Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Patent
1989-11-21
1992-03-24
Diehl, Dwight
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
475284, 475288, F16H 344, F16H 5710
Patent
active
050983571
ABSTRACT:
A planetary gear device having a first and a second single-pinion planetary gear unit and a third double-pinion planetary gear unit, which are coaxially disposed so as to provide different speed reduction ratios. The three gear units have respective first, second and third sun gears, respective first, second and third ring gears, and respective first, second and third carriers rotatably supporting planetary pinions. The first and second sun gears are fixed together or selectively connectable to each other, and the first carrier, second ring gear and third carrier are fixed together or selectively connectable to each other. Further, the second carrier and the third sun gear are fixed together or selectively connectable to each other. The present arrangement allows shifting operations of the gear device, without concurrent disengagement and engagement of different clutches.
REFERENCES:
patent: 2911853 (1959-11-01), Sand
patent: 3678784 (1972-07-01), Lemieux
patent: 3811343 (1974-05-01), Mori et al.
patent: 3863524 (1975-02-01), Mori et al.
patent: 3877320 (1975-04-01), Iijima
patent: 3899940 (1975-08-01), Iijima
patent: 3946624 (1976-03-01), Murakami et al.
patent: 3971267 (1976-07-01), Murakami et al.
patent: 4089238 (1978-05-01), Forster et al.
patent: 4233861 (1980-11-01), Gaus et al.
patent: 4660439 (1987-04-01), Hiraiwa
patent: 4774856 (1988-10-01), Hiraiwa
patent: 4939955 (1990-07-01), Sugano
patent: 4963124 (1990-10-01), Takahashi et al.
Abe Akiharu
Asada Toshiyuki
Higushiyama Yasuhiko
Moriguchi Naoki
Nakawaki Yasunori
Diehl Dwight
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Automatic planetary gear transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic planetary gear transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic planetary gear transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2006052