Mower with release safety device

Details Mower with release safety device Mower with release safety device

1990-02-07

1990-11-20

Kisliuk, Bruce M.

Harvesters

Motorized harvester

With condition-responsive operation

56 153, 56 158, 56 159, A01D 7518

Patent

active

049708481

ABSTRACT:
A mower includes a first chassis attachable to a tractor for movement in a work direction, a second chassis having first and second structures connected at a joint extending perpendicular to the work direction, and connecting rods, each having respective ends pivotally connected to the first chassis and to the second structure of the second chassis so as to form with the first and second chassis an upwardly deformable quadrilateral deformable such that the work elements may move to adapt to ground contours. A release safety device normally prevents pivoting of the first structure about the joint but permits pivoting of the first structure about the joint axis when the first structure or the working elements hooks an obstacle during movement of the mower in the work direction. This limits forces applied to the mower.

REFERENCES:
patent: 3390515 (1968-07-01), Schaible et al.
patent: 3543489 (1970-12-01), Maier et al.
patent: 3545184 (1970-12-01), Liepold et al.
patent: 3664057 (1972-05-01), Dunn
patent: 4722173 (1988-02-01), Covington et al.
patent: 4747255 (1988-05-01), Roden
patent: 4907400 (1990-03-01), Roden

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