| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
|---|
| 03/28/1989 | US4815952 Scroll type fluid displacement apparatus with improved fixed scroll construction |
| 03/28/1989 | US4815951 Scroll compressor with super-charging tube |
| 03/22/1989 | EP0308055A2 Screw rotor assembly for screw compressor or the like |
| 03/21/1989 | US4813856 Balanced rotary valve plate for internal gear device |
| 03/15/1989 | CN2034205U Reversible cycloid engine oil pump |
| 03/14/1989 | US4811471 Method of assembling scroll compressors |
| 03/07/1989 | US4810176 Anti-rotation mechanism for use with orbiting scroll member of scroll compressor |
| 02/28/1989 | US4808083 Variable capacity type vane compressor |
| 02/23/1989 | DE3826326A1 Vane vacuum pump |
| 02/23/1989 | DE3727281A1 Rotary displacement compressor |
| 02/22/1989 | CN2033068U Revolver compression engine |
| 02/16/1989 | DE3725806A1 Rotary piston compressor system - has housing with circular interior, and eccentrically located piston |
| 02/15/1989 | EP0302877A1 Rotary positive displacement machine for a compressible working fluid. |
| 02/08/1989 | EP0302728A2 Rotary valve plate |
| 02/08/1989 | EP0302677A1 Gas compressors |
| 02/08/1989 | EP0302676A2 Rotor vanes |
| 02/08/1989 | CN1030967A Fluid compressor |
| 02/07/1989 | US4802831 Fluid machine with resin-coated scroll members |
| 02/07/1989 | US4802830 Vane compressor without occurrence of vane chattering |
| 02/07/1989 | US4802827 Compressor |
| 02/01/1989 | EP0301273A2 Fluid compressor |
| 02/01/1989 | CN1030814A Improved structure of swirl compressor |
| 02/01/1989 | CN1030812A Volume machine |
| 01/31/1989 | US4801251 Sliding-vane rotary compressor |
| 01/24/1989 | US4799867 Vane pump with brittle vanes and rough finished housing surface |
| 01/24/1989 | US4799865 Intermittent service screw compressor |
| 01/18/1989 | EP0248839B1 Intermittent service screw compressor |
| 01/11/1989 | EP0298315A1 Scroll-type displacement engine |
| 01/10/1989 | US4797076 Inner seal of a rotary piston engine |
| 01/04/1989 | EP0297840A2 Scroll type compressor with variable displacement mechanism |
| 01/03/1989 | US4795325 Compressor of rotary vane type |
| 01/03/1989 | US4795323 Scroll machine with anti-rotation mechanism |
| 12/28/1988 | EP0296218A1 Profiles of screw-type rotors for rotary machines conveying a gaseous fluid. |
| 12/28/1988 | CN88103729A Compressor with radial bearing for supporting drive shaft |
| 12/28/1988 | CN87104104A Rotary positive displacemet machine for compressible working fluid |
| 12/27/1988 | US4793780 Rolling piston type rotary machine with discharge passage in vane |
| 12/27/1988 | US4793779 Rotating piston compressor having an axially adjustable rotary sleeve valve |
| 12/21/1988 | EP0295664A2 Compressor |
| 12/21/1988 | EP0295480A2 Positive displacement machine |
| 12/20/1988 | US4792296 Scroll compressor with pressure-equalizing passage and gas vent conduit in main shaft |
| 12/20/1988 | CA1247160A1 Floating seal for closing a cavity |
| 12/14/1988 | CN87103739A Dry-type vacuum pump |
| 12/13/1988 | US4790733 Rotary cylinder configuration and method to control slot dimensions during direct weld attachment to the shell |
| 12/13/1988 | CA1246510A1 Rotary positive displacement machine |
| 12/06/1988 | US4789315 Positive displacement machine, more particularly pump, and method for fabricating such pump |
| 12/06/1988 | US4789314 Multi-section roots vacuum pump of reverse flow cooling type with internal flow division arrangement |
| 11/29/1988 | US4787831 Dual seal system for roots blower |
| 11/29/1988 | CA1245607A1 Screw compressor bearing arrangement with positive stop accommodate thrust reverse |
