| Patents for F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups (16,981) |
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| 07/22/1999 | DE19902243A1 Improving the security of inlet and outlet openings sealing plugs for compressors in store or transit |
| 07/20/1999 | US5924855 Screw compressor with cooling |
| 07/15/1999 | WO1999035402A1 Cooling device |
| 07/15/1999 | CA2316822A1 Cooling device |
| 07/14/1999 | CN1222652A Closed-type scroll compressor |
| 07/14/1999 | CN1222645A Compressor |
| 07/13/1999 | US5921761 Scroll machine with discharge duct |
| 07/13/1999 | US5921273 Delivery valve assembly for compressor |
| 07/13/1999 | CA2171643C Engaged rotor |
| 07/07/1999 | CN2327811Y Pump for sealed holes in mines |
| 07/06/1999 | US5919034 Scroll compressor and method for manufacturing an oldham ring therefor |
| 06/30/1999 | EP0926344A1 Seal structure for casing |
| 06/30/1999 | EP0823025B1 Screw-type compressor with water hammer protection |
| 06/30/1999 | CN2326768Y Silencing device for air pump |
| 06/30/1999 | CN1221477A Scroll type fluid machine |
| 06/30/1999 | CN1221076A Scroll compressor with integral outer housing and fixed scroll member |
| 06/24/1999 | WO1999031355A1 Improved scroll compressor assembly |
| 06/24/1999 | DE19857560A1 Pump unit without own bearing |
| 06/23/1999 | EP0924433A1 Scroll-type compressor |
| 06/23/1999 | EP0924432A1 Swing-link mechanism of a scroll-type compressor |
| 06/23/1999 | EP0924431A1 Scroll compressor |
| 06/23/1999 | EP0924430A1 Closed-type scroll compressor |
| 06/23/1999 | CN1220347A Scroll-type compressor and operation method therefor |
| 06/22/1999 | US5913664 Safety relief valve assembly for a fluid displacement apparatus |
| 06/17/1999 | WO1999017023A3 Fluid compressor |
| 06/17/1999 | WO1999015764A8 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 06/16/1999 | EP0922860A1 Optimized location for scroll compressor economizer injection ports |
| 06/16/1999 | CN1219650A Motor bearing lubrication in rotary compressors |
| 06/16/1999 | CN1219649A Enhanced flow compressor discharge port entrance |
| 06/16/1999 | CN1219648A Optimized location for scroll compressor economizer injection ports |
| 06/16/1999 | CN1219646A Vortex-type compressor |
| 06/09/1999 | EP0921317A1 Motor bearing lubrication in rotary compressors |
| 06/09/1999 | EP0921316A1 Scroll compressor with radial guiding pin in eccentric bush |
| 06/09/1999 | EP0921315A2 Compressor discharge port with valve |
| 06/09/1999 | EP0920590A1 Dry vacuum machine with shaft passage |
| 06/09/1999 | EP0920587A1 Refrigerant compressor |
| 06/09/1999 | EP0839283B1 Oil-sealed vane-type rotary vacuum pump with oil feed |
| 06/09/1999 | EP0839282B1 Oil-sealed vane-type rotary vacuum pump with an oil pump |
| 06/09/1999 | CN1218877A Rotary compressor cylinder assembly |
| 06/08/1999 | US5910161 A liquid injection type scroll compressor is used to a refrigerator using hydrocarbon fluoride which does not contain chlorine as an operating fluid |
| 06/02/1999 | EP0919725A1 Compressor |
| 06/02/1999 | EP0919718A2 Refrigerant compressor with cooling fan |
| 06/02/1999 | EP0918936A1 Drive apparatus, such as a liquid ring machine and a method for driving a drive apparatus, such as transferring fluid |
| 06/02/1999 | CN1218145A Compressor having capacity-controlling mechanism with abrasion-free cylinder |
| 06/02/1999 | CN1218144A Compressor |
| 06/02/1999 | CN1218143A Hermetic compressor |
| 05/26/1999 | EP0918160A1 Compressor |
| 05/20/1999 | WO1999024718A1 Hermetic scroll compressor |
