Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6326710 | Electric motor | Klaus Guenther, Manfred Kirn | 2001-12-04 |
| 5496207 | Orbital disk grinder | Klaus Gu/ nther, Bernd Upphoff, Julian Pfaundler | 1996-03-05 |
| 5099184 | Electrical series motor with dynamic braking circuit | Arnim Fiebig, Manfred Kirn, Gunter Schaal | 1992-03-24 |
| 4982143 | Phase control circuit for protection of a motor against thermal overload | Martin Gerschner | 1991-01-01 |
| 4722021 | Safety circuit for hand tools, and method for safe operation thereof | Fritz Schadlich, Martin Gerschner, Klaus Gunther | 1988-01-26 |
| 4673318 | Hand tool machine, in particular drilling machine | Kurt Paule, Fritz Schadlich | 1987-06-16 |
| 4618805 | Device for regulating rotary speed of an alternating current electric motor | — | 1986-10-21 |
| 4540318 | Rotary electrical tool with speed control, especially drill | Fritz Schadlich | 1985-09-10 |
| 4502549 | Spring-coupled power screwdriver | Wolfgang Jundt, Fritz Sch/a/ dlich, Hans-Joachim Vogt, Steffen W/u/ nsch | 1985-03-05 |
| 4493377 | Electronic two-hand safety system for power tools | Klaus Gunther, Kurt Paule, Fritz Schadlich | 1985-01-15 |
| 4463293 | Method and apparatus for shutting off a power screwdriver | Wolfgang Jundt, Fritz Schadlich, Hans-Joachim Vogt, Steffen Wunsch | 1984-07-31 |
| 4392093 | Electronic control and regulating system | Kurt Paule, Fritz Schadlich, Martin Gerschner | 1983-07-05 |
| 4219747 | Mechanical apparatus for activating no load current limiting circuits in electric motors | Fritz Schadlich | 1980-08-26 |
| 4213077 | Speed control circuit for a universal electric motor | Martin Gerschner | 1980-07-15 |