Earth working – Miscellaneous
Patent
1989-09-06
1990-05-08
Reese, Randolph A.
Earth working
Miscellaneous
172456, 172466, A01B 7304
Patent
active
049230174
ABSTRACT:
A folding mechanism for the wing section of an agricultural implement frame includes a main hinge interconnecting the wing section to the center section for pivotal motion about a horizontal axis. A hydraulic cylinder is pivotally connected at the butt end to the center frame section and at the rod end to a pivot juncture between a locator link and a push link. When the hydraulic cylinder is extended, the push link forces the wing section to rotate to the folded position; and the locator link guides the movement of the pivot juncture into an over-center, locked position so that the wing section will remain in the transport position even if hydraulic pressure is lost.
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patent: 3774693 (1973-11-01), Orthman
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patent: 4074766 (1978-02-01), Orthman
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patent: 4512416 (1985-04-01), Smith
patent: 4526235 (1985-07-01), Kinzenbaw
patent: 4660654 (1987-04-01), Wiebe et al.
Barry Alan F.
Meek Roger L.
Kinze Manufacturing Inc.
Reese Randolph A.
Thompson Jeffrey L.
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