Power shovel and crowd system therefor

Details Power shovel and crowd system therefor Power shovel and crowd system therefor

1975-01-31

1976-07-27

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

60413, 60414, 60416, 60464, F15B 102

Patent

active

039712150

ABSTRACT:
A power shovel comprising a body; a front end assembly mounted on the body including a dipper; means for crowding the dipper; means for hoisting the dipper; and an energy regeneration system including an energy storing means and means actuated by a predetermined movement of at least one component of the front end assembly for charging the energy storing means, the energy storing means providing in the loaded condition a force applicable to a component of the front end assembly for at least biasing such component toward a predetermined movement.

REFERENCES:
patent: 2645899 (1953-07-01), Aller et al.
patent: 2780063 (1957-02-01), Bacchi
patent: 3359727 (1967-12-01), Hann et al.
patent: 3779135 (1973-12-01), Sugimura
patent: 3823558 (1974-07-01), Tittman et al.

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