Machine element or mechanism – Elements – Gear casings
Patent
1979-11-19
1982-12-14
Braun, Leslie
Machine element or mechanism
Elements
Gear casings
74677, 74789, 74740, F16H 4704, F16H 344
Patent
active
043632475
ABSTRACT:
A power transmission having a single Ravigneau-type planetary assembly, having a single carrier with two sets of planet gears, two sun gears, and one ring gear. A first sun gear is connected by a first set of planet gears to the ring gear; the ring gear itself is directly and rigidly connected to an output shaft. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the first sun gear. The speed varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the first sun gear. The input shaft is also connectable by a first clutch to the carrier and by a second clutch to the second sun gear. A brake grounds the carrier in the first range and in reverse and causes drive to be delivered to the output through the ring gear in a hydrostatic mode.
REFERENCES:
patent: 2884809 (1959-05-01), Moore
patent: 2889715 (1959-06-01), De Lorean
patent: 3314307 (1967-04-01), Egbert
patent: 3772939 (1973-11-01), Hause
patent: 4134311 (1979-01-01), Orshansky, Jr. et al.
patent: 4168637 (1979-09-01), Orshansky, Jr. et al.
patent: 4196644 (1980-04-01), Orshansky, Jr. et al.
patent: 4261226 (1981-04-01), Orshansky, Jr. et al.
Braun Leslie
Gotts Lawrence J.
Orshansky Transmission Corporation
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