Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Control of differential planetary gearing
Patent
1996-10-28
1999-01-19
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Control of differential planetary gearing
475 72, 475 78, 475 94, 418 613, F16H 4704
Patent
active
058608842
ABSTRACT:
A variable speed transmission or transaxle that utilizes a pump for variable braking of the output shaft or axle. A rotatable input shaft connectable to a drive source extends into a transmission housing and is operatively connected to a gear train that transmits rotational power to a transmission output shaft. A gerotor pump mounted within the housing utilizes a ring gear of an epicyclic gear of the gear train as an inner gerotor gear that meshes with an outer gerotor gear to pump fluid along a fluid conduit. By adjustably varying the resistance of the pump, the revolution rate of the epicyclic ring gear is adjusted which in turn results in a controlling of the speed of rotation of the transmission output shaft. In an alternate embodiment, a reversible transmission is provided by employing two gerotor pumps and two gear trains which allow forward and reverse speeds of rotation of the output shaft to be variably controlled.
REFERENCES:
patent: 1161066 (1915-11-01), Minor
patent: 2133276 (1938-10-01), Ballantyne
patent: 2212046 (1940-08-01), Ross
patent: 2488408 (1949-11-01), Hollmann
patent: 2490720 (1949-12-01), Thurber
patent: 2552010 (1951-05-01), Marsell
patent: 2851908 (1958-09-01), Nakamura
patent: 2921483 (1960-01-01), Colmerauer
patent: 3404761 (1968-10-01), Jaeschke
patent: 3749217 (1973-07-01), Bush
patent: 3924490 (1975-12-01), Mills
patent: 3939735 (1976-02-01), Lewis
patent: 4012968 (1977-03-01), Kelbel
patent: 4181042 (1980-01-01), Rau
patent: 4270415 (1981-06-01), Dickinson
patent: 4334843 (1982-06-01), Hansen
patent: 4439119 (1984-03-01), Petersen
patent: 4468981 (1984-09-01), Ries
patent: 4489626 (1984-12-01), Lemon
patent: 4729261 (1988-03-01), Tervola
patent: 4932209 (1990-06-01), Okada
patent: 4979583 (1990-12-01), Thoma
patent: 5056994 (1991-10-01), Eisenmann et al.
patent: 5078549 (1992-01-01), Von Kaler
patent: 5228366 (1993-07-01), Thoma et al.
patent: 5310388 (1994-05-01), Qkcuoglu
patent: 5473964 (1995-12-01), Okada
patent: 5512021 (1996-04-01), Shash
patent: 5536215 (1996-07-01), Shaffer
patent: 5645506 (1997-07-01), Mleczko
"Gear Pumps", Pumping Manual, 7th Edition, Published 1984 by Gulf Publishing Company, Houston, Texas, pp. 124, 125 and 127.
Kwon Peter T.
Tecumseh Products Company
Wright Dirk
LandOfFree
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