Power transmission

Details Power transmission Power transmission

1990-02-20

1991-05-07

Herrmann, Allan D.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

475218, 475219, 475290, 475302, 475330, F16H 3706

Patent

active

050132890

ABSTRACT:
A power transmission has three countershaft gear sets which provide selective input members for a pair of interconnected simply planetary gear arrangements. The planetary gear arrangements have the sun gears interconnected, a ring gear and a carrier interconnected, another carrier connected with a transmission output shaft and another ring gear connected with one of the transfer gear sets. The other two transfer gear sets are connected with respective ones of the interconnected members. A plurality of selectively engageable clutches and brakes are arranged to establish input and reaction members for the planetary gear arrangement to provide six forward speed ratios and one reverse speed ratio.

REFERENCES:
patent: 3915033 (1975-10-01), Polak
patent: 4046031 (1977-09-01), Ott et al.
patent: 4614133 (1986-09-01), Nerstad et al.

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