Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid resistance inhibits relative rotation
Patent
1989-07-06
1991-07-09
Herrmann, Allan D.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid resistance inhibits relative rotation
192 58B, F16H 926, F16H 3100
Patent
active
050301802
ABSTRACT:
This invention relates to a variable transmission apparatus utilizing either a viscous fluid clutch means or a torque converter clutch means. In both embodiments of the variable transmission apparatus, a power input carrier means is driven from a main drive shaft and interconnected through 1) a planet gear means; 2) a sun gear means; 3) a viscous fluid clutch means or a torque converter clutch means; 4) an overdrive clutch means; and 5) outwardly to an output drive means to drive an output shaft. The viscous fluid clutch means is operable through a clutch actuator assembly connected to a clutch disk assembly in order to interconnect the sun gear assembly to the planet gear assembly which, in turn, drives an output ring gear member in a preselected mode. The torque converter clutch means is operable to selectively interconnect the sun gear means to the planet gear means so as to achieve a desired output to a ring gear assembly which is connected to an output drive shaft member. Both embodiments of variable transmission apparatus are operable to be selectively changed from 1) an idle mode; 2) a torque multiplication mode; 3) a direct drive mode; and 4) an overdrive mode.
REFERENCES:
patent: 3899941 (1975-08-01), Cook
patent: 4700800 (1987-10-01), Friedrich et al.
patent: 4729262 (1988-03-01), Lanzer
patent: 4747464 (1988-05-01), Lanzer
patent: 4782930 (1988-11-01), Kuroiwa et al.
patent: 4885957 (1989-12-01), Taureg et al.
Herrmann Allan D.
Rein Phillip A.
Ta Khoi Q.
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