Interlock device for a transmission shift mechanism

Details Interlock device for a transmission shift mechanism Interlock device for a transmission shift mechanism

1980-07-03

1984-04-10

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74745, 180247, G05G 510, B60K 1734

Patent

active

044413793

ABSTRACT:
An interlock device for a shift mechanism of a multi-speed power transmission device includes a shift rod capable of selective axial positioning at a plurality of predetermined locations for specific gear ratio operating conditions and a neutral non-operating condition. The shift rod includes detents in the surface thereof associated with these locations and a position locating device is aligned with the shift rod to be capable of being forced into engaging contact with one of these detents by the introduction of pressurized air into a power cylinder acting thereon. Selective axial positioning of the shift rod is prevented when the torque transmitting power source providing the input to the transmission device is in a power mode and causes the pressurized air to be applied to the power cylinder.

REFERENCES:
patent: 2637221 (1953-05-01), Backus et al.
patent: 2654268 (1953-10-01), Perkins
patent: 2738690 (1956-03-01), Perkins
patent: 3049929 (1962-08-01), Wagner

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