Scoop-and-dump jack for shovel-loader

Details Scoop-and-dump jack for shovel-loader Scoop-and-dump jack for shovel-loader

1992-08-27

1994-05-03

Huppert, Michael S.

Material or article handling

Vertically swinging load support

Shovel or fork type

91 1, 92 66, 92 5R, E02F 300

Patent

active

053082206

ABSTRACT:
The invention concerns a scoop-and-dump jack of a loader shovel or a fork of a shovel loader and comprising a piston-rod extension 46a guided in a sealed borehole of the jack cylinder-bottom 43 to achieve a dumping motion at least as rapid as the retracting motion and to permit simple assembly and maintenance of the jack, the diameter of said extension corresponding at least to that of the piston rod 46, the jack bearing-eye 50 and the jack cylinder-bottom being integrally joined by a connection member 49 extending over most of the length of advance of the piston-rod extension 46a, and the receiving space 51 for the piston-rod extension comprising a laterally open access for purposes of assembly or exchange of the guide means and seals 44, 45 in the jack cylinder-bottom.

REFERENCES:
patent: 2719404 (1955-10-01), Hobson
patent: 3095785 (1963-07-01), Cahill
patent: 3505929 (1970-04-01), Coppola et al.
patent: 4414881 (1983-11-01), Devaud
patent: 4987822 (1991-01-01), Stoll

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