Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural drive ratios other than unity
Patent
1999-02-09
2000-03-21
Lund, Scott
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural drive ratios other than unity
475298, 475289, F16H 356
Patent
active
060396717
ABSTRACT:
A multi-speed drive hub for bicycles includes a hub axle, an epicyclical gear unit, a drive-side coupling gear, an output-side coupling gear, first and second tooth systems, and a spring-loaded shift link. The epicyclical gear unit is mounted concentrically on the hub axle and has a ring gear, a planet-gear carrier, a plurality of double planet gears mounted rotatably on the planet-gear carrier, and two sun gears meshing with the double planet gears. The ring gear meshes with the double planet gears. The first tooth system connects the drive-side coupling gear to one of the ring gear and the planet-gear carrier. The second tooth system connects the output-side coupling gear to one of the planet-gear carrier and the ring gear. The shift link is mounted coaxially on and slidable axially of the hub axle, and has a plurality of axially spaced radial lugs provided thereon. The drive-side and output-side coupling gears are connected to the shift link to be displaced therewith along the hub axle. The radial lugs engage selectively the sun gears when the shift link is displaced along the hub axle.
REFERENCES:
patent: 2301852 (1942-11-01), Brown
patent: 2687050 (1954-08-01), Brown
patent: 3973451 (1976-08-01), Kine
patent: 4721013 (1988-01-01), Steuer et al.
patent: 5078664 (1992-01-01), Nagano
patent: 5445573 (1995-08-01), Nurnberger
patent: 5813937 (1998-09-01), Rickels
patent: 5855530 (1999-01-01), Huang et al.
Kun Teng Industry Co., Ltd.
Lund Scott
LandOfFree
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