| Patents for F04D 23 - Other rotary non-positive-displacement pumps specially adapted for elastic fluids (928) |
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| 11/28/1989 | US4883406 Transport ventilator |
| 10/04/1989 | CN2045433U Mixed-flow type fan |
| 09/13/1989 | EP0332078A1 Regenerative blower |
| 07/13/1989 | WO1989006318A1 Regenerative rotodynamic machines |
| 05/23/1989 | US4832538 Feed spreader |
| 05/17/1989 | CN2037784U Positive displacement compressor for refrigeration |
| 04/25/1989 | US4824322 Peripheral toroidal blowers |
| 04/18/1989 | US4821495 Blower and discharge spout assembly |
| 04/06/1989 | DE3731902A1 Multiple-aerofoil propeller for gaseous fluids |
| 03/28/1989 | US4817111 Gas laser apparatus, method and turbine compressor therefor |
| 02/22/1989 | EP0303641A1 Transport ventilator. |
| 02/21/1989 | US4806073 Dust stripper for use in a side-channel compressor |
| 01/11/1989 | CN2030669U Fan ratory device which angular, speed and azimuth is adjustable |
| 10/19/1988 | EP0286824A1 Regenerative compressor |
| 09/28/1988 | EP0283638A1 Blower and discharge spout assembly |
| 09/22/1988 | WO1988007277A1 Gas laser apparatus, method and turbine compressor therefor |
| 08/25/1988 | WO1988006240A1 Transport ventilator |
| 07/20/1988 | CN87210054U Manual traverseing fan |
| 06/07/1988 | US4749338 Use as a combustion air blower for motor vehicle heaters |
| 04/05/1988 | US4735550 Turbo molecular pump |
| 03/22/1988 | US4732530 Turbomolecular pump |
| 02/02/1988 | US4722194 Absorptive thermodynamic apparatus and method |
| 07/01/1987 | EP0227021A1 Pneumatic conveyor provided with a blower for conveying bulk material, especially hay, straw or other agricultural goods |
| 12/17/1986 | CN85205477U Combined centrifugal-cyclonic air-pump |
| 09/03/1986 | CN85109169A Vortex and centrifugal compound air-pump |
| 08/12/1986 | US4605352 Centrifugal pump for pulverized material |
| 07/22/1986 | CA1208259A1 Centrifugal pump for pulverized material |
| 06/17/1986 | US4595338 Non-vibrational oscillating blade piezoelectric blower |
| 05/14/1986 | EP0070867B1 Side-channel pump |
| 04/15/1986 | US4582513 Centrifugal pump for the supply of finely divided solids |
| 03/04/1986 | US4573864 Regenerative turbomachine |
| 12/24/1985 | CA1198316A1 Single stage high pressure centrifugal slurry pump |
| 11/27/1985 | EP0162051A1 Non-vibrating oscillating blade piezoelectric blower |
| 07/09/1985 | CA1190173A1 Dry pulverized solid material pump |
| 05/23/1985 | WO1985002231A1 Non-vibrating oscillating blade piezoelectric blower |
| 03/27/1985 | EP0135365A2 Regenerative-compressor |
| 02/19/1985 | US4500253 Side-channel pump |
| 02/05/1985 | US4497605 Centrifugal pump for transferring solid particles from a low pressure zone into a high pressure zone |
| 11/20/1984 | US4483656 Vortex blower |
| 07/31/1984 | US4462757 Fan blade structure |
| 07/31/1984 | US4462739 Dry pulverized solid material pump |
| 06/26/1984 | US4456423 Side channel blower |
| 05/29/1984 | CA1168050A1 Centrifugal pump for feeding solid particles to a pressurized vessel and process for feeding solid fuel to a high-pressure gasification reactor |
| 05/08/1984 | US4447187 Lateral-duct fan |
| 04/24/1984 | CA1166218A1 Method and apparatus for the feeding of solid particles to a pressurized vessel |
| 04/10/1984 | US4441855 Compressors |
| 04/10/1984 | US4441337 Rotary thermodynamic apparatus and method |
| 03/27/1984 | US4439200 Single stage high pressure centrifugal slurry pump |
| 03/27/1984 | US4439095 Combustion air fan |
| 03/20/1984 | CA1163968A1 Power-driven centrifugal air blower |
| 11/22/1983 | CA1157393A1 Centrifugal pump for the supply of finely divided solids and process for the gasification of coal particles |
