| Patents for F04D 23 - Other rotary non-positive-displacement pumps specially adapted for elastic fluids (928) |
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| 06/28/1994 | US5324164 Fluid active device |
| 06/22/1994 | EP0602558A1 Apparatus for transporting a gaseous medium |
| 06/01/1994 | EP0349590B1 Gas laser apparatus and method of operating |
| 06/01/1994 | DE4239814A1 Compressor with lateral passage - has passage inlet of smaller cross=section than passage or inlet union |
| 05/26/1994 | WO1994011637A1 Compressor set |
| 04/12/1994 | US5302081 Toric pump |
| 03/22/1994 | US5295784 Suction device, especially for use in dentistry |
| 03/16/1994 | EP0586934A1 Vortex flow blower with reduced noise generation |
| 03/03/1994 | WO1994004826A1 Regenerative pump |
| 03/03/1994 | CA2142853A1 Regenerative pump |
| 03/01/1994 | US5291087 Sealed electric motor assembly |
| 01/25/1994 | US5281083 Vortex flow blower |
| 01/11/1994 | US5277232 Positive discharge contaminant evacuator |
| 01/05/1994 | EP0576449A1 Rgenerative compressor. |
| 01/05/1994 | DE4221691A1 Side channel machine for handling foodstuffs - has set of slots near hub to allow introduction of rinsing fluid |
| 12/01/1993 | EP0563293A4 Floating self-centering turbine impeller |
| 11/03/1993 | EP0568069A2 Turbomolecular vacuum pumps |
| 11/03/1993 | EP0567874A1 Flow machine for gas compression |
| 10/07/1993 | DE4244527C1 Cross current flow machine - is constructed with individual wheels in a single or double flow arrangement with housing inner part coaxial to outer part |
| 10/06/1993 | EP0563293A1 Floating self-centering turbine impeller. |
| 09/28/1993 | US5248238 Vortex pump |
| 09/22/1993 | EP0473618B1 Device for burning bio-masses and solid materials |
| 09/16/1993 | DE4207734A1 Fuel vapour return esp. for vehicle refuelling system - has vacuum source controlled w.r.t. e.g. temp. sensor outputs, collection container, vapour collector and connecting line |
| 08/10/1993 | CA1321254C Gas laser apparatus, method and turbine compressor therefor |
| 07/07/1993 | EP0537146A4 Rotary disc pump |
| 07/01/1993 | DE4244458A1 Electric pump supplying by=pass air to vehicle catalytic converters - circulates air inside motor case for cooling of motor, and has noise absorbers in air suction port |
| 05/11/1993 | US5209608 Air grain conveyor system |
| 04/27/1993 | US5205707 Ioric pump with cast impeller housing requiring three machined surfaces and one central piloting bore to control critical tolerances |
| 04/21/1993 | EP0537146A1 Rotary disc pump. |
| 04/15/1993 | WO1993007390A1 Pumps |
| 02/25/1993 | CA2076468A1 Suction device, especially for use in dentistry |
| 12/29/1992 | CA1311929C Regenerative turbomachine |
| 12/24/1992 | DE4220153A1 Centrifugal vortex blower - has housing with flow channel and intake outlet apertures with motor driven impeller to generate vortex |
| 12/23/1992 | EP0518953A1 Multiple-choke apparatus for transporting and metering particulate material |
| 12/22/1992 | US5172857 Combustion air blower for an auxiliary heater for a motor vehicle |
| 11/17/1992 | US5163810 Toric pump |
| 10/07/1992 | EP0506974A1 Impeller for vortex flow blower and method of making said impeller |
| 10/01/1992 | WO1992016752A1 Rgenerative compressor |
| 09/24/1992 | DE4108769A1 Seitenkanalverdichter Side channel blowers |
| 09/01/1992 | US5143511 Regenerative centrifugal compressor |
| 08/11/1992 | US5137418 Floating self-centering turbine impeller |
| 07/21/1992 | US5131822 Motor-driven fuel pump |
| 07/16/1992 | DE4101027A1 Impeller for lateral channel blower - has narrow tip joined to inclined section, located at rear of impeller |
| 06/22/1992 | WO1992011459A1 Floating self-centering turbine impeller |
| 04/30/1992 | WO1992007191A1 Impeller for vortex flow blower and method of making said impeller |
| 04/01/1992 | EP0478468A1 Regenerative centrifugal compressor |
