Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7905467 | Dual position pilot operated valve assembly | — | 2011-03-15 |
| 7677527 | Dual position pilot operated valve assembly | — | 2010-03-16 |
| 6971625 | Pilot operated valve with variable piston orifice | Ricky J. VanSeters | 2005-12-06 |
| 5207568 | Rotary screw compressor and method for providing thrust bearing force compensation | — | 1993-05-04 |
| 4923173 | Seating seal means for disc-type valve | Earl Schumacher | 1990-05-08 |
| 4906264 | Oil separator for separating and collecting oil entrained in refrigerant | Robert J. Schintgen | 1990-03-06 |
| 4704069 | Method for operating dual slide valve rotary gas compressor | Erich J. Kocher | 1987-11-03 |
| 4610613 | Control means for gas compressor having dual slide valves | — | 1986-09-09 |
| 4571951 | Electronic control for expansion valve in refrigeration system | — | 1986-02-25 |
| 4507064 | Rotary gas compressor having rolling pistons | Erich J. Kocher, John G. Nikolaus | 1985-03-26 |
| 4419865 | Oil cooling apparatus for refrigeration screw compressor | — | 1983-12-13 |
| 4275570 | Oil cooling means for refrigeration screw compressor | Robert A. Hall | 1981-06-30 |
| 4254637 | Refrigeration system with refrigerant cooling of compressor and its oil | Paul J. Brauch | 1981-03-10 |