Hypocycloidal gear train for varying the speed between two...

Details Hypocycloidal gear train for varying the speed between two... Hypocycloidal gear train for varying the speed between two...

2011-06-21

2011-06-21

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Gear shiftable axially to disconnect or vary ratio

Reexamination Certificate

active

07963878

ABSTRACT:
The invention relates to a bicycle provided with a gearwheel consisting of a transmission element (3) rigidly connected to a drive shaft (1), a gear rim (4) which comprises an internal toothed gearing and in front of which all other components of a hypocycloidal gearwheel are fixed, a planetary gear (5) which is provided with several gearings and engaged with the gearing of the gear rim (4) by one of the gearings thereof, a sliding member (8) disposed between the plurality of gearwheels (6) and an output shaft (2) and displaceable in the direction thereof between a plurality of positions in each of which one of the gearwheels (6) and said output shaft (2) are rigidly interconnected.

REFERENCES:
patent: 4559848 (1985-12-01), Kerr
patent: 4721015 (1988-01-01), Hartmann
patent: 198 24 745 (1999-12-01), None
patent: 100 55 073 (2002-05-01), None
patent: 1 017 246 (1952-12-01), None
patent: 2000 316914 (2000-11-01), None
patent: 1 216 035 (1986-03-01), None

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