Earth working – Tool – standard or connection – Spring biased or formed tool or tool part
Patent
1985-06-17
1987-08-04
Johnson, Richard J.
Earth working
Tool, standard or connection
Spring biased or formed tool or tool part
172708, A01B 2302
Patent
active
046839585
ABSTRACT:
A cultivator shank is adapted for mounting at one end on a cultivator frame and has an open C-shaped central section with its other end receiving a ground engaging tool. In between its ends, the shank tapers through a profile of changing sectional dimension so that its central section is deeper or thicker, in line with the direction of travel, than the dimension of the central section transverse to the direction of travel.
REFERENCES:
patent: 111852 (1871-02-01), Johnson
patent: 642349 (1900-01-01), Martin
patent: 1290446 (1919-01-01), White
patent: 4047823 (1977-09-01), Mydels
patent: 4453602 (1984-06-01), Larsen
patent: 4534418 (1985-08-01), Hegemann
Lange Kenneth
Malinowski Leon
Johnson Richard J.
Leon's Mfg. Co. Ltd.
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