Clod crumbler

Details Clod crumbler Clod crumbler

1988-07-29

1990-04-24

Johnson, Richard J.

Earth working

With drive means for tool or cleaner

With non-driven tool

172552, 172520, A01B 2906

Patent

active

049192116

ABSTRACT:
A crumbler roller device 10 comprises two co-axial soil-engaging rotors 12, 13 mounted one within the other and drive means operative to drive the inner rotor 12 at a different rotational speed to the outer rotor 13.

REFERENCES:
patent: 809716 (1906-01-01), Miller
patent: 1519776 (1924-12-01), Fazekas et al.
patent: 1552362 (1925-09-01), Versteeg
patent: 2163726 (1939-06-01), Blunt
patent: 3392791 (1968-07-01), Orthman
patent: 3897830 (1975-08-01), van der Lely
patent: 4339004 (1982-07-01), van der Lely

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