Machine element or mechanism – Elements – Gear casings
Patent
1979-04-13
1981-04-14
Braun, Leslie
Machine element or mechanism
Elements
Gear casings
74730, 74789, 74791, F16H 4704, F16H 4700, F16H 344
Patent
active
042612268
ABSTRACT:
A power transmission having two planetary assemblies, each having at least one carrier with planet gears, at least one sun gear, and at least one ring gear. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the sun gear or gears of the first planetary assembly. 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 sun gear. The input shaft is also connected directly to a sun gear of the second planetary assembly and is further connectable by a clutch to a carrier of the first planetary assembly. Another clutch enables connecting the carrier of the first planetary assembly to a ring gear of the second planetary assembly. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output through a ring gear of the first planetary assembly in a hydrostatic mode. The carrier of the second planetary assembly is connected in rigid driving relationship to that first ring gear, and in all ranges these two elements transmit the drive to the output shaft.
REFERENCES:
patent: Re27307 (1972-03-01), De Lalio
patent: 2316390 (1943-04-01), Biermann
patent: 3496801 (1970-02-01), Smith
patent: 3777593 (1973-12-01), Mooney et al.
patent: 3969957 (1976-07-01), De Lalio
patent: 4114475 (1978-09-01), Orshansky, Jr. et al.
patent: 4116089 (1978-09-01), Orshansky, Jr. et al.
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.
Orshansky, Jr. deceased Elias
Weseloh William E.
Braun Leslie
Orshansky Transmission Corporation
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