Bicycle power assist

Details Bicycle power assist Bicycle power assist

1997-01-17

1998-09-01

Hurley, Kevin

Motor vehicles

Special wheel base

Having only two wheels

180206, B62M 2302

Patent

active

057997470

ABSTRACT:
To encourage the use of bicycles for both recreation and transportation by reducing the normally excessive load on the cyclist during hill climbing. A simple on/off push button controls the power assist while a clutch automatically handles both engagement and disengagement. The invention enables a powerful (80 to 150 watts of power delivered to the bicycle tire), compact, lightweight (2.5 to 4 kg) system capable of boosting a cyclist during the hills of a 1 to 2 hour bicycle ride. The system is compatible with most bicycles, is easy to install yet includes a theft deterrent mount. The system includes several safety features including a very modest high speed limit (e.g. 12 mph) beyond which power assist is automatically disabled, and a modest power level which can be overridden by normal bicycle brakes.

REFERENCES:
patent: 3773131 (1973-11-01), Jaulmes
patent: 3961678 (1976-06-01), Hirano et al.
patent: 3991843 (1976-11-01), Davidson
patent: 4044851 (1977-08-01), Shaw et al.
patent: 4113043 (1978-09-01), Palmer
patent: 4122907 (1978-10-01), Davidson et al.
patent: 4386675 (1983-06-01), Landon
patent: 5316101 (1994-05-01), Gannon

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