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Class Information
Number: 418/88
Name: Rotary expansible chamber devices > Heat exchange or non-working fluid lubricating or sealing > With pump for non-working fluid
Description: Apparatus in which nonworking fluid is positively applied to the device or part thereof by a fluid displacement device having a movable fluid displacing element for impelling the nonworking fluid thereto.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7628593 |
Horizontal type scroll compressor including a first space and a second space |
Dec. 8, 2009 |
| 7581936 |
Hermetically sealed compressor having oil supply mechanism based on refrigerant pressure |
Sep. 1, 2009 |
| 7513760 |
Oil pump of scroll compressor |
Apr. 7, 2009 |
| 7494329 |
Oil pump for a compressor |
Feb. 24, 2009 |
| 7488165 |
Compressor having back pressure vane controlled for improving oil distribution |
Feb. 10, 2009 |
| 7481632 |
Scroll compressor with an oil passage plug to limit oil flow |
Jan. 27, 2009 |
| 7473081 |
Hermetically sealed compressor and method of manufacturing the same |
Jan. 6, 2009 |
| 7458790 |
Vacuum pump with improved oil lubrication |
Dec. 2, 2008 |
| 7442018 |
Compressor having an oil residue pool |
Oct. 28, 2008 |
| 7413423 |
Compressor having a lubrication shield |
Aug. 19, 2008 |
| 7390180 |
Oil pumping device of hermetic compressor |
Jun. 24, 2008 |
| 7381040 |
Compressor having pressure controlled for improving oil distribution |
Jun. 3, 2008 |
| 7371058 |
Oil feeding propeller of scroll compressor |
May. 13, 2008 |
| 7351045 |
Rotational inhibitor for compressor lubricant |
Apr. 1, 2008 |
| 7056108 |
Cooled screw-type vacuum pump |
Jun. 6, 2006 |
| 7040880 |
Horizontal rotary compressor |
May. 9, 2006 |
| 7021425 |
Closed type electric compressor |
Apr. 4, 2006 |
| 6866490 |
Water-injected screw compressor |
Mar. 15, 2005 |
| 6758660 |
Screw vacuum pump with a coolant circuit |
Jul. 6, 2004 |
| 6752605 |
Horizontal two stage rotary compressor with a bearing-driven lubrication structure |
Jun. 22, 2004 |
| 6688863 |
Oil leak prevention structure of vacuum pump |
Feb. 10, 2004 |
| 6663367 |
Shaft seal structure of vacuum pumps |
Dec. 16, 2003 |
| 6659747 |
Shaft seal structure of vacuum pumps |
Dec. 9, 2003 |
| 6551082 |
Oil free type screw compressor |
Apr. 22, 2003 |
| 6544020 |
Cooled screw vacuum pump |
Apr. 8, 2003 |
| 6503070 |
Rotary piston engine having an oil system for lubrication and cooling |
Jan. 7, 2003 |
| 6497563 |
Dry-compressing screw pump having cooling medium through hollow rotor spindles |
Dec. 24, 2002 |
| 6474965 |
Rotary piston engine having a cogwheel pump and an oil metering pump |
Nov. 5, 2002 |
| 6416296 |
Reciprocating hermetic compressor |
Jul. 9, 2002 |
| 6416302 |
Rotary helical screw-type compressor having a thermally separated oil supply container |
Jul. 9, 2002 |
| 6406281 |
Screw-type pumping unit for treatment of fluids in several phases |
Jun. 18, 2002 |
| 6361296 |
Scroll type compressor having a gap that collects and supplies oil to an oil supply path or the eccentric bearing |
Mar. 26, 2002 |
| 6264446 |
Horizontal scroll compressor |
Jul. 24, 2001 |
| 6257837 |
Variable oil flow regulator and method therefor |
Jul. 10, 2001 |
| 6227828 |
Gear pump for use in an electrically-operated sealed compressor |
May. 8, 2001 |
| 6210137 |
Scroll fluid machine |
Apr. 3, 2001 |
| 6210135 |
Internal combustion rotary engine |
Apr. 3, 2001 |
| 6196814 |
Positive displacement pump rotatable in opposite directions |
Mar. 6, 2001 |
| 6190149 |
Vacuum pump oil distribution system with integral oil pump |
Feb. 20, 2001 |
| 6149414 |
Oil-sealed vane-type rotary vacuum pump with an oil pump |
Nov. 21, 2000 |
| 6135738 |
Scroll compressor having a discharge port in the moveable scroll |
Oct. 24, 2000 |
| 6129531 |
Open drive scroll machine |
Oct. 10, 2000 |
| 6116877 |
Gear pump for use in an electrically-operated sealed compressor |
Sep. 12, 2000 |
| 6079967 |
Fluid compressor |
Jun. 27, 2000 |
| 6071100 |
Scroll compressor having lubrication of the rotation preventing member |
Jun. 6, 2000 |
| 6050794 |
Compressor having a pump with two adjacent rocking rotors |
Apr. 18, 2000 |
| 6039551 |
Gear pump for use in an electrically-operated sealed compressor |
Mar. 21, 2000 |
| 6019585 |
Oil-sealed vane-type rotary vacuum pump with oil feed |
Feb. 1, 2000 |
| 6012911 |
Scroll type compressor having an oil supply path for the eccentric bearing |
Jan. 11, 2000 |
| 5947709 |
Scroll compressor with oiling mechanism |
Sep. 7, 1999 |
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