Automatic transmission shift control device

Details Automatic transmission shift control device Automatic transmission shift control device

1988-07-01

1989-12-05

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 4R, B60K 4128

Patent

active

048846686

ABSTRACT:
A position pin is pushed down by an effort applied on a control button to disengage the position pin from a position plate when a selector lever is to be moved from a parking position to other gear positions. A bushing is mounted on a post of the selector lever for ratation but against axial movement. The bushing has at the upper end a pair of diameterically opposed notches with which the position pin is engaged when pushed down to effect the above disengagement. When an ignition key is at the "on" position and the selector lever is at the parking position, the bushing is rotated into a position where the notches are misaligned with the position pin unless a brake pedal is fully depressed, i.e., an effort applied on the control button for pushing the position pin downward is received by the upper end of the bushing whereby downward movement of the position pin for disengagement thereof from the position plate is prevented by the bushing and therefore it is impossible to move the selector lever from the parking position to other gear positions.

REFERENCES:
patent: 3942614 (1976-03-01), Thompson
patent: 4473141 (1984-09-01), Mochida
patent: 4768610 (1988-09-01), Pagel et al.

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