Automatic anti-trap device
US7394216B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Jul 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic anti-trap device is provided to add safety to other apparatuses. The automatic anti-trap device of this invention has a driving circuit to control a motor, a current sensor to generate a current signal, a current ripple peak value circuit to generate a current ripple peak value signal according to the current signal, and a micro processor to generate a working signal for the driving circuit to control the motor according to a keystroke signal, the current signal and the current ripple peak value signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.