Agricultural implement sectional frame with depth limit

Details Agricultural implement sectional frame with depth limit Agricultural implement sectional frame with depth limit

1980-11-28

1982-08-31

Stouffer, Richard T.

Earth working

Automatic power control

60484, 91410, 172310, 172401, 280 4323, A01B 63111

Patent

active

043467636

ABSTRACT:
A multi-segment farm implement flexible tool bar or frame is provided with a hydraulic system including a rotary flow divider for raising and lowering each segment of the sectional frame in synchronous movement with the other sections. A mechanical linkage associated with a ground wheel positioning cylinder also activates the hydraulic fluid control system limiting the downward movement of the implement mounted to the sectional frame on its supporting gear.

REFERENCES:
patent: 3481489 (1969-12-01), Stauffer
patent: 3486761 (1969-12-01), Fay
patent: 3606051 (1971-09-01), Peterson et al.
patent: 3731748 (1973-05-01), Sullivan et al.
patent: 3731749 (1973-05-01), Sullivan et al.
patent: 4207951 (1980-06-01), Wilcox et al.
patent: 4237688 (1980-12-01), Demmers
patent: 4261275 (1981-04-01), Demmers

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