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Class Information
Number: 418/97
Name: Rotary expansible chamber devices > Heat exchange or non-working fluid lubricating or sealing > Non-working and working fluids intermix in working chamber
Description: Apparatus in which the nonworking fluid enters the working chamber of the device to mix with the working fluid therein either (1) by directly conducting the nonworking fluid to the working chamber or (2) by the leakage or flow of the nonworking fluid thereto after being initially directed to another part of the device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7547203 |
Screw compressor |
Jun. 16, 2009 |
| 7537436 |
Compressor |
May. 26, 2009 |
| 7527484 |
Muffler of scroll compressor |
May. 5, 2009 |
| 7473084 |
Oil-cooled screw compressor |
Jan. 6, 2009 |
| 7473083 |
Oil separating device for compressor |
Jan. 6, 2009 |
| 7462021 |
Rotary compressor, and car air conditioner and heat pump type water heater using the compressor |
Dec. 9, 2008 |
| 7438539 |
Hermetic type scroll compressor and refrigerating and air-conditioning apparatus |
Oct. 21, 2008 |
| 7413422 |
Compressor including pressure relief mechanism |
Aug. 19, 2008 |
| 7320578 |
Compressor |
Jan. 22, 2008 |
| 7314355 |
Compressor including deviated separation chamber |
Jan. 1, 2008 |
| 7281912 |
Compressor having a safety device being built in at least one of the screw plugs of the oil-separator |
Oct. 16, 2007 |
| 7281913 |
Compressor including integrally formed separation tube and seal bolt |
Oct. 16, 2007 |
| 7234926 |
Air compressor assembly |
Jun. 26, 2007 |
| 7220110 |
Compressor having a throttled-return passage connecting an oil accumulator to a seal container |
May. 22, 2007 |
| 7134854 |
Oil recycling apparatus for compressor |
Nov. 14, 2006 |
| 7056108 |
Cooled screw-type vacuum pump |
Jun. 6, 2006 |
| 7040882 |
Water-injected screw-type compressor |
May. 9, 2006 |
| 7018185 |
Liquid recovery method and system for compression mechanism |
Mar. 28, 2006 |
| 7018184 |
Compressor assembly having baffle |
Mar. 28, 2006 |
| 7011183 |
Suction oil injection for rotary compressor |
Mar. 14, 2006 |
| 6991443 |
Oil injected screw compressor |
Jan. 31, 2006 |
| 6896496 |
Compressor assembly having crankcase |
May. 24, 2005 |
| 6893237 |
Horizontal compressor |
May. 17, 2005 |
| 6866490 |
Water-injected screw compressor |
Mar. 15, 2005 |
| 6860730 |
Methods and apparatus for unloading a screw compressor |
Mar. 1, 2005 |
| 6851940 |
Gas compressor |
Feb. 8, 2005 |
| 6769890 |
Gas rotary screw compressor |
Aug. 3, 2004 |
| 6736623 |
Gas compressor having a press-fixed oil separation filter |
May. 18, 2004 |
| 6719546 |
Arrangement for controlling the flow of a coolant fluid in a compressor |
Apr. 13, 2004 |
| 6701220 |
Industrial robot device |
Mar. 2, 2004 |
| 6695602 |
Bacterial growth inhibition in a circulation system comprising a compressor |
Feb. 24, 2004 |
| 6619936 |
Scroll compressor with vapor injection |
Sep. 16, 2003 |
| 6612820 |
Screw compressor having sealed low and high pressure bearing chambers |
Sep. 2, 2003 |
| 6554593 |
Dry screw vaccum pump having nitrogen injection |
Apr. 29, 2003 |
| 6520758 |
Screw compressor assembly and method including a rotor having a thrust piston |
Feb. 18, 2003 |
| 6478560 |
Parallel module rotary screw compressor and method |
Nov. 12, 2002 |
| 6443711 |
Inlet bearing lubrication for a screw machine |
Sep. 3, 2002 |
| 6409489 |
Compressor installation with water-injected compressor element |
Jun. 25, 2002 |
| 6375443 |
Screw rotor type wet vacuum pump |
Apr. 23, 2002 |
| 6364645 |
Screw compressor having a compressor screw housing and a spaced outer housing |
Apr. 2, 2002 |
| 6293776 |
Method of connecting an economizer tube |
Sep. 25, 2001 |
| 6258293 |
Refrigeration cycle |
Jul. 10, 2001 |
| 6220825 |
Rotary-screw air compressor having a separator and a cooler fan assembly |
Apr. 24, 2001 |
| 6196816 |
Unequal injection ports for scroll compressors |
Mar. 6, 2001 |
| 6190149 |
Vacuum pump oil distribution system with integral oil pump |
Feb. 20, 2001 |
| 6186758 |
Multi-rotor helical-screw compressor with discharge side thrust balance device |
Feb. 13, 2001 |
| 6174148 |
Water jet type air compressor system, its starting method, and water quality control method thereof |
Jan. 16, 2001 |
| 6149408 |
Coalescing device and method for removing particles from a rotary gas compressor |
Nov. 21, 2000 |
| 6149414 |
Oil-sealed vane-type rotary vacuum pump with an oil pump |
Nov. 21, 2000 |
| 6129532 |
CO.sub.2 compressor |
Oct. 10, 2000 |
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