Shift controller

Details Shift controller Shift controller

1983-10-05

1985-08-13

Tapolcai, William E.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

G05G 912

Patent

active

045342377

ABSTRACT:
An apparatus for controlling gear changes when a shifter of a transmission is moved between a forward gear and a first reverse gear position, passing through a neutral position, for preventing changes of gear when the drive shaft is revolving. The controller includes a manually operable switch for selectively actuating the shifter to move it between the forward, neutral and reverse positions; a generator rotatably connected to the shaft for generating a rotation-indicating signal; a position-sensing relay for transmitting the rotation-indicating signal only when the shifter is in the neutral position; and a pair of disabling relays which, when in their normally closed state, allow the manual switch to control the movement of the shifter, but when the position-sensing relay is actuated, the rotation-indicating signal, after being passed through a signal processor, is used to energize the disabling relays and interrupt the actuation signal generated by the manual switch until the drive shaft stops rotating and the disabling relays are deactivated, returning control of the shifter to the manual switch.

REFERENCES:
patent: 1250355 (1917-12-01), Robinson et al.
patent: 3602061 (1971-08-01), Nemiroff
patent: 4067423 (1978-01-01), Schneider et al.
patent: 4126055 (1978-11-01), Forsyth
patent: 4255984 (1981-03-01), Abels et al.
patent: 4381682 (1983-05-01), Kudo et al.
patent: 4455885 (1984-06-01), Beig

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