Power shovel and crowd system therefor

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

1976-07-12

1977-09-06

Spar, Robert J.

60413, E02F 332

Patent

active

040462706

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: 3363792 (1968-01-01), Hoppe
patent: 3393509 (1968-07-01), Kempson
patent: 3501034 (1970-03-01), Baron
patent: 3581919 (1971-06-01), Karlsson
patent: 3779135 (1973-12-01), Sugimura
patent: 3856161 (1974-12-01), Baron

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