Tilt cab power stream and valve control therefor

Details Tilt cab power stream and valve control therefor Tilt cab power stream and valve control therefor

1977-07-06

1979-03-20

Betts, Kenneth H.

Motor vehicles

Bodies

Movable cab or operator's station

B62D 3306

Patent

active

RE0299383

ABSTRACT:
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 pivotally attached to the chassis at its forward end for movement through 90.degree.. 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.

REFERENCES:
patent: 2543210 (1951-02-01), Wagstaff
patent: 3041975 (1962-07-01), Atherton et al.
patent: 3276547 (1966-10-01), Muller et al.
patent: 3533234 (1970-10-01), Futamata et al.
patent: 3667566 (1972-06-01), Hopkins
patent: 3706470 (1972-12-01), Johnson
patent: 3761123 (1973-09-01), Neill et al.
patent: 3797882 (1974-03-01), Brimhall
patent: 3801151 (1974-04-01), Reynolds et al.
patent: 3831999 (1974-08-01), Sonneborn
patent: 3841693 (1974-10-01), Reynolds et al.

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