Electro-mechanical bypass for hydrostatic transmission

Details Electro-mechanical bypass for hydrostatic transmission Electro-mechanical bypass for hydrostatic transmission

1998-12-30

2000-11-14

Ryznic, John E.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60487, 91459, F16D 3102

Patent

active

061453129

ABSTRACT:
An electromechanical bypass mechanism is provided for use in a hydrostatic transmission, to enable the user to open or close a bypass to the hydraulic circuit of the transmission through use of an switch mechanism attached to the bypass mechanism in the circuit. The invention also comprises an improved neutral feature for hydrostatic transmissions, with a switch connected to the control mechanism for the unit, whereby the switch is activated to place the unit in bypass when said mechanism is placed in the neutral location. A means is provided for opening and closing a shunt or bypass between the high pressure side and the low pressure side of the hydrostatic system which is triggered by an electrical signal.

REFERENCES:
patent: 3360933 (1968-01-01), Swanson et al.
patent: 3593519 (1971-07-01), Fuhrimann
patent: 3895490 (1975-07-01), Pachins
patent: 3972189 (1976-08-01), Knapp et al.
patent: 3973400 (1976-08-01), Petersen
patent: 4761953 (1988-08-01), Rosman
patent: 4941320 (1990-07-01), Kersten et al.
patent: 5438831 (1995-08-01), Okada
patent: 5819536 (1998-10-01), Mentink

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