Multiple gear-ratio automatic transmission

Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake

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Details

475280, F16H 3700, F16H 344, F16H 5710

Patent

active

049267132

ABSTRACT:
A novel power transmission mechanism is provided in which a wide variety of both forward and reverse speed ratios are achieved by coupling two or more planetary gearsets in a unique way. Power input is applied to one of the sun gear, ring gear and planet carrier of the first planetary gearset while another of the gears is maintained stationary and output is taken from one of the sun gear, ring gear and planet carrier not maintained stationary in the first gearset (except that, when power is transmitted to the ring gear, the planet carrier is not maintained stationary). The procedure then is repeated for the second and any subsequent planetary gearset which usually has an overall different gear ratio from the first planetary gearset. Each planetary gearset is capable of producing four forward output ratios and one reverse ratio. Because of the different ratios of the various gearsets, multiple ratios of output are attainable. Individual hydraulic clutches are used to effect clamping of elements to effect power transmittal and locking. Power transfer plates permit selective input to and output from the gear elements. A stationary central shaft allows the sun gears to be held locked when required. A reaction sleeve is employed as the means to input to the ring gear to hold the ring gear or planet carrier stationary as needed.

REFERENCES:
patent: 2523619 (1950-09-01), Grebb
patent: 3031901 (1962-05-01), Simpson
patent: 3209620 (1962-09-01), Moan
patent: 3688601 (1972-09-01), Dach
patent: 3733928 (1973-05-01), Uozumi et al.
patent: 3893352 (1975-07-01), Cotton
patent: 3956946 (1976-05-01), Murakami et al.
patent: 4015486 (1977-04-01), Zach, Jr.
patent: 4235125 (1980-11-01), Perlin
patent: 4327604 (1982-05-01), Evans
patent: 4334440 (1982-06-01), Fonck
patent: 4446758 (1984-05-01), Winzeler et al.
patent: 4472984 (1984-09-01), Cook
patent: 4579019 (1986-04-01), Gabriele
patent: 4598610 (1986-07-01), Kim
patent: 4607541 (1986-08-01), Miura et al.
patent: 4625588 (1986-12-01), Brickley
patent: 4638688 (1987-01-01), Hiraiwa
patent: 4738162 (1988-04-01), Slotosch

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