Motor vehicles – Bodies – Movable cab or operator's station
Patent
1981-11-17
1984-04-03
Peters, Jr., Joseph F.
Motor vehicles
Bodies
Movable cab or operator's station
91445, B62D 2700
Patent
active
044402520
ABSTRACT:
A hydraulic tilting mechanism for a driver's cab of a vehicle, with the mechanism including a double-acting working cylinder having accommodated therein a displaceable piston. Ducts or lines are provided for connecting the working cylinder with a supply tank or source of hydraulic fluid, with a pump being arranged in one of the ducts or lines and a joint control valve for controlling a movement of the piston being arranged in the ducts or lines. A closable duct by-passes the working cylinder and branches off from a three-way valve having two switch positions. The three-way valve is located in the duct or line leading to a first cylinder space which causes a tilting of the driver's cab. The three-way valve is adapted to be electromagnetically switched by way of a key. The closable duct or by-pass line discharges into a connecting duct or line arranged between the control valve and a second cylinder space which is adapted to cause a return of the driver's cab. A non-return or check valve is disposed between the three-way valve and the connecting duct into which the by-pass duct or line discharges. In one position of the three-way valve, the duct or line to the first cylinder space is opened and the by-pass duct or line is blocked and, in a second position, the duct or line to the first cylinder space is blocked and the by-pass duct or line is shut so that by means of the by-pass line or duct the hydraulic fluid is fed by the pump back to the storage tank.
REFERENCES:
patent: 2825306 (1958-03-01), Buri
patent: 3033001 (1962-05-01), Russell et al.
patent: 3270625 (1966-09-01), Huntington et al.
patent: 3792747 (1974-02-01), Knutson
patent: 3801151 (1974-04-01), Reynolds et al.
patent: 3945299 (1976-03-01), Fritz et al.
Hensche Karl-Heinz
Steinecke Rudolf
Daimler-Benz AG
Peters Jr. Joseph F.
Weaver Ross
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