Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1979-09-17
1981-11-10
Krizmanich, George H.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
192 17R, F16H 5710
Patent
active
042991412
ABSTRACT:
A mechanical transmission having reduced friction direct drive. An input shaft from a flywheel is drivingly connected to a clutch cover and a tubular shaft. The tubular shaft is connected to a sun gear which engages a pair of planetary gears. The planetary gears are connected to an output drive shaft mounted within and coaxial with the flywheel driven tubular shaft by means of a pair of support arms. The other end of the output shaft is connected to a clutch plate mounted adjacent to the flywheel within the clutch housing. A ring gear, mounted within a gear cover, engages the planetary gears. The gear housing is mounted for rotation around both the tubular and output drive shafts. A band brake surrounds the outside of the gear housing. In reduced ratio drive the clutch is disengaged from the flywheel and the band is clamped to the gear housing so that the ring gear is fixed. The output shaft is driven by the planetary gears, which in turn are driven by the rotation of the sun gear connected through the tubular shaft to the flywheel, causing a reduced ratio output. In direct drive or high gear, the clutch is engaged causing rotation of the output shaft with the flywheel, and the band brake is released allowing the ring gear and gear housing to rotate freely at the same speed as the sun and planetary gears. The output drive shaft is thus directly driven by the flywheel while the gear housing and associated gears rotate freely at the output shaft speed resulting in reduced friction in the gear train.
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patent: 2308082 (1943-01-01), Johnson
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patent: 3589485 (1971-06-01), Kajitani
patent: 3664471 (1972-05-01), Seidlitz
patent: 3702127 (1972-11-01), Yokoyama
patent: 4071271 (1978-01-01), Bourrie
patent: 4185520 (1980-01-01), Henneman et al.
Krizmanich George H.
Stokes William D.
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