B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
137/92, 138/74.1
B62D 33/06 (2006.01) B62D 33/07 (2006.01)
Patent
CA 1043661
TITLE: TILT CAB POWER SYSTEM AND VALVE CONTROL THEREFOR ABSTRACT OF DISCLOSURE A hydraulic system and latching mechanism for a cab tiltably mounted to the chassis of a vehicle. The cab is normally disposed over the engine of the vehicle and is pivot- ally attached to the chassis at its forward end for movement through 90°. The cab is powered by an air-motor-actuated hydraulic pump which energizes lifting cylinders disposed between the chassis and cab. When the system is energized, a hydraulically actuated latch is released prior to commencement of the tilting movement of the cab. A direction-control valve is employed which, when in the neutral or closed position, utilizes the pressures generated in the hydraulic system by the weight of the tilted cab in certain positions to assist the valve in sealing the reservoir port in the valve against leakage thereby preventing the cab from creeping.
234163
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