Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6918479 | Diaphragm spring for a friction clutch | Martin Pahrisch, Ronald Beck, Erwin Ziegler, Frank Hirschmann | 2005-07-19 |
| 6877596 | Diaphragm spring for a friction clutch | Martin Pahrisch, Ronald Beck, Erwin Ziegler, Frank Hirschmann | 2005-04-12 |
| 6564920 | Driver disk for a clutch plate | Karl Hormann, Andreas Dorsch, Carmen Schleicher, Klaus Steinel, Norbert Lohaus | 2003-05-20 |
| 6165074 | Torsional vibration damper | Helmuth Weissenberger, Karl Hubert, Richard Knoblach | 2000-12-26 |
| 6095308 | Clutch plate for motor vehicle clutches | Richard Knoblach, Helmuth Weissenberger | 2000-08-01 |
| 5419422 | Driver plate for a clutch plate of a motor vehicle friction clutch | — | 1995-05-30 |
| 4941558 | Clutch disc | — | 1990-07-17 |
| 4810231 | Torsional vibration damper having springs with progressive characteristics | Helmuth Weissenberger | 1989-03-07 |
| 4782718 | Fly-wheel unit for an internal-combustion engine | Franz Hartig, Friedrich Kittel, Manfred Caspar, Bernhard Schierling, Norbert Pieper +2 more | 1988-11-08 |
| 4751990 | Multi-disc clutch unit, particularly for heavy-duty motor vehicles | Peter Janda, Nikolaus D. Mackert, Dieter Howorka, Werner Fricke, Winfried Sturmer +1 more | 1988-06-21 |
| 4727971 | Pressure plate unit for a friction clutch | Peter Janda, Gunther Rostin | 1988-03-01 |
| 4651857 | Clutch disk unit for a motor vehicle clutch | Helmuth Weissenberger | 1987-03-24 |
| 4591040 | Clutch disc for a motor vehicle friction clutch | Helmuth Weissenberger | 1986-05-27 |