| 11/28/1988 | EP0210984A4 Fluid motor or pump. |
| 11/22/1988 | US4786241 Radial seal of a rotary piston engine |
| 11/22/1988 | EP0190135A4 Rotary apparatus. |
| 11/17/1988 | EP0290664A1 Two-shaft pump |
| 11/17/1988 | EP0290663A1 Single or multistage two-shaft vacuum pump |
| 11/16/1988 | CN87215922U Involute type rotor vaccum-pump |
| 11/09/1988 | CN87103108A 回转式压缩机 Rotary Compressor |
| 11/08/1988 | US4782569 Method for manufacturing a rolling piston rotary compressor |
| 11/03/1988 | DE3804338A1 Pneumatische fluegelzellenmaschine Pneumatic fluegelzellenmaschine |
| 11/02/1988 | EP0288738A1 Supercharger device for internal combustion engines, particularly for motor vehicles |
| 11/02/1988 | CN87103089A Intermittent service screw compressor |
| 11/02/1988 | CN87101507A Conical ring plate rotating piston pump |
| 11/01/1988 | US4781550 Scroll compressor with driving and driven scrolls |
| 11/01/1988 | US4781541 External axial rotary piston blower with noise suppressing transfer ports |
| 10/26/1988 | EP0287797A2 Two-shaft vacuum pump with a synchronized transmission |
| 10/26/1988 | EP0287685A1 Two-shaft vacuum pump with a synchronizing transmission |
| 10/26/1988 | CN87212531U Control device for screw compression engine |
| 10/26/1988 | CN87210706U Oil-sealing vanes reciprocating mechanical vacuum-pump |
| 10/26/1988 | CN87209851U 滚柱泵 Roller pump |
| 10/25/1988 | US4780067 Multicylinder rotary compressor |
| 10/18/1988 | US4778352 Variable capacity vane compressor |
| 10/13/1988 | DE3708200A1 Rotary-screw compressor with overflow control |
| 10/12/1988 | EP0286341A2 Scroll type compressor |
| 10/11/1988 | US4776779 Fluid motor or pump |
| 10/11/1988 | US4776770 Variable capacity vane compressor |
| 10/11/1988 | US4776074 Rotary slide vane compressor |
| 10/06/1988 | DE3709493A1 Rotating-piston compressor |
| 10/05/1988 | EP0285100A2 Rotor assembly |
| 10/05/1988 | EP0284774A1 Scroll-type displacement machine |
| 10/05/1988 | EP0284712A2 Vane pump |
| 10/05/1988 | CN87208519U 干式真空泵 Dry vacuum pump |
| 10/05/1988 | CN87200274U 压缩机 Compressor |
| 10/04/1988 | US4774816 Air conditioner or refrigerating plant incorporating scroll compressor |
| 09/28/1988 | EP0283867A2 Rolling vane compressor |
| 09/27/1988 | US4773835 Scroll type pump with wrap curve offset for thermal expansion |
| 09/27/1988 | US4773144 Method of manufacture of scroll compressors and expanders |
| 09/27/1988 | CA1242424A1 Double-eccentric rotary apparatus with minimal chamber volume |
| 09/22/1988 | WO1988007137A1 Screw rotor machine |
| 09/21/1988 | EP0283283A2 Scroll type compressor with displacement adjusting mechanism |
| 09/21/1988 | CN88100326A 密封型旋转式压缩机 Sealed rotary compressor |
| 09/20/1988 | US4772192 Vane-type compressor |
| 09/20/1988 | US4772188 Scroll compressor with oil grooves in thrust bearing |
| 09/20/1988 | US4772185 Rotary vane pump having a plurality of inlet and outlet slots in a rotating sleeve |
| 09/14/1988 | EP0281654A1 Two-shaft machine |
| 09/14/1988 | CN88100278A Vortex tube type fluid devices |
| 09/14/1988 | CN85103401B Improved lubrication for rotary compressor vane |
| 09/13/1988 | US4770615 Screw compressor with scavenging port |
| 09/13/1988 | US4770609 Two-stage vacuum pump apparatus and method of operating the same |
| 09/08/1988 | DE3706582A1 Controllable rotary-screw compressor for industrial compressed gas |
| 09/06/1988 | US4768934 Port arrangement for rotary positive displacement blower |
| 08/30/1988 | US4767293 Scroll-type machine with axially compliant mounting |
| 08/30/1988 | US4767284 Screw vacuum pump unit |