 684390 (1901-10-01), Venn
patent: 921646 (1909-05-01), Larson
patent: 2169440 (1939-08-01), Weiss
patent: 3592348 (1971-07-01), Atwater
patent: 3840131 (1974-10-01), Castaldi
patent: 3934741 (1976-01-01), Wentz
patent: 4222140 (1980-09-01), Olewinski et al.
patent: 4358239 (1982-11-01), Dechantsreiter
patent: 5207555 (1993-05-01), Shirai

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-845061