| 05/19/1999 | EP0916848A1 Compressor having capacity-controlling mechanism with abrasion-free cylinder |
| 05/19/1999 | EP0916847A1 Compressor housing |
| 05/19/1999 | CN2319607Y Lubricating oil scatter |
| 05/19/1999 | CN1216803A Scroll compressor with pressure equalization groove |
| 05/18/1999 | US5905233 Noise suppressor for displacement compressors |
| 05/18/1999 | US5904473 Vacuum pump |
| 05/18/1999 | CA2252157A1 Compressor housing |
| 05/14/1999 | WO1999023528A2 Electrochromic system |
| 05/14/1999 | WO1999022794A1 Noise damping mounting body for cpap compressor |
| 05/14/1999 | CA2308308A1 Electrochromic system |
| 05/12/1999 | DE19749572A1 Vacuum pump or dry running screw compactor |
| 05/12/1999 | CN2318429Y Anti-tripping device for screw pump |
| 05/11/1999 | US5901559 Method of operating an oil lever regulator system |
| 05/06/1999 | EP0913581A1 Scroll compressor with pressure equalization groove |
| 05/06/1999 | EP0913580A1 Scroll-type fluid machine |
| 05/06/1999 | EP0630441B1 Screw compressor providing thrust bearing force compensation |
| 05/06/1999 | DE19748385A1 Vacuum pump or compressor |
| 05/06/1999 | DE19748358A1 Elektrochromes System Electrochromic system |
| 05/05/1999 | CN1215806A Improved lubrication systems for scroll compressors |
| 05/05/1999 | CN1215805A Propeller structure for hermetically sealed compressor |
| 05/05/1999 | CN1215804A Scroll-type fluid machine including float-protecting pin having partially-cut head |
| 05/05/1999 | CN1215801A Helical impeller compressor |
| 05/04/1999 | US5899677 Vane compressor having a high-pressure space formed in the cam ring |
| 05/04/1999 | US5899667 Fluid compressor with seal scavenge and method |
| 05/04/1999 | US5899574 Supporting structure of bearings |
| 04/28/1999 | EP0911526A1 Lubrication systems for scroll compressors |
| 04/28/1999 | CN1215133A Fluid machinery |
| 04/28/1999 | CA2219684A1 Vented cap |
| 04/22/1999 | WO1999019631A1 Screw vacuum pump provided with rotors |
| 04/22/1999 | WO1999019630A1 Cooled screw vacuum pump |
| 04/22/1999 | DE19744466A1 Screw compressor for gases, with driven- and auxiliary rotors |
| 04/21/1999 | CN1214410A 转子压缩机 Rotary Compressor |
| 04/15/1999 | WO1999018355A1 Screw-type compressor |
| 04/15/1999 | DE19846949A1 Air conditioning for electric vehicle |
| 04/15/1999 | DE19745616A1 Cooling system for helical vacuum pump |
| 04/15/1999 | DE19745615A1 Screw vacuum pump with rotors |
| 04/15/1999 | DE19745362A1 Compressed air dewatering device |
| 04/14/1999 | EP0724690B1 Device for connecting a screw rotor machine to a driving or driven pulley |
| 04/14/1999 | CN1213745A 流体机械 Fluid Machinery |
| 04/14/1999 | CN1213744A Scroll compressor with economizer fluid passage defined adjacent end face of fixed scroll |
| 04/13/1999 | US5893355 Supercharger pulley isolator |
| 04/13/1999 | CA2150632C Noise damper for hermetic compressors |
| 04/08/1999 | WO1999017023A2 Fluid compressor |
| 04/07/1999 | EP0907026A1 Scroll compressor with economizer fluid passage defined adjacent end face of fixed scroll |
| 04/07/1999 | EP0746670B1 Meshing type rotors |
| 04/07/1999 | CN2313082Y Protection device for connection screw of pump under hydrochloric-acid liquid |
| 04/07/1999 | CN1042851C 旋转式压缩机 Rotary compressor |
| 04/06/1999 | US5890884 Screw-type compressor with liquid lock protection |
| 04/01/1999 | WO1999015764A1 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 03/31/1999 | EP0904492A1 Displacement machine on the spiral principle |
| 03/31/1999 | CN1212333A Oil-cooled type screw compressor |
| 03/31/1999 | CN1212331A Closed-type electrically-driven compressor |