Title: Electrically assisted cycles

Abstract: An electrically assisted cycle, particularly but not exclusively a pedal bicycle or tricycle, wherein there is provided an electric motor which can assist the rider in propelling the cycle, the frame of the cycle supporting batteries for powering the motor. In order that the rider can only obtain electrical assistance there is provided a sensing arrangement for sensing the speed at which the chain wheel of the pedal assembly of the cycle is being rotated. The sensing means controls operation of an electrical switch in turn controlling energization of the motor. Thus, in order for the motor to be energized the rider must be rotating the pedals at a speed in excess of a predetermined speed.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Davidson, Charles P. D. (Droitwich, GB)
Philips, Edward G. (Colne, GB)

Application Number: 805131
Filing Date: 1977-06-09
Publication_date: 1978-10-31
Assignee: Lucas Industries Limited (Birmingham, GB2)
Primary Class(es): 180/206 280/214
Other Classes:
US Patent Ref:

3773131	Nov, 1973	Jaulmes	180/33.
3884317	May, 1975	Kinzel	180/34.
3991843	Nov, 1976	Davidson	180/33.

Other Refs: 443,948

Feb, 1968	CH

Primary Examiner: Peters, Jr., Joseph F.
Assistant Examiner: McGiehan, Donn
Attorney: Holman & Stern