| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 03/17/1999 | EP0902186A1 Scroll-type fluid displacement machine |
| 03/17/1999 | CN2310874Y Vane compressor |
| 03/17/1999 | CN1210948A Refrigerant compressor and refrigerating apparatus |
| 03/17/1999 | CN1210947A 压缩机 Compressor |
| 03/17/1999 | CN1210945A Scroll compressor |
| 03/17/1999 | CN1210936A Displacement machine for compressible media |
| 03/17/1999 | CN1042565C 旋转压缩机 Rotary compressor |
| 03/10/1999 | EP0900939A1 Scroll compressor |
| 03/10/1999 | CN2310183Y Teeth type end face exhausting blower |
| 03/10/1999 | CN2310182Y 压缩机 Compressor |
| 03/10/1999 | CN1210577A Twin-cylinder impeller pump |
| 03/10/1999 | CN1210206A 旋转式压缩机 Rotary compressor |
| 03/10/1999 | CN1210205A Vortex compressor |
| 03/09/1999 | US5879146 Stepped wear indicator for a radial compressor |
| 03/04/1999 | WO1999010654A1 Electric compressor |
| 03/04/1999 | DE19736907A1 Elektrisch angetriebener Verdichter Electrically driven compressor |
| 03/03/1999 | EP0899460A2 Scroll type compressor |
| 03/03/1999 | EP0899459A1 Scroll type compressor |
| 03/03/1999 | EP0899423A1 Scroll compressible fluid displacement machine |
| 03/03/1999 | EP0898655A1 Plural screw positive displacement machines |
| 03/03/1999 | CN1209862A Scroll element having relieved thrust surface |
| 03/03/1999 | CN1042361C Horizontal vortex compressor |
| 02/26/1999 | CA2245629A1 Displacement machine for compressible media |
| 02/25/1999 | DE19736017A1 Vacuum pump or compressor for compacting gases |
| 02/24/1999 | CN2308736Y Rotary vane air conditioning compressor |
| 02/24/1999 | CN2308735Y Spiral vane air compressor |
| 02/24/1999 | CN1208820A Rotary-piston rotator compressor |
| 02/24/1999 | CN1208819A Double roll and dry type scroll vacuum pump |
| 02/24/1999 | CN1042259C Conveying screw pair used for rotating compresive pump |
| 02/23/1999 | US5873711 Scroll compressor with reduced separating force between fixed and orbiting scroll members |
| 02/23/1999 | US5873707 For controlling fluid communication |
| 02/18/1999 | WO1999008001A1 Horizontal type scroll compressor |
| 02/16/1999 | US5870989 Abrasion resistant valve seat made of sintered alloy for internal combustion engines |
| 02/16/1999 | CA2172744C Composite fiber rotor vane |
| 02/16/1999 | CA2164570C Scroll compressor with flywheel |
| 02/16/1999 | CA2089783C Scroll type compressor with variable displacement mechanism |
| 02/11/1999 | WO1999006710A1 Rotary pump with hydraulic vane actuation |
| 02/10/1999 | CN2307126Y Vacuum liquid circulating pump |
| 02/10/1999 | CN1207795A Twin feed screw |
| 02/10/1999 | CN1207462A Displacement type fluid machine |
| 02/09/1999 | US5868559 Compressor vane spring mechanism |
| 02/04/1999 | DE19834033A1 Vacuum pump for brake servo |
| 02/04/1999 | DE19830312A1 Hybrid drive for compressor |
| 02/03/1999 | EP0894980A2 Vane compressor with delivery pressure control |
| 02/03/1999 | EP0894979A1 Displacement type fluid machine |
| 02/03/1999 | EP0894978A1 Double-wrap dry scroll vacuum pump |
| 02/03/1999 | EP0665921B1 Scroll apparatus with reduced inlet pressure drop |
| 02/03/1999 | CN1206795A Multi-blade type impeller Roots blower (pump) structure with counter-flow device |
| 02/02/1999 | US5865607 Refrigerating cycle or compressor having foreign matter collector |
| 02/02/1999 | CA2089948C Scroll-type fluid machine |
| 01/28/1999 | WO1999004168A1 Single-source gas actuation for screw compressor slide valve assembly |
| 01/28/1999 | WO1999004167A1 Vane pump |
