Silo top unloader

Details Silo top unloader Silo top unloader

1991-01-22

1992-05-12

Bucci, David A.

Material or article handling

Static receptacle and means for charging or discharging, or...

Nongravity discharging means

198515, 198518, 414317, B65G 6538

Patent

active

051121808

ABSTRACT:
A silo unloader having a framework and concentric oppositely driven rings with oppositely acting plows to shift particulate material in a silo to a central discharge defined by vertically spaced plates. The rings are driven by compressible rollers such as pneumatic tires, compressed between rings and powered by electric motors. Additional compressible friction rollers engage the wall of the silo in a vertical rolling action to guide vertical movement of the unloader and resist rotational movement of the framework which is suspended on cables.

REFERENCES:
patent: 679875 (1901-08-01), Blaisdell
patent: 822547 (1906-06-01), Nicolson
patent: 1550311 (1925-08-01), Foster
patent: 3229827 (1966-01-01), Kucera
patent: 3368703 (1968-02-01), Lusk
patent: 4022335 (1977-05-01), Lambert, Jr.
patent: 4487542 (1984-12-01), Johanning et al.
patent: 4645403 (1987-02-01), DeWit
patent: 4721425 (1988-01-01), Strocker
patent: 4773808 (1988-09-01), Fischer et al.
patent: 4815925 (1989-03-01), Buddenberg

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