| 04/01/1992 | EP0477650A2 Vortex flow blower |
| 03/10/1992 | US5094069 Gas turbine engine having a mixed flow compressor |
| 02/18/1992 | CA1295841C Blower and discharge spout assembly |
| 01/03/1992 | WO1992000440A1 Rotary disc pump |
| 12/04/1991 | EP0459269A1 Side channel compressor |
| 10/17/1991 | WO1991015680A1 Vortex-type rotor machine |
| 10/09/1991 | EP0450362A1 Toric pump |
| 09/24/1991 | US5051041 Multiple-choke apparatus for transporting and metering particulate material |
| 09/19/1991 | DE4107942A1 Sound damper for side channel blower - is for suction and pressure type blower and pivotable through 180 deg. for fixing in required position |
| 09/19/1991 | DE4107925A1 Side channel blower assembly - has cover joined to motor housing as combined assembly |
| 09/18/1991 | EP0446900A1 Mixed-flow compressor |
| 09/17/1991 | US5049770 Electric motor-driven impeller-type air pump |
| 09/11/1991 | EP0445855A1 Improved turbomolecular pump |
| 09/06/1991 | WO1991013820A1 Multiple-choke apparatus for transporting and metering particulate material |
| 09/06/1991 | CA2075808A1 Multiple-choke apparatus for transporting and metering particulate material |
| 08/13/1991 | CA2009970A1 Variable pitch fan |
| 06/18/1991 | US5024059 Electronic force ionized gas air conditioning system compressor |
| 06/06/1991 | DE3939957A1 Side channel blower system - has rotor blades, each with helical surface |
| 05/16/1991 | WO1991006748A1 Regenerative pump and method of introducing fluid thereto |
| 04/11/1991 | DE4029041A1 Heater for motor vehicle - has fan mounted on shaft of driving motor in front of burner to supply air |
| 04/10/1991 | EP0303641B1 Transport ventilator |
| 04/03/1991 | CN2074386U Diagonal-flow pipeline fan |
| 02/12/1991 | US4992022 Side channel compressor |
| 02/12/1991 | US4992021 Side channel blower |
| 01/29/1991 | US4988239 Multiple-choke apparatus for transporting and metering particulate material |
| 01/15/1991 | US4984964 Pump for refrigeration systems, in particular for aeronautical applications |
| 12/19/1990 | EP0402693A1 Gasturbine with mixed-flow compressor |
| 12/18/1990 | US4978277 Regenerative turbomachine |
| 12/10/1990 | CA2018576A1 A gas turbine power plant |
| 11/29/1990 | WO1990014558A1 Device for burning bio-masses and solid materials |
| 11/29/1990 | DE3917049A1 Vorrichtung zum verbrennen von bio- und feststoffmassen Apparatus for burning of bio- and solid masses |
| 10/16/1990 | US4963065 Centrifugal pump for pulverized material |
| 09/26/1990 | EP0389409A2 Oil or gas burner |
| 09/05/1990 | EP0384935A1 Regenerative blower |
| 08/22/1990 | EP0383694A1 Suction pump |
| 08/22/1990 | EP0383238A2 Vortex flow blower and method of manufacturing the same |
| 08/14/1990 | US4948344 Controlled vortex regenerative pump |
| 08/14/1990 | US4948334 Displacement type rotary induction-blower machine |
| 07/24/1990 | US4943208 Multi-stage lateral channel compressor |
| 07/10/1990 | US4940385 Rotary disc pump |
| 06/20/1990 | CN1008468B Vortex and centrifugal compound air-pump |
| 06/13/1990 | EP0372104A1 Side channel compressor |
| 06/12/1990 | US4932834 Ring channel blower |
| 06/12/1990 | US4932833 For combustion air conveyance in heaters |
| 05/08/1990 | US4923364 Gas laser apparatus, method and turbine compressor therefor |
| 03/13/1990 | US4907945 Side-channel compressor |
| 01/31/1990 | EP0353002A2 A regenerative turbomachine |
| 01/18/1990 | DE3823514A1 Side-channel machine |
| 01/17/1990 | EP0351372A2 A displacement type rotary induction-blower machine |
| 01/16/1990 | US4893990 Mixed flow impeller |
| 12/20/1989 | EP0346720A2 Pump for refrigerating systems, in particular for aeronautical applications |
| 12/20/1989 | EP0346456A1 Regenerative rotodynamic machines |
| 12/06/1989 | EP0344517A1 Side channel compressor |
| 12/06/1989 | EP0344516A1 Multi-stage side channel compressor |