Shift control system for a vehicle transmission having a backwar

Details Shift control system for a vehicle transmission having a backwar Shift control system for a vehicle transmission having a backwar

1993-09-07

1995-05-02

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74481, 74483K, 192 363, 474 38, 477112, B60K 4122, F16H 6336, G05G 114

Patent

active

054109230

ABSTRACT:
A shift adjusting device includes a cam plate and an arm. The cam plate is pivotable and operatively connected to a change speed interlocking mechanism extending between a shift pedal and a belt type stepless change speed device. The arm is also pivotable and operatively connected to a changeover interlocking mechanism extending between a switch lever and a backward/forward drive changeover device. The arm has a pin for engaging a control slot formed in the cam plate. The control slot includes an arcuate forward drive slot portion and an arcuate backward drive slot portion. When the switch lever is in a forward drive position, the pin lies in the forward drive slot portion. The forward drive slot portion allows a full stroke depression of the shift pedal, whereby a forward speed may be selected between minimum speed and maximum speed. When the switch lever is in a backward drive position, the pin lies in the backward drive slot portion. The backward drive slot portion allows only a half stroke depression of the shift pedal, whereby a backward speed may be selected between minimum speed and half the maximum speed.

REFERENCES:
patent: 1715595 (1929-06-01), Gouldbourn
patent: 3317012 (1967-05-01), Heidner et al.
patent: 4040306 (1977-08-01), Jensen
patent: 4128017 (1978-12-01), Clarke
patent: 4346617 (1982-08-01), Schroeder et al.

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