| Patents for B62M 13 - Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel (229) |
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| 08/30/1994 | US5342075 Variable speed drive for a bicycle |
| 07/20/1994 | CN2172254Y Bicycle, motorcycle transmission gearing |
| 06/09/1994 | DE4240439A1 Scooter with clutch pedal coupling rear wheel to auxiliary electric drive motor - has free-wheeling before or after engagement of drive by friction roller from electric motor or small petrol engine. |
| 02/10/1994 | DE4225694A1 Electrical flywheel drive for bicycle with aluminium@ or plastics material flywheel disc - located horizontally and driven by electric motor and having spaced radial cavities vertical to its centre to house heavy metal balls |
| 12/23/1993 | DE4219763A1 Electric drive unit for bicycle - uses friction rollers co-acting with bicycle wheel, and rotated in opposite directions by electric motor |
| 08/11/1993 | CN2139923Y Labour saver for bicycle |
| 08/11/1992 | US5136892 Variable speed shaft drive mechanism for bicycles |
| 10/01/1991 | US5052705 Controlled rotary power transfer apparatus and method for non-driven bicycle wheels and the like |
| 12/04/1990 | US4974695 Reverse drive mechanism for a motorcycle |
| 09/06/1989 | CN2043966U Energy saving electric bicycle |
| 08/09/1989 | CN2042528U Centrifugal roller of speed-changing device |
| 08/12/1987 | EP0231235A1 Electric traction device for bicycle, comprised of two electric motors with permanent magnets mounted in opposition and driving a single central roller |
| 01/29/1987 | WO1987000500A1 Electric traction device for bicycle, comprised of two electric motors with permanent magnets mounted in opposition and driving a single central roller |
| 12/03/1986 | CN85108428A Apparatus for powering a bicycile |
| 08/05/1986 | US4603754 Drive system for engine-driven light vehicles |
| 07/15/1986 | US4600164 Safety seat belt system and latch release mechanism used therein |
| 04/01/1986 | US4579188 Multi-speed transmission for friction driven cycles |
| 02/05/1986 | EP0169857A1 Friction roller drive for wheel, particularly bicycles |
| 09/18/1985 | EP0155185A2 Electrically assisted cycle |
| 08/01/1985 | WO1985003266A1 Friction roller drive for wheel, particularly bicycles |
| 06/19/1985 | EP0145431A2 Vehicle drive |
| 12/06/1983 | US4418784 Bicycle transmission assembly |
| 06/07/1983 | US4386675 Self-engaging drive for wheeled vehicles |
| 01/12/1982 | CA1116095A1 Interlocking safety handle for a friction drive apparatus |
| 04/01/1981 | EP0025960A2 Scooter |
| 09/18/1979 | US4167984 Interlocking safety handle for a friction drive apparatus |
| 03/28/1978 | US4081048 Automatic torque sensor |
| 02/24/1976 | US3939931 Electric starter drive for motor engaging vehicle drive wheel |
| 01/27/1976 | US3934481 Automatic friction drive transmission |