Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5345774 | Method and apparatus for zero emissions testing of a refrigerant in a closed system | — | 1994-09-13 |
| 5187953 | Fail-safe apparatus for purge system | — | 1993-02-23 |
| 4984431 | High efficiency purge system | James N. Cuny | 1991-01-15 |
| 4844690 | Diffuser vane seal for a centrifugal compressor | William S. DeLaurier, Howard W. Kirtland | 1989-07-04 |
| 4538422 | Method and control system for limiting compressor capacity in a refrigeration system upon a recycle start | William J. Lavigne, Jr. | 1985-09-03 |
| 4535607 | Method and control system for limiting the load placed on a refrigeration system upon a recycle start | — | 1985-08-20 |
| 4535598 | Method and control system for verifying sensor operation in a refrigeration system | — | 1985-08-20 |
| 4514989 | Method and control system for protecting an electric motor driven compressor in a refrigeration system | — | 1985-05-07 |
| 4503684 | Control apparatus for centrifugal compressor | Phiroze Bandukwalla, Jarso Mulugeta | 1985-03-12 |
| 4404811 | Method of preventing refrigeration compressor lubrication pump cavitation | Benjamin F. Hesler | 1983-09-20 |
| 4381650 | Electronic control system for regulating startup operation of a compressor in a refrigeration system | — | 1983-05-03 |
| 4375939 | Capacity-prewhirl control mechanism | Edward A. Huenniger, Jarso Mulugeta | 1983-03-08 |
| 4257733 | Diffuser control | Phiroze Bandukwalla, Howard W. Kirtland | 1981-03-24 |
| 4237698 | Motor cooling system for refrigeration machine | — | 1980-12-09 |
| 4219305 | Diffuser control | Howard W. Kirtland | 1980-08-26 |