| Patents for B62M 21 - Transmissions characterised by use of resilient elements therein (126) | |
|---|---|
| 10/2001 | |
| 10/25/2001 | US20010032525 Elastic bicycle crank apparatus |
| 08/2001 | |
| 08/30/2001 | US20010018379 Chain transmission assembly |
| 08/01/2001 | EP1120586A2 Chain transmission assembly |
| 06/2001 | |
| 06/12/2001 | US6244135 Bicycle drive |
| 03/2001 | |
| 03/08/2001 | DE19942413A1 Crank drive esp. for bicycles has energy accumulator to receive energy during most efficient torque generation, and return energy to crank drive during low efficiency period |
| 02/2001 | |
| 02/20/2001 | US6189639 Chain roller structure in chain driven vehicle |
| 01/2001 | |
| 01/24/2001 | CN2416280Y Mechanical energy-storing device |
| 01/03/2001 | CN2412839Y Spiral power spring boosting bicycle |
| 12/2000 | |
| 12/20/2000 | CN1277129A Vehicle transmission mechanism changing gravity into driving force |
| 07/2000 | |
| 07/12/2000 | CN2387024Y Power saving high speed bicycle structure |
| 01/2000 | |
| 01/12/2000 | CN1240742A Energy-accumulating booster for manually driven cycle |
| 12/1999 | |
| 12/22/1999 | CN1239048A Pulley-type bicycle |
| 10/1999 | |
| 10/27/1999 | CN2345446Y Automatic speed transmission |
| 09/1999 | |
| 09/15/1999 | CN2338264Y Proulsion apparatus for non-power driven vehicle |
| 09/08/1999 | CN2337068Y Spring booster for bicycle |
| 03/1999 | |
| 03/24/1999 | CN2311430Y Vibration damper bicycle |
| 04/1998 | |
| 04/08/1998 | CN2277933Y Elastic damping energy-storage booster |
| 04/01/1998 | CN2277368Y Spring energy-storage high-speed bicycle |
| 03/1998 | |
| 03/25/1998 | CN1177057A Energy accumulation stepless variable-speed device (man power vehicle) |
| 09/1997 | |
| 09/18/1997 | DE19609981A1 Inner bearing unit as torque-rpm sensor system for exercise cycle or ergometer |
| 10/1996 | |
| 10/09/1996 | CN1132708A Mechanical transmission mechanism for manpower vehicle |
| 12/1995 | |
| 12/27/1995 | CN1113868A Driving device with buffer |
| 06/1995 | |
| 06/22/1995 | DE4343311A1 Manually propelled tricycle with single front wheel |
| 03/1995 | |
| 03/02/1995 | DE4328850A1 Linear drive |
| 07/1991 | |
| 07/30/1991 | US5035678 Energy-storing bicycle sprocket drive system |
| 07/1989 | |
| 07/19/1989 | CN2041300U Labour-saving device for bicycles and tricycles |
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