Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5718199 | Electronic controls for compression release engine brakes | John A. Konopka | 1998-02-17 |
| 5680841 | Internal combustion engines with combined cam and electro-hydraulic engine valve control | — | 1997-10-28 |
| 5537976 | Four-cycle internal combustion engines with two-cycle compression release braking | — | 1996-07-23 |
| 5479890 | Compression release engine brakes with electronically controlled, multi-coil hydraulic valves | John A. Konopka | 1996-01-02 |
| 5379737 | Electrically controlled timing adjustment for compression release engine brakes | — | 1995-01-10 |
| 5357926 | Compression release engine brake with selectively reduced engine exhaust noise | — | 1994-10-25 |
| 5201290 | Compression relief engine retarder clip valve | — | 1993-04-13 |
| 5165375 | Master piston for a compression release engine retarder | — | 1992-11-24 |
| 5161501 | Self-clippping slave piston | — | 1992-11-10 |