Electricity: motive power systems – With particular motor-driven load device – Plural – diverse or diversely controlled load device
Patent
1994-01-18
1996-02-13
Sircus, Brian
Electricity: motive power systems
With particular motor-driven load device
Plural, diverse or diversely controlled load device
318 45, 180221, B62D 300
Patent
active
054913900
ABSTRACT:
An electric propulsion system for a bicycle includes one or two electric motors secured to a mounting assembly attached to the bicycle, a drive roller that impinges on the front wheel of the bike, a battery pack secured to the frame of the bicycle, and a motor controller device operated by the bicycle rider. The mounting assembly is secured to the bicycle steerer tube and includes a laterally extending pivot shaft that is generally parallel to the axle of the adjacent front wheel. A pair of pivot arms are secured to opposed ends of the pivot shaft. A pair of electric motors are disposed face-to-face with their shafts in coaxial alignment and joined by a drive roller. Lower ends of the pivot arms are secured to respective electric motors. A main brace extends between the motors and includes an upper end adjustably secured to the pivot arms, and the lower end is also joined the electric motors. A spring is interposed between the pivot shaft and its support to impart a restoring force and damping effect to the pivot arms and the motors. Frictional engagement of the drive roller on the front tire is automatically increased by torque generated by the drive roller engaging the front wheel. A battery pack is secured to the front crossbar of the bicycle, and is connected through switches and a control system to the motors. The motors may be connected to the battery in series or parallel, or one at a time, and a timer in the control circuit switches from one motor to the other to prevent motor overheating. A three position selector switch is provided on the handlebar to control the relays and select the power output combination of the motors, and a momentary contact power switch is also secured to the handlebar to permit the rider to actuate the motors.
REFERENCES:
patent: 3431994 (1969-03-01), Wood, Jr.
patent: 3841428 (1974-10-01), Bialek
patent: 3938013 (1976-02-01), Seilly et al.
patent: 3961678 (1976-06-01), Hirano et al.
patent: 3978936 (1976-09-01), Schwartz
patent: 4549119 (1985-10-01), Slagle
patent: 4579188 (1986-04-01), Facer
patent: 5078227 (1992-01-01), Becker
patent: 5316101 (1994-05-01), Gannon
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