Automatic transmission for motorcycles

Details Automatic transmission for motorcycles Automatic transmission for motorcycles

1985-09-19

1987-06-09

Staab, Lawrence

Machine element or mechanism

Elements

Gear casings

74681, 280230, F16H 3700

Patent

active

046711341

ABSTRACT:
An automatic transmission for motorcycles includes a planetary gear train. The power input is applied to a ring gear of the train by a fixed speed ratio transmission and to a sun gear by a variable speed ratio transmission so that the sun gear rotates in a direction opposite to that of the ring gear. The power is output from the planetary gear carrier. The power output is zero when the pitch line velocity of the ring gear is equal to that of the sun gear. A centrifugal clutch is mounted on the input shaft for engaging fixed speed ratio transmission when the rotational speed of the input shaft reaches a predetermined value. Furthermore, another shaft is disposed parallelly near the input shaft and connected to the input shaft by means of two interengaging gears which are respectively mounted on the two shafts so as to act as a balancing shaft for the crank shaft of the engine.

REFERENCES:
patent: 2974544 (1961-03-01), Miner
patent: 3152490 (1964-10-01), Lemieux
patent: 3481221 (1969-12-01), Gaskins
patent: 3670594 (1972-06-01), Roper
patent: 4305488 (1981-12-01), McIntosh
patent: 4354401 (1982-10-01), Omitsu
patent: 4406178 (1983-09-01), Gillade
patent: 4589303 (1986-05-01), Roberts
patent: 4624153 (1986-11-01), Itoh et al.

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