Power assisted bicycle

Details Power assisted bicycle Power assisted bicycle

2007-08-28

2007-08-28

Hurley, Kevin (Department: 3611)

Motor vehicles

Special wheel base

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

C180S220000

Reexamination Certificate

active

11146982

ABSTRACT:
A power assisted bicycle (10) which modifies an existing manually powered bicycle (12) by replacing the left pedal crank arm with a motor-driven sprocket and left pedal assembly (32). An electric motor (34) is attached to the bicycle's frame (20) and has attached a motor drive sprocket (35) and a one-way clutch (36). A motor roller chain ring (38) is connected in concert to the motor drive sprocket (35) and motor driven sprocket (32), such that the electric motor (34), provides a power assist to the manually powered bicycle, with the one-way clutch (36) permitting unassisted pedaling without resistance of the motor when de-energized. An electrical power source (40) interfaces with an electrical control system (42) for supplying electrical energy to operate and control the electric motor.

REFERENCES:
patent: 713467 (1902-11-01), Macdonald
patent: 1097546 (1914-05-01), Harley
patent: 5242028 (1993-09-01), Murphy et al.
patent: 6412800 (2002-07-01), Tommei
patent: 2003/0141126 (2003-07-01), Hays et al.
patent: 2003/0159869 (2003-08-01), Trerice
patent: 2005/0039963 (2005-02-01), Forderhase
patent: 2005/0077096 (2005-04-01), Kokatsu et al.
patent: 2005/0241869 (2005-11-01), Phillips et al.

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