Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6394777 | Cooling gas in a rotary screw type pump | — | 2002-05-28 |
| 5961295 | Mixed flow liquid ring pumps | Douglas Sweet | 1999-10-05 |
| 5653582 | Fluid bearing pad arrangement for liquid ring pump systems | Andrew C. Harvey, Richard Gerard Cadotte, Thomas R. Dardis, Ellis J. Cooper | 1997-08-05 |
| 5370502 | Liquid ring pumps with pressurized gas supported rotating liners | Kaj Holm | 1994-12-06 |
| 5295794 | Liquid ring pumps with rotating liners | — | 1994-03-22 |
| 5217352 | Two-stage liquid ring pump with rotating liner in first stage supported by liquid from second stage | — | 1993-06-08 |
| 5197863 | Bearing fluid distribution systems for liquid ring pumps with rotating lobe liners | Thomas R. Dardis, Douglas Eric Bissell | 1993-03-30 |
| 5114310 | Centrifugal pump with sealing means | Tapio Peroaho, Reijo Vesala, Vesa Vikman | 1992-05-19 |
| 5100300 | Liquid ring pumps having rotating lobe liners with end walls | — | 1992-03-31 |
| 4613283 | Liquid ring compressors | — | 1986-09-23 |
| 4422832 | Liquid ring pump with vanes in liquid ring | — | 1983-12-27 |
| 4334830 | Two-stage liquid ring pump with improved intrastage and interstage sealing means | — | 1982-06-15 |
| 4323334 | Two stage liquid ring pump | — | 1982-04-06 |