Power assisted manually powered vehicle

Details Power assisted manually powered vehicle Power assisted manually powered vehicle

1996-03-04

1999-03-09

DePumpo, Daniel G.

Motor vehicles

Special wheel base

Rider propulsion with additional source of power, e.g.,...

180205, 318139, B62K 1100

Patent

active

058788310

ABSTRACT:
A number of embodiments of an electrically assisted manually powered bicycle that utilizes a control means whereby the operation of the electric power assist is curtailed when the battery voltage drops below a lower threshold value. Means are also provided to gradually reduce the electrical power assist prior to this so as to more smoothly transition to a nonpower assisted operation.

REFERENCES:
patent: 3904947 (1975-09-01), Crews
patent: 5024286 (1991-06-01), Lean et al.
patent: 5367455 (1994-11-01), Kitagawa et al.
patent: 5370200 (1994-12-01), Takata
patent: 5627752 (1997-05-01), Buck et al.
patent: 5662187 (1997-09-01), McGovern

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