Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662920 | Multiple disk in oil bath clutch for a vehicle drive train, especially for a speed difference sensing clutch | Siegfried Kaltmann | 2003-12-16 |
| 6440027 | Speed difference-dependent hydraulic coupling with temperature compensation | Siegfried Kaltmann | 2002-08-27 |
| 6383109 | Drive mechanism for driving a four wheel drive vehicle with speed-difference-dependent hydraulic clutch | — | 2002-05-07 |
| 6216841 | Hydraulic clutch | — | 2001-04-17 |
| 6056097 | Viscous coupling | Rudolf Morawetz | 2000-05-02 |
| 5791446 | Viscous coupling having a toothed hub used as a carrier for the inner | Makoto Hagiwara | 1998-08-11 |
| 5662196 | Viscous coupling having a toothed hub used as carrier for the inner plates | Makoto Hagiwara | 1997-09-02 |
| 5658214 | Differential drive | Johann Hofstetter | 1997-08-19 |