Shift control for change speed gear transmission for vehicle

Details Shift control for change speed gear transmission for vehicle Shift control for change speed gear transmission for vehicle

1978-12-15

1981-06-30

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74475, 74745, 74850, G05G 912, G05G 500

Patent

active

042756120

ABSTRACT:
A shift control for a compound change speed gear transmission of the range type which provides two separate sets of shift paths (A and B), one for each range of the auxiliary transmission, and individual positions in each shift path for selection of individual ratios in the main transmission. The control comprises at least two parallel axially slidable shift rods (11, 12 and 13) and a transverse cross shaft (14) which is axially and rotationally movable. Each shift rod (11 and 12) defines at least two axially spaced pairs of faces (16a, 16b, 17a and 17b) which pairs are axially spaced apart for selective engagement by a selector finger (15) carried by the cross shaft. At least one of the pairs of faces (16a, 16b, 17a and 17b) on each shift rod is disposed between the pairs of faces carried by the other shift rod. A switch (25) is operable to shift the auxiliary transmission as a result of movement from one shift path to the other shift path and a resilient detent (62) is provided to inform the operator when a change in shift path is attempted.

REFERENCES:
patent: 2932988 (1960-04-01), Flynn et al.
patent: 3229551 (1966-01-01), Stuckey
patent: 3498155 (1970-03-01), Ivanchich et al.

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