Positioning gear for moving a load suspended by at least one cab

Details Positioning gear for moving a load suspended by at least one cab Positioning gear for moving a load suspended by at least one cab

1988-09-23

1991-06-11

Peters, Jr., Joseph F.

Traversing hoists

Miscellaneous

212160, 212225, 212195, 212 71, 212 77, B66C 1340, B66C 2379, B66C 700

Patent

active

050225430

ABSTRACT:
Positioning device to be incorporated as a controllable coupling element between a load and the cable of a hoisting apparatus. The element includes a hydraulic cylinder connected to a hydro-pneumatic transformer and to a hydro-pneumatic reservoir. The transformer is connected to a source of pressurized gas through a first valve, a second valve being provided in the line from the cylinder to the reservoir. The cylinder, the transformer, the pressurized gas source, the reservoir and both valves are mounted in a common frame, both valves being operable from a distance.

REFERENCES:
patent: 101681 (1870-04-01), Towle
patent: 2939431 (1960-06-01), Bottje et al.
patent: 2949894 (1960-08-01), Hewitt et al.
patent: 3635020 (1972-01-01), Mahlmann
patent: 3894476 (1975-07-01), Cobb
patent: 4215844 (1980-08-01), Bowen
patent: 4401009 (1983-08-01), Zeuner et al.
patent: 4646517 (1987-03-01), Wright

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