Powered link detent device

Details Powered link detent device Powered link detent device

1974-10-24

1976-04-06

Pinkham, Richard C.

Earth working

With earth marker

Multiple interconnected markers

74522, 172469, A01B 3532

Patent

active

039483266

ABSTRACT:
A device for alternately restraining movement of each end of a powered extensible and retractable link having first and second sections. The device is contained within a housing which can be inserted into a toolbar and attached to row marker assemblies to alternately lift and lower each row marker. Included as part of the device is a housing having channels therein for guiding linear movement of the link sections, a detent lever for alternately restraining movement of each link section and an actuating mechanism which causes the detent lever to alternately engage and release each link section.

REFERENCES:
patent: 3139941 (1964-07-01), Graham et al.
patent: 3428134 (1969-02-01), Bauman et al.
patent: 3575242 (1971-04-01), Olsson
patent: 3658137 (1972-04-01), Seymour et al.
patent: 3714991 (1973-02-01), Rieser
patent: 3774691 (1973-11-01), Oak et al.

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