The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1978
Filed:
Jun. 09, 1977
Charles P Davidson, Droitwich, GB;
Edward G Philips, Colne, GB;
Lucas Industries Limited, Birmingham, GB;
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile