Hydraulic cab tilting systems

Details Hydraulic cab tilting systems Hydraulic cab tilting systems

1977-04-11

1979-11-13

Bertsch, Richard A.

Motor vehicles

Bodies

Movable cab or operator's station

180 8916, 296 35R, B62D 3306

Patent

active

041740165

ABSTRACT:
A hydraulic ram system for tilting a vehicle cab which is resiliently mounted on the vehicle frame includes a ram cylinder of which that end in which the ram piston is located when the cab is in the lowered position is of increased bore diameter to render the piston passive in this position, a restriction being provided in the lower ram line across which a pressure drop is created when fluid is pumped through the line, while in the upper ram line a valve is provided responsive to the pressure differential across the restriction and thereby operable to interconnect the upper and lower ram lines.

REFERENCES:
patent: 3581840 (1971-06-01), Hirst, Jr.
patent: 3985194 (1976-10-01), Knutson
patent: 4085960 (1978-04-01), McDermid

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