192 clutches and power-stop control – Clutches – Progressive engagement
Patent
1979-07-16
1981-11-17
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Progressive engagement
74339, F16D 2306
Patent
active
043006680
ABSTRACT:
A synchromesh device for a transmission of an industrial truck such as a fork lift truck includes a main shaft, forward and reverse change gears, synchronizing hub fixed to the main shaft by means of spline grooves, a coupling sleeve axially slidably engaged with spline grooves formed in the outer circumference of the synchronizing hub, and balk-rings formed in their inner surfaces with conical surfaces facing to conical surfaces formed in the side of a clutch gear integral with the forward change gear and of a clutch gear integral with the reverse change gear, respectively.
According to the invention, conical angles of the conical surfaces are more than 10.degree. and preferably less than 11.degree., thereby reducing surface pressures acting between the synchronizing slide surfaces during the synchronization to improve the durability remarkably.
REFERENCES:
patent: 2087070 (1937-07-01), Reggio
patent: 2267452 (1941-12-01), Fishburn
patent: 2333165 (1943-11-01), Fishburn
patent: 2788874 (1957-04-01), Forster
patent: 2981390 (1961-04-01), Doerper
patent: 3861509 (1975-01-01), Inove et al.
patent: 4189041 (1980-02-01), Muller
Ikkatai Mitsuo
Mizukoshi Yukio
Nozawa Koji
Takegami Norio
Herrmann Allan D.
Nissan Motor Co,. Ltd.
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