Torque limiting device for an electric motor
US7235940B2 · kind B2 · utility
72Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Sep 3, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary speed limiting device for an electric motor has a current detecting device for detecting a motor current of the electric motor, a nominal value setting for adjusting a torque, a control and/or regulating device which limits the motor current to a maximum value depending on the nominal value setting, a rotary speed detecting device for detecting a rotary speed of the electric motor, the control and/or regulating device determining a maximum value of the motor current depending on the rotary speed determined by the rotary speed detecting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.