Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Patent
1996-04-02
1998-02-10
Ta, Khoi Q.
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
475276, 475281, F16H 362
Patent
active
057162980
ABSTRACT:
A multiple-speed automatic transmission includes two simple planetary gear units and a third double planetary gear unit having two sets of planet pinions engaged mutually, one of the sets engaged continually with a sun gear and the other set engaged continually with a ring gear. An input shaft is driveably connected to the carrier of the double gear unit and to the sun gear of a first simple gear unit. The output is taken on a common element driveably connected to the ring gear of the second gear unit, carrier of the first gear unit, and an output shaft. The sun gear of the double gear unit is permanently fixed against rotation. A first brake is adapted to hold the sun gear of the second gear unit against rotation and a brake band is adapted to hold the carrier of the second gear unit against rotation. A first friction clutch connects the ring gear of the third gear unit, sun gear of the second gear unit, and carrier of the third gear unit mutually. A second clutch driveably connects the ring gear of the second gear unit to the input shaft, and another clutch driveably connects the carrier of the double planetary gear unit and carrier of the second gear unit.
REFERENCES:
patent: 3863524 (1975-02-01), Mori et al.
patent: 3946622 (1976-03-01), Murakami et al.
patent: 3946623 (1976-03-01), Murakami et al.
patent: 3979974 (1976-09-01), Murakami
patent: 4143562 (1979-03-01), Murakami et al.
patent: 4242924 (1981-01-01), Melhorn et al.
patent: 4368649 (1983-01-01), Vahratian et al.
patent: 4418585 (1983-12-01), Pierce
patent: 4483215 (1984-11-01), Ishimaru et al.
patent: 4509389 (1985-04-01), Vahratian et al.
patent: 4702125 (1987-10-01), Kalns
patent: 4939955 (1990-07-01), Sugano
patent: 4976670 (1990-12-01), Klemen
patent: 5007887 (1991-04-01), Asada
patent: 5222923 (1993-06-01), Hotta et al.
Beim Rudolf
McCarrick Daniel W.
Ford Global Technologies Inc.
McKenzie Frank G.
Ta Khoi Q.
LandOfFree
Multiple-speed automatic transmission for an automotive vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple-speed automatic transmission for an automotive vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple-speed automatic transmission for an automotive vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2073097