Power shift transmission for motor vehicles

Machine element or mechanism – Gearing – Plural power paths to and/or from gearing

Patent

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Details

74753, 74740, F16H 5710, F16H 3700

Patent

active

040432254

ABSTRACT:
A speed change gear system for industrial vehicles, includes a first planetary gear set having a first sun gear, a plurality of first planetary gears engaged with the first sun gear, a first ring gear interengaged with the first planetary gears, and a first carrier rotatably supporting the first planetary gears and connected with an input shaft, a second planetary gear set having a second sun gear connected with the first ring gear, a plurality of second planetary gears engaged with the second sun gear, a second ring gear interengaged with the second planetary gears and connected with the first sun gear, and a second carrier rotatably supporting the second planetary gears and connected with an output gear member. A brake member is also provided for simultaneously locking the first sun gear and the second ring gear to a gear casing and a clutch member is provided for directly connecting the second ring gear with the input shaft so that desired speed change stages may be obtained through selective actuation of the brake and clutch members. Another brake member may also be provided for imparting additional versatility to the system.

REFERENCES:
patent: 2078130 (1937-04-01), Edwards
patent: 2736215 (1956-02-01), Swift
patent: 3073183 (1963-01-01), Kelley
patent: 3118319 (1964-01-01), Straub
patent: 3507168 (1970-04-01), Carp
patent: RE24619 (1959-03-01), Simpson

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