Motor vehicles – Special wheel base – Rider propulsion with additional source of power – e.g.,...
Patent
1996-07-22
1998-11-03
Boehler, Anne Marie
Motor vehicles
Special wheel base
Rider propulsion with additional source of power, e.g.,...
180207, 180220, B62K 1100, B62M 2302
Patent
active
058295461
ABSTRACT:
An electrical drive is provided for a bicycle including a crank axle having a first end portion and a second end portion. The electrical drive includes a housing mounted around the crank axle and having a first end portion and a second end portion located adjacent to the first and second end portions of the crank axle respectively. A drive shaft is mounted around the crank axle. A single direction bearing is fitted around the drive shaft. A torsional ring is mounted on the single direction bearing. A torsional rod is movably mounted around the second end portion of the crank axle and driven by the crank axle and is movably mounted in the torsional ring. A sensing race is fixedly mounted around the torsional rod. A sensing unit is mounted on the second end portion of the housing and is located adjacent to the sensing race for sensing a rotational velocity of the crank axle and a torsion exerted on the crank axle by means of the sensing race.
REFERENCES:
patent: 4026375 (1977-05-01), Miura
patent: 5024286 (1991-06-01), Lean et al.
patent: 5076386 (1991-12-01), Ferneding
patent: 5474148 (1995-12-01), Takata
Boehler Anne Marie
Merida Industry Co., Ltd.
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