Land vehicles – Wheeled – Articulated vehicle
Patent
1986-01-21
1987-09-29
Love, John J.
Land vehicles
Wheeled
Articulated vehicle
280432, 340 52R, B60Q 100
Patent
active
046964860
ABSTRACT:
A rear steer angle indicator unit for an agricultural or earth moving tractor having a steerable mainframe articulately connected to an independently wheel-mounted rear engine frame: the rear steer indicator unit comprising a sensing unit (33) capable of converting mechanical motion to electrical signals and mounted on a portion (22) of a mainframe (12) spaced away from the articulation joint (18) for the tractor (11); a gauge (37) mounted in the tractor cab (13) and electrically connected to the sensing unit (33) for receiving signals therefrom indicating the direction of movement of the engine frame (14) relative to the mainframe (12); a sensing arm unit (40) mounted independently of the sensing unit (33) in a bushing (42) provided therefore in a portion (22) of the mainframe (12); and a linkage unit (45) connected between the sensing arm unit (40) and a tongue member (27) of the engine frame (14) for translating movement of the engine frame (14) to rotation of the sensing arm (40) within the sensing unit (33); all parts of the indicator unit (10) being protected from inadvertent stepping of the operator and maintenance personnel, rocks, debris and the like, such protection afforded by the provision of side and bolster plates affixed to the mainframe (12) below the cab (13) and to one side of the indicator unit (10).
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patent: 3947839 (1976-03-01), Zigmant
patent: 4008466 (1977-02-01), Smith
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patent: 4221273 (1980-09-01), Finden
patent: 4465292 (1984-08-01), Fry et al.
Deere & Company
Hill Mitchell J.
Love John J.
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