| 01/27/1999 | EP0805923A4 Multi-rotor helical-screw compressor |
| 01/27/1999 | CN1041851C Method for making composite aluminium article |
| 01/26/1999 | US5863191 Scroll compressor having a discharge muffler chamber |
| 01/26/1999 | US5863190 Scroll compressor |
| 01/26/1999 | CA2147644C Scroll apparatus with reduced inlet pressure drop |
| 01/26/1999 | CA2136025C Piston unloader arrangement for screw compressors |
| 01/26/1999 | CA2133361C Rotary compressor thrust washer |
| 01/20/1999 | CN1205397A Scroll hydraulic machine |
| 01/19/1999 | USRE36053 Compact Oldham coupling |
| 01/19/1999 | US5860801 Rotary screw compressor with unloading means |
| 01/19/1999 | US5860791 Scroll compressor with end-plate valve having a conical passage and a free sphere |
| 01/14/1999 | WO1999001664A1 Seal structure for casing |
| 01/14/1999 | CA2264149A1 Seal structure for casing |
| 01/13/1999 | EP0890744A2 Scroll compressor |
| 01/13/1999 | EP0890709A1 Scroll hydraulic machine |
| 01/13/1999 | CN2303951Y Gear oil-pump |
| 01/13/1999 | CN1205055A Oil separator for compressors, scroll compressor using said separator and method manufacturing said oil separator |
| 01/12/1999 | US5857844 Scroll compressor with reduced height orbiting scroll wrap |
| 01/12/1999 | US5857589 Method and apparatus for accurately dispensing liquids and solids |
| 01/07/1999 | EP0889241A1 Scroll-type fluid displacement apparatus and method for manufacturing such apparatus |
| 01/07/1999 | DE19728434A1 Screw compressor for compressible media |
| 01/06/1999 | CN2303100Y Two side oil-free swirl vacuum pump |
| 01/06/1999 | CN2303099Y Fixation device used for cartouch air blowing machine |
| 01/06/1999 | CN1204385A Radial compliance mechanism for co-rotating scroll apparatus |
| 01/06/1999 | CN1041546C Oblique tray machine |
| 01/05/1999 | US5855475 Scroll compressor having bypass valves |
| 01/05/1999 | US5855473 High displacement rate,scroll-type, fluid handling apparatus |
| 01/05/1999 | CA2161363C Rolling piston type expansion machine |
| 01/05/1999 | CA2025615C Orbiting member fluid displacement apparatus with rotation preventing mechanism |
| 12/30/1998 | CN1041453C Swinging rotary compressor |
| 12/29/1998 | US5853288 Scroll compressor having a counterboring part communicating with an intermediate pressure chamber |
| 12/29/1998 | US5853287 Scroll compressor having a thrust plate |
| 12/23/1998 | EP0885358A1 Rotary piston pump |
| 12/23/1998 | CN2301559Y Multi-blade wheel for Roots blower and pump |
| 12/23/1998 | CN1041342C 回转式压缩机 Rotary Compressor |
| 12/22/1998 | CA2174200C Scroll compressor having a suction check valve |
| 12/17/1998 | WO1998057067A1 Screw spindle vacuum pump and operating method |
| 12/17/1998 | WO1998057066A1 Scroll type fluid machine |
| 12/17/1998 | DE19724643A1 Schraubenverdichter und Verfahren zum Betrieb desselben The same screw-type compressor and method of operating |
| 12/17/1998 | CA2254730A1 Scroll type fluid machine |
| 12/16/1998 | EP0883747A1 Two-rotor sliding vane compressor |
| 12/16/1998 | CN1201872A 涡旋式压缩机 Scroll compressor |
| 12/16/1998 | CN1201871A Scroll compressor |
| 12/15/1998 | US5848883 Scroll compressor having a back pressure partitioning member |
| 12/10/1998 | WO1998055768A1 Pulsating capacity regulation system |
| 12/10/1998 | WO1998055767A1 Horizontal scroll compressor |
| 12/10/1998 | WO1998024722A3 Method and apparatus for accurately dispensing liquids and solids |
| 12/09/1998 | EP0882894A2 Scroll compressor |