Motor vehicles – Bodies – Tractor and similar vehicle cabs
Patent
1986-06-26
1988-04-19
Bertsch, Richard A.
Motor vehicles
Bodies
Tractor and similar vehicle cabs
16294, 49386, 180136, 296146, B60J 504
Patent
active
047383291
ABSTRACT:
An operator's station mounted on the rear bogie of an articulated tractor and having a door that swings out from a hinge on its rear edge and in which the front bogie may swing relative to the rear bogie so that parts of the tractor on the front bogie may move into the zone of swinging of the door, the improvement residing in the hinge structure and door positioning structure which automatically shifts the door into either its fully opened or fully closed positions and out of the area in which the aforesaid tractor parts may shift. The structure includes means for hinging the door to swing about a vertical axis from its rear edge and a link structure that is connected to a post on the operator's station and which has a rear end connected thereto on a pivot structure that is offset inwardly and rearwardly from the hinge axis of the door. The link structure further includes a portion that extends from its rear and forwardly alongside a face of the door to a front end which is connected to the door. The link structure also includes a spring under tension which creates a biasing force on the door to swing the door to its fully opened and closed positions as the link structure passes to opposite sides of the hinge axis of the door.
REFERENCES:
patent: 2189818 (1940-02-01), Murrin
patent: 3967850 (1976-07-01), Whisler
Bertsch Richard A.
Deere & Company
Hill Mitchell J.
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