Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8202171 | Safety guard for a double universal joint | Martin Hector | 2012-06-19 |
| 7997362 | Device for coupling a universal joint shaft with a power take-off shaft of a tractor | Andreas Sarfert, Andreas Lohmuller | 2011-08-16 |
| 7220075 | Coupling device | Karl Coenen, Uwe Bürling | 2007-05-22 |
| 7144327 | Protection arrangement | Herbert Coenen, Markus Stommel | 2006-12-05 |
| 6966838 | Protection arrangement for a joint, especially a double universal joint | Herbert Coenen | 2005-11-22 |
| 6863615 | Centered double universal joint | Martin Hector | 2005-03-08 |
| 6719636 | Centered double universal joint | Martin Hector | 2004-04-13 |
| 6616536 | Centered double universal joint | Martin Hector, Eberhard Wilks | 2003-09-09 |
| 6406375 | Protective device for a drive assembly with a double universal joint | Andreas Sarfert | 2002-06-18 |
| 6354953 | Bearing ring for supporting a protective device | Horst Kretschmer, Wilhelm Schott | 2002-03-12 |
| 5800271 | Protective device for driveshafts having a removable protective cone | Horst Kretschmer | 1998-09-01 |
| 5772521 | Protective device for a driveshaft having radial supporting means for the protective cone | Horst Kretschmer | 1998-06-30 |
| 5702306 | Protective device for telescopic shafts | Wolfgang Adamek, Horst Kretschmer, Hubert G. Entrup, Clemens Nienhaus, Andreas Sarfert +2 more | 1997-12-30 |
| 5538474 | Driveshaft length adjusting mechanism with two profiles | Horst Kretschmer, Hans Langen, Clemens Nienhaus, Hubert Grosse-Entrup | 1996-07-23 |
| 5361850 | Side strut for the lower steering arm of a three-point hitch | Norbert Muller, Ju Vollmer | 1994-11-08 |
| 5076369 | Length-adjustable upper steering arm for a three-point coupling device | — | 1991-12-31 |
| 5042588 | Lifting strut for a tractor | Helmut Kamp, Hans Langen | 1991-08-27 |
| 4917406 | Length-adjustable holding device for the lower steering arm of a three-point coupling device | Alfred Frackenpohl, Hermann Rugen | 1990-04-17 |
| 4865134 | Adjustable length strut and tractor linkage | Hermann Rugen, Alfred Frackenpohl | 1989-09-12 |
| 4588323 | Coupling device | Jurgen Vollmer | 1986-05-13 |
| 4560300 | Disengageable coupling mechanism for a drive shaft assembly | Jurgen Vollmer | 1985-12-24 |
| 4540305 | Drive shaft assembly | Hubert Geisthoff, Jurgen Vollmer | 1985-09-10 |
| 4490125 | Lubricated wide angle joint | Mathias Konrad, Klaus Kampf | 1984-12-25 |
| 4468206 | Torque-limiting clutch | Mathias Konrad | 1984-08-28 |
| 4464077 | Coupling device for drive shafts | Mathias Konrad | 1984-08-07 |