Transmission and reverse gear synchronizing therefor

Details Transmission and reverse gear synchronizing therefor Transmission and reverse gear synchronizing therefor

1982-02-18

1984-08-07

Herrmann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

744115, 74331, 192 4A, F16H 506, F16H 5710, F16H 308

Patent

active

044636229

ABSTRACT:
Reverse gear synchronizing for a transmission of the type commonly used on large off-road vehicles is accomplished without the use of a reverse gear synchronizing clutch. The input shaft of the transmission carries a high and low gear separated by a high/low synchronizer clutch. Also, carried on the input shaft is a reverse gear and conventional clutch. A shift rod has a first shifting collar in shifting communication with the high/low synchronizer clutch and a second shifting collar in communication with the reverse clutch. A cam containing travel channels is in linked communication with the shifting collars such that movement of the cam produces clutch movement to engage the high, low, or reverse gear. The travel channels of the cam are so defined to enable relative movement between the high/low synchronizer and reverse clutch, whereby clashing between the reverse clutch and pin of the reverse gear is eliminated when the transmission gearing is changed from neutral to reverse.

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