Electric tool with ducted cooled control electronics
US6123158A · kind A · utility
68Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1999 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Jan 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a hand-held electric tool driven by an electric motor (2) and capable of being connected to a single-phase alternating current (4a), the electric motor (2) has no collector or slip ring, and its driving energy is supplied by control electronics (5) which are powered at their input by the single-phase alternating current (4a) and which supply at their output the type of current (4b) suitable for the motor. The control electronics (5) are arranged in a handle (1a) of the electric tool and are cooled by the cooling air flow (7) which also cools the motor (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.