Manually operated travelling vehicle with auxiliary power
US6173801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Oct 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/1435
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A manually operated travelling vehicle with an auxiliary power device, which can detect a rotating torque applied to a rotating crank shaft (40) in non-contact manner. Supported on a body (15) is a manually operated prime mover wheel (5). A rotating coil (201) is provided coaxially on the prime mover wheel (5). A variable impedance device (202) is electrically connected to the rotating coil (201) such that impedance changes depending upon a load applied to the prime mover wheel (5). A stationary coil (101) is fixed to the body (15) to be coaxial with and spaced from the rotating coil (201) with a predetermined interval therebetween and is electromagnetically connected to the rotating coil (201). A detection circuit (109) is connected to the stationary coil (101) to detect a change in current or voltage applied to the stationary coil (101) from the rotating coil (201) in accordance with an impedance change in the variable impedance device (202). A control unit (130) controls a power source for the auxiliary power device on the basis of an output value issued from the detection circuit (109).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.