Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6279340 | Oil-free liquid chiller | Arthur L. Butterworth, Todd R. Vandeleest, David H. Eber | 2001-08-28 |
| 6250101 | Oil and refrigerant pump for centrifugal chiller | — | 2001-06-26 |
| 6250102 | Oil and refrigerant pump for centrifugal chiller | — | 2001-06-26 |
| 6176092 | Oil-free liquid chiller | Arthur L. Butterworth, Todd R. Vandeleest, David H. Eber | 2001-01-23 |
| 6098422 | Oil and refrigerant pump for centrifugal chiller | — | 2000-08-08 |
| 6065297 | Liquid chiller with enhanced motor cooling and lubrication | Dennis R. Dorman | 2000-05-23 |
| 5848538 | Oil and refrigerant pump for centrifugal chiller | — | 1998-12-15 |
| 5083745 | Incremental electrically actuated valve | — | 1992-01-28 |
| 4986085 | Incremental electrically actuated valve | — | 1991-01-22 |
| 4900108 | Self-fixturing cabinet corner member | — | 1990-02-13 |
| 4762469 | Rotor anti-reverse rotation arrangement in a screw compressor | — | 1988-08-09 |
| 4741674 | Manifold arrangement for isolating a non-operating compressor | — | 1988-05-03 |
| 4662190 | Integral slide valve-oil separator apparatus in a screw compressor | — | 1987-05-05 |
| 4662819 | Centrifugal fan with variable blade pitch | Rodney L. Lakowske, David H. Eber | 1987-05-05 |
| 4622048 | Liquid-gas separator | John H. Roberts | 1986-11-11 |
| 4573324 | Compressor motor housing as an economizer and motor cooler in a refrigeration system | James W. Larson | 1986-03-04 |
| 4522575 | Scroll machine using discharge pressure for axial sealing | Robert E. Utter | 1985-06-11 |
| 4488855 | Main bearing lubrication system for scroll machine | Arthur L. Butterworth, Robert E. Utter | 1984-12-18 |