Electrically assisted pedaled vehicle
US6920953B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 21, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M6/45
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved electrically assisted bicycle has rear wheel, right and left, propulsion elements, each side having a modified freewheel that carries a hand operated electromagnetic-mechanical pawl, deployed along a pedal bar by a tape connected to a pawl positioning control box lever, a freewheel wheel with radian oriented grooves in its inboard face, and the equivalent of a motor back plate on its outboard face, said grooves being compatible with a ratcheting motion by said pedal bar pawl, said back plate supporting an electric motor's field coils, current rings, and motor brushes, that collectively compliment a motor armature, commutator, and current ring brushes, where wheel ratcheting torque is applied to one side, and motor torque to the other, said bicycle also having a battery, a controlling rheostat, and a pedal actuated circuit current on/off switch, so that a rider can manually deploy ratcheting pawls to selected pedal leverage points on said wheel, while combining therewith, mixed-in applications of variable motor leverage to achieve greater vehicle efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.