Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Patent
1989-01-30
1990-04-03
Diehl, Dwight G.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
475151, 475211, F16H 3706
Patent
active
049130030
ABSTRACT:
A stepless transmission is provided with an input shaft having gear structure. A variator shaft also has gear structure. A variator is connected between the input shaft and the variator shaft. The variator alters the relative speeds of rotation between the input shaft and the variator shaft. An output shaft has gear structure that is operatively connected to the input shaft gear structure and the variator shaft gear structure. The speed and direction of rotation of the output shaft is related to the difference between the tangential velocities of the input shaft gear structure and the variator shaft gear structure acting on the output shaft gear structure. Structure for increasing the rotational speed delivered from the input shaft to the variator can be provided. Reduction structure for gearing down the rotational speed of the variator shaft gear structure can also be provided. Controls for the transmissions are also disclosed. The controls act to slow or speed the output of the transmission or to change the direction of the output. A braking system is provided which will act in either direction of rotation to return the transmisison to the neutral position and to hold it there.
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Machine Design Article 6/65, p. 12.
Blum Alvin S.
Diehl Dwight G.
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