Gear change mechanism

Details Gear change mechanism Gear change mechanism

1990-09-19

1992-05-19

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

192 82R, B60K 2000, F16D 1100

Patent

active

051137151

ABSTRACT:
Gearbox selector forks are commonly mounted for axial movement on a supporting rail which is rigidly mounted in the gearbox casing. When the fork is moved axially along the rail to move a coupling sleeve it can tilt and jam on the rail if it experiences excessive actuation loads which may inhibit or at least delay the operation of the associated synchromesh unit and engagement of the required gear. The present invention overcomes this problem by providing a support rail 14 which is itself axially displaceable against the action of a resilient means 32 thereby ensuring that the required selector fork 16 movement for gear engagement may be achieved even when the fork 16 is jammed on the support rail 14.

REFERENCES:
patent: 1413058 (1922-04-01), Richardson
patent: 2105485 (1938-01-01), Larson
patent: 2535381 (1950-12-01), Andrews
patent: 4299134 (1981-11-01), Roy et al.
patent: 4335623 (1982-06-01), Kronstadt
patent: 4509385 (1985-04-01), Inui et al.

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