Land vehicles – Wheeled – Occupant propelled type
Patent
1993-09-27
1995-04-11
Focarino, Margaret A.
Land vehicles
Wheeled
Occupant propelled type
474 20, 474 29, 474 37, B62M 906
Patent
active
054051584
ABSTRACT:
A drive system suitable for a bicycle and capable of providing various drive ratios comprising first and second pairs of conical members, each pair including primary and secondary conical members, both of which are rotatable about a first or second transverse axis. The conical members each comprise a series of evenly spaced sectors with the sectors of the primary conical member being slidable between the sectors of the secondary conical member in each pair. There is a first shaft for rotating the first pair of conical members. The primary conical member of the first pair is slidably mounted on the first shaft. The secondary conical member of the first pair is fixedly mounted on the first shaft . The conical members of the second pair are mounted on a second shaft. The secondary conical member of the second pair is mounted for axial sliding movement relative to the primary conical member. A continuous V-shaped drive belt extends about both pairs of conical members. A control mechanism is used to simultaneously cause relative sliding movement of both pairs of conical members whereby the annular region of engagement between the drive belt and each pair of conical members can be varied.
REFERENCES:
patent: 3837234 (1974-09-01), Chao
patent: 4116080 (1978-09-01), Berens
patent: 4119326 (1978-10-01), Porter
patent: 4398899 (1983-03-01), Wood et al.
patent: 4743041 (1988-05-01), Vazin
patent: 4781656 (1988-11-01), Brackett et al.
Stellings William
Wilding Brian
Focarino Margaret A.
Hurley Kevin
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