Assignee
NASH ENGINEERING CO
37 granted patents·976 citations·filing 1974–2000
Top patents by PatentIndex Score
37 records- 0191US4498844ALiquid ring pump with conical or cylindrical port memberNASH ENGINEERING CO·Filed 1983·Granted Feb 12, 1985·71 cites·5 claims
- 0290US5100300ALiquid ring pumps having rotating lobe liners with end wallsNASH ENGINEERING CO·Filed 1990·Granted Mar 31, 1992·61 cites·14 claims
- 0387US5197863ABearing fluid distribution systems for liquid ring pumps with rotating lobe linersNASH ENGINEERING CO·Filed 1992·Granted Mar 30, 1993·56 cites·26 claims
- 0486US5295794ALiquid ring pumps with rotating linersNASH ENGINEERING CO·Filed 1993·Granted Mar 22, 1994·39 cites·67 claims
- 0584US4521161ANoise control for conically ported liquid ring pumpsNASH ENGINEERING CO·Filed 1983·Granted Jun 4, 1985·43 cites·7 claims
- 0683US6394777B2Cooling gas in a rotary screw type pumpNASH ENGINEERING CO·Filed 2000·Granted May 28, 2002·22 cites·17 claims
- 0782US4679987ASelf-priming liquid ring pump methods and apparatusNASH ENGINEERING CO·Filed 1986·Granted Jul 14, 1987·34 cites·14 claims
- 0881US6104987ASystem for monitoring dryer drum temperaturesNASH ENGINEERING CO·Filed 1997·Granted Aug 15, 2000·43 cites·30 claims
- 0980US5217352ATwo-stage liquid ring pump with rotating liner in first stage supported by liquid from second stageNASH ENGINEERING CO·Filed 1992·Granted Jun 8, 1993·36 cites·12 claims
- 1078US4050851ALiquid ring pumps and compressors using a ferrofluidic ring liquidNASH ENGINEERING CO·Filed 1975·Granted Sep 27, 1977·29 cites·10 claims
- 1177US4551070ANoise control for conically ported liquid ring pumpsNASH ENGINEERING CO·Filed 1984·Granted Nov 5, 1985·30 cites·5 claims
- 1276US5653582AFluid bearing pad arrangement for liquid ring pump systemsNASH ENGINEERING CO·Filed 1995·Granted Aug 5, 1997·34 cites·19 claims
- 1376US3958603AInsert for movable diaphragm type flow control valveNASH ENGINEERING CO·Filed 1974·Granted May 25, 1976·28 cites·4 claims
- 1475US5370502ALiquid ring pumps with pressurized gas supported rotating linersNASH ENGINEERING CO·Filed 1993·Granted Dec 6, 1994·27 cites·13 claims
- 1574US5507625ALiquid ring pumpsNASH ENGINEERING CO·Filed 1995·Granted Apr 16, 1996·29 cites·5 claims
- 1674US5395215ASupports for rotatable housing of liquid ring pumpsNASH ENGINEERING CO·Filed 1994·Granted Mar 7, 1995·32 cites·7 claims
- 1774US4850808ALiquid ring pump having port member with internal passageways for handling carry-over gasNASH ENGINEERING CO·Filed 1985·Granted Jul 25, 1989·28 cites·20 claims
- 1871US5147508ASuction box covers for cleaning papermaking machine feltsNASH ENGINEERING CO·Filed 1991·Granted Sep 15, 1992·33 cites·19 claims
- 1971US4315717AEvacuation system with precondenserNASH ENGINEERING CO·Filed 1979·Granted Feb 16, 1982·24 cites·10 claims
- 2069US5961295AMixed flow liquid ring pumpsNASH ENGINEERING CO·Filed 1997·Granted Oct 5, 1999·24 cites·6 claims
- 2168US6354808B1Modular liquid ring vacuum pumps and compressorsNASH ENGINEERING CO·Filed 2000·Granted Mar 12, 2002·12 cites·20 claims
- 2266US4392783ALiquid ring pump employing discharged pumping liquid for discharge port controlNASH ENGINEERING CO·Filed 1980·Granted Jul 12, 1983·23 cites·1 claims
- 2364US4359313ALiquid ring pump seal liquid chiller systemNASH ENGINEERING CO·Filed 1980·Granted Nov 16, 1982·23 cites·4 claims
- 2462US5356268ACheck valve structures for liquid ring pumpsNASH ENGINEERING CO·Filed 1993·Granted Oct 18, 1994·24 cites·20 claims
- 2562US4613283ALiquid ring compressorsNASH ENGINEERING CO·Filed 1985·Granted Sep 23, 1986·17 cites·9 claims
- 2662US4323334ATwo stage liquid ring pumpNASH ENGINEERING CO·Filed 1980·Granted Apr 6, 1982·17 cites·9 claims
- 2760US5213479ALiquid ring pumps with improved housing shapesNASH ENGINEERING CO·Filed 1992·Granted May 25, 1993·19 cites·11 claims
- 2858US4795315ATwo-stage liquid ring pumpNASH ENGINEERING CO·Filed 1988·Granted Jan 3, 1989·18 cites·3 claims
- 2958US4257747AMonitoring machinery by detecting vibrationsNASH ENGINEERING CO·Filed 1978·Granted Mar 24, 1981·12 cites·3 claims
- 3057US5427685ASeparator for separating gas from a liquidNASH ENGINEERING CO·Filed 1993·Granted Jun 27, 1995·27 cites·18 claims
- 3154US4334830ATwo-stage liquid ring pump with improved intrastage and interstage sealing meansNASH ENGINEERING CO·Filed 1980·Granted Jun 15, 1982·14 cites·9 claims
- 3248US4422832ALiquid ring pump with vanes in liquid ringNASH ENGINEERING CO·Filed 1981·Granted Dec 27, 1983·10 cites·15 claims
- 3341US5899668ATwo-stage liquid ring pumps having separate gas and liquid inlets to the second stageNASH ENGINEERING CO·Filed 1997·Granted May 4, 1999·8 cites·3 claims
- 3436US4385868ASystems for evacuating process fluids having condensable and incondensable componentsNASH ENGINEERING CO·Filed 1980·Granted May 31, 1983·6 cites·7 claims
- 3534US5131817ATwo-stage pumping systemNASH ENGINEERING CO·Filed 1990·Granted Jul 21, 1992·11 cites·24 claims
- 3633US5469705AHeat recovery in a liquid ring pump seal liquid chiller systemNASH ENGINEERING CO·Filed 1994·Granted Nov 28, 1995·12 cites·8 claims
- 3727US4228140AProduction of phosphatesNASH ENGINEERING CO·Filed 1977·Granted Oct 14, 1980·0 cites·14 claims
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