| 11/01/1983 | US4412781 Vortex blower |
| 11/01/1983 | US4412761 Self-regulating air inlet |
| 10/13/1983 | WO1983003366A1 Dry pulverized solid material pump |
| 09/20/1983 | CA1153874A1 Method and device for the feeding of finely divided solid matter to a gas-containing vessel |
| 08/02/1983 | CA1151074A1 Compressors |
| 07/26/1983 | CA1150570A1 Apparatus and process for the gasification of coal powder |
| 06/23/1983 | WO1983002134A1 Single stage high pressure centrifugal slurry pump |
| 04/20/1983 | EP0077039A2 Fan blade structure |
| 03/15/1983 | US4376613 Side channel compressor |
| 02/16/1983 | EP0072087A1 Improvements in or relating to peripheral toroidal blowers |
| 02/09/1983 | EP0070867A1 Side-channel pump. |
| 01/26/1983 | EP0070530A1 Side channel pump with auxiliary radial blades |
| 01/11/1983 | US4367639 Rotary thermodynamic apparatus and method |
| 12/14/1982 | US4363598 Multistage side-channel compressor |
| 12/07/1982 | US4362468 Single curvature fan wheel of a diagonal flow fan |
| 11/23/1982 | US4360306 Method and device for the feeding of finely divided solid matter to a gas-containing vessel |
| 11/09/1982 | US4358244 Single curvature fan wheel of a diagonal flow fan |
| 10/05/1982 | CA1132953A1 Regenerative rotodynamic machines |
| 08/19/1982 | WO1982002748A1 Side-channel pump |
| 07/14/1982 | EP0055825A1 Regenerative compressor |
| 06/15/1982 | US4334821 Regenerative rotodynamic machines |
| 05/26/1982 | EP0052251A1 Regenerative compressor |
| 04/20/1982 | US4325672 Regenerative turbo machine |
| 03/23/1982 | US4321006 Gas compression cycle and apparatus therefor |
| 03/09/1982 | US4318672 Particle erosion resistant covering for fan blade leading edge |
| 03/09/1982 | CA1119695A1 Control system for controlling a plant including a mobile suction device for sucking suspendible material |
| 12/22/1981 | US4306833 Regenerative rotodynamic machines |
| 11/03/1981 | CA1111773A1 Air pump with primary and secondary inlet flow channels |
| 10/28/1981 | EP0038597A1 Centrifugal pump for feeding solid particles to a pressurized vessel and process for feeding solid fuel to a high pressure gasification reactor |
| 10/27/1981 | CA1111312A1 Turbine pump |
| 09/30/1981 | EP0036714A1 Axial-flow rotary compressor |
| 07/29/1981 | EP0032601A1 Blower for pneumatic transportation |
| 07/21/1981 | US4279570 Energy transfer machine |
| 07/14/1981 | US4278365 Control system for controlling a plant including a mobile suction device for sucking suspendible material |
| 07/08/1981 | EP0031616A2 Centrifugal pump for the supply of finely divided solids and process for the gasification of coal particles |
| 07/08/1981 | EP0031608A1 A method and apparatus for the feeding of solid particles to a pressurized vessel |
| 05/27/1981 | EP0029262A1 A method and device for the feeding of finely divided solid matter to a gas-containing vessel |
| 04/14/1981 | US4261685 Energy transfer machine |
| 02/11/1981 | EP0023784A1 Power-driven centrifugal air blower |
| 02/10/1981 | CA1095596A1 High temperature magnetic refrigerator |
| 01/27/1981 | US4247246 Vortex blower |
| 01/07/1981 | EP0020585A1 A wear-resisting attachment for protection of metallic members against erosion from airborne abrasive particles, and a fan blade provided with such an attachment |
| 12/02/1980 | US4236871 Centrifugal fan impellers with blades secured between plates |
| 11/18/1980 | US4234290 Turbine pump |
| 10/14/1980 | US4227868 Single-curvature fan wheel of diagonal-flow fan |
| 09/03/1980 | EP0015037A1 Apparatus for the gasification of coal powder |
| 07/15/1980 | US4212595 Air pump with primary and secondary inlet flow channels |
| 06/11/1980 | EP0011983A1 Regenerative rotodynamic machines |
| 06/11/1980 | EP0011982A1 Regenerative rotodynamic machines |