Electric motor-assisted vehicle
US6672418B1 · kind B1 · utility
162Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62M11/145
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A simplified and low cost torque sensor for a motor assisted manually operated vehicle. The torque sensor is operated by a differential transmission that transmits no driving force for the vehicle. Thus it can be constructed from low cost light weight materials such as aluminum or plastics. This also provides more latitude in the placement of the sensor. A variety of possible differential transmissions are disclosed utilizing either one or two coupled planetary transmissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.