Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052987 | Stepless hydrostatic-mechanical transmission | Hans Drewitz | 1991-10-01 |
| 4976664 | Vehicle drive transmission having a high power ratio | Hans Drewitz | 1990-12-11 |
| 4976665 | Vehicle drive device with a hydrostatic-mechanical power splitting transmission | Helmut Flenker | 1990-12-11 |
| 4959962 | Starter system for automatically turning off and restarting a motor vehicle engine | Hans Drewitz | 1990-10-02 |
| 4897996 | Low-loss cyclically-operating pressure-responsive bypass valve for fixed displacement pump flow control | Stefan Martini | 1990-02-06 |
| 4875557 | Brake play resetting device | Hans Drewitz, Manfred Krenner | 1989-10-24 |
| 4843907 | Hydromechanical power splitting transmission for vehicles | Hans Drewitz | 1989-07-04 |
| 4825722 | Hydromechanical transmission for motor vehicles | Hans Drewitz, Stefan Martini | 1989-05-02 |
| 4817987 | Structural element for supporting the chassis or superstructure of a motor vehicle on a wheel | Gerd Ruhmann | 1989-04-04 |
| 4796488 | Differential whose a ring gear is mounted in sound damping manner on its carrier | Franz Seethaler, Robert F. Zelinka, Manfred Stiglmaier | 1989-01-10 |
| 4778020 | Utility vehicle designed for frequent starting and stopping | Hans Drewitz | 1988-10-18 |
| 4762191 | Articulated vehicle selectively driven at two axles from two power sources | Hans Drewitz | 1988-08-09 |
| 4745745 | Energy storage device | — | 1988-05-24 |
| 4731997 | Device for storing and releasing energy | — | 1988-03-22 |
| 4716730 | Hydrostatic drive | Stefan Martini, Hans Drewitz | 1988-01-05 |
| 4647084 | Pipe connection | Stefan Martini, Hans Drewitz | 1987-03-03 |
| 4469187 | Articulated bus | Hans Drewitz | 1984-09-04 |
| 4446756 | Power divider gearbox with a planetary differential gear drive | Hans Drewitz | 1984-05-08 |
| 4421339 | Articulated vehicle, particularly a bus | — | 1983-12-20 |
| 4342370 | Articulated omnibus | Hans Drewitz | 1982-08-03 |
| 4313351 | Multiple-power gear drive transmission and drive assembly including such transmission, and brake energy accumulator | — | 1982-02-02 |
| 4283966 | Omnibus having a flywheel energy accumulator | — | 1981-08-18 |
| 4216684 | Hybrid drive for motor vehicles | Hans Hagen, Hans Drewitz, Erich Knirsch, Paul Merker | 1980-08-12 |