Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04D - Non-positive-displacement pumps › F04D 19 - Axial-flow pumps specially adapted for elastic fluids
Patents for F04D 19 - Axial-flow pumps specially adapted for elastic fluids (3,780)
11/1989
11/08/1989EP0340685A2 Composite vacuum pump
11/08/1989CN2047316U Wind-puffing device of ceiling fan
11/07/1989US4878813 Vacuum pump
10/1989
10/05/1989WO1989009341A1 Turbomolecular vacuum pump
09/1989
09/20/1989EP0333200A1 Turbo-molecular pump
09/13/1989EP0332107A1 Turbomolecular pump and method of operating the same
09/08/1989WO1989008192A1 Turbomolecular vacuum pump
07/1989
07/13/1989WO1989006320A1 Molecular vacuum pump
07/13/1989WO1989006319A1 Molecular vacuum pump
07/11/1989US4846261 Vacuum heat exchange apparatus for ventilation of buildings, in particularly of animal sheds
07/05/1989CN2040555U Adjustable wide-angle fan
06/1989
06/21/1989EP0320926A1 Fan
05/1989
05/30/1989US4835114 Method for LPCVD of semiconductors using oil free vacuum pumps
05/23/1989US4832564 Pumps
05/10/1989CN2037405U Special purpose combined axial fan for small mine
05/02/1989US4826394 Vacuum pump
05/02/1989US4826393 Turbo-molecular pump
04/1989
04/26/1989CN2036591U Impeller structure
04/26/1989CN1032574A Runoff type molecule pump
02/1989
02/28/1989US4808067 Rotary vacuum pump
02/22/1989EP0303917A1 Fluid apparatus
02/21/1989US4806075 Turbomolecular pump with improved bearing assembly
02/21/1989US4806074 High-vacuum pump having a bell-shaped rotor
02/16/1989DE3826710A1 Vacuum pump
02/16/1989DE3725164A1 Molecular pump
01/1989
01/18/1989EP0299458A2 Apparatus for treatment of a process gas
01/11/1989EP0298437A2 Ventilator for the circulation of large gas quantities for a high power laser of the gas circulation type
01/10/1989US4797068 Vacuum evacuation system
01/10/1989US4797062 Device for moving gas at subatmospheric pressure
12/1988
12/21/1988CN87103994A Disk shaped turbine compounded molecular pump
12/21/1988CN87103982A Disk turbine molecular pump
12/14/1988CN87215518U Portion structure of main compressor with whole shell body and single spiral rod
11/1988
11/29/1988US4787829 Turbomolecular pump
10/1988
10/26/1988CN87214492U Draft fan for a annular kiln
10/26/1988CN87214439U Opposite-rotating axial blower
10/11/1988CA1242943A1 Heating apparatus having multi-stage fans
09/1988
09/28/1988EP0283736A2 High vacuum pump with a bell-shaped rotor
09/21/1988EP0283287A2 Pump
09/14/1988CN85105304B Large flow-quantity multistep disc-type molecular pump
09/13/1988US4770574 Discs with blades
09/07/1988EP0280984A1 Rotary vacuum pump
09/06/1988US4768921 Turbomolecular vacuum pump
08/1988
08/31/1988CN88100310A Vacuum distributor
08/30/1988US4767265 Turbomolecular pump with improved bearing assembly
08/09/1988CA1240302A1 Turbomolecular pump with improved bearing system
08/02/1988CA1239912A1 High-vacuum molecular pump
06/1988
06/29/1988CN87213715U Guiding wind plate pendulum angle-adjustable fan
06/14/1988CA1238028A1 Ceiling fan
05/1988
05/24/1988US4746265 High-vacuum molecular pump
05/11/1988CN87203257U Perfermance changeable axial-flow master-ventilator for mine
04/1988
04/13/1988CN87203256U Axial-flow fan of mine
04/05/1988US4735550 Turbo molecular pump
03/1988
03/29/1988US4734018 Vacuum pump with plural labyrinth seal portions
03/29/1988US4734015 Axial-flow fan
03/23/1988EP0260733A1 High-vacuum pump
03/23/1988CN87200061U Low noise local ventilator
03/22/1988US4732530 Turbomolecular pump
03/22/1988US4732529 Turbomolecular pump
03/15/1988US4730980 Air supply system
03/08/1988US4729714 Built-in fan
02/1988
02/24/1988EP0256739A1 Turbo-molecular pump
02/24/1988EP0256234A2 Vacuum generating system
02/10/1988CN86207338U Axial-flow ventilator
01/1988
01/13/1988EP0172900B1 Plant for the transport and/or mixture of gas
01/05/1988US4717315 Small size axial-flow molecular pump using a magnetic bearing
11/1987
11/26/1987DE3716221A1 Turbomolecular pump
11/24/1987US4708586 Thread groove type vacuum pump
11/19/1987EP0245843A2 Device for helium leak indicator
10/1987
10/22/1987DE3612167A1 Fan arrangement, especially for the cooling of water-cooled internal combustion engines
10/15/1987DE3612249A1 Fan
10/03/1987CN86209248U Multifunctional miniature electric fan
10/01/1987DE3708663A1 Turbomolecular pump
09/1987
09/22/1987US4695223 Turbomolecular vacuum pump with a rotor and at least one antifriction bearing
08/1987
08/04/1987US4684317 High-vacuum molecular pump
07/1987
07/29/1987CN86204573U 防爆壁扇 Explosion Bishan
07/08/1987EP0228040A1 Vacuum pump
07/07/1987US4678400 Rotary means for use as a heat source
06/1987
06/24/1987EP0226039A1 Vacuum pump apparatus
06/23/1987US4674952 Turbo molecular pump with improved bearing assembly
05/1987
05/26/1987US4668160 Vacuum pump
05/06/1987EP0220581A1 Vacuum pump with casing and rotor
04/1987
04/29/1987CN86206411U Hermetically sealed primary synchronous regulating mechanism
04/07/1987US4655800 Adsorption of chlorine containing gases
04/07/1987US4655678 Combined turbo-molecular pump
03/1987
03/25/1987CN85101627A Turbomolecular pump
03/10/1987US4648787 Apparatus for transporting and/or mixing gases
03/04/1987CN86201299U Dual rotary single direction axial-flow fan
02/1987
02/24/1987US4645413 Friction pump
02/03/1987US4641002 Titanium and zirconium nitride
01/1987
01/13/1987US4636669 Termination assembly for electric fans
01/13/1987CA1216477A1 Rotor device
12/1986
12/31/1986CN85105153A Reformation of axial-flow fan for mine
11/1986
11/12/1986CN86200793U Meridian speeding-up axial flow type ventilator for some areas
10/1986
10/15/1986EP0197238A2 Housing for a turbo-molecular vacuum pump
10/08/1986EP0196352A1 Turbomolecular vacuum pump having a rotor and at least one roller bearing
10/07/1986CA1212363A1 Axial and mixed flow fans and blowers
09/1986
09/03/1986EP0193181A2 Highly stable blade wheels for turbomolecular pumps
09/03/1986CN85105304A Large flow-quantity multistep disc-type molecular pump
09/02/1986US4609332 Turbo-molecular pump
08/1986
08/19/1986US4606699 Compressor casing recess
1 ... 27 28 29 30 31 32 33 34 35 36 37 38