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Class Information
Number: 418/84
Name: Rotary expansible chamber devices > Heat exchange or non-working fluid lubricating or sealing > With condition responsive control of non-working fluid
Description: Apparatus under 83 in which there is provided means for sensing either a condition of operation or a change in a condition of operation of the device and for controlling nonworking fluid flow in response thereto.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7607905 |
Fluid compressing system having oil-releasing port being between oil chamber and oil-adjusting tank for returning oil |
Oct. 27, 2009 |
| 7553142 |
Lubrication system for compressor |
Jun. 30, 2009 |
| 7481634 |
Volumetric screw compressor provided with delivery adjustment device |
Jan. 27, 2009 |
| 7232295 |
Tempering method for a screw-type vacuum pump |
Jun. 19, 2007 |
| 7204678 |
Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method |
Apr. 17, 2007 |
| 7077635 |
Pump comprising a water supply |
Jul. 18, 2006 |
| 6866490 |
Water-injected screw compressor |
Mar. 15, 2005 |
| 6808836 |
Air supply system for fuel cell |
Oct. 26, 2004 |
| 6719546 |
Arrangement for controlling the flow of a coolant fluid in a compressor |
Apr. 13, 2004 |
| 6695602 |
Bacterial growth inhibition in a circulation system comprising a compressor |
Feb. 24, 2004 |
| 6409489 |
Compressor installation with water-injected compressor element |
Jun. 25, 2002 |
| 6375443 |
Screw rotor type wet vacuum pump |
Apr. 23, 2002 |
| 6315535 |
Screw vacuum pump having valve controlled cooling chambers |
Nov. 13, 2001 |
| 6301898 |
Rotary positive displacement device |
Oct. 16, 2001 |
| 6059551 |
Oil injected screw compressor with thrust force reducing means |
May. 9, 2000 |
| 5697763 |
Tank mounted rotary compressor |
Dec. 16, 1997 |
| 5634345 |
Oil monitoring system |
Jun. 3, 1997 |
| 5626470 |
Method for providing lubricant to thrust bearing |
May. 6, 1997 |
| 5433590 |
Cooling device for the lubrication circuit of a compressor |
Jul. 18, 1995 |
| 5341658 |
Fail safe mechanical oil shutoff arrangement for screw compressor |
Aug. 30, 1994 |
| 5318151 |
Method and apparatus for regulating a compressor lubrication system |
Jun. 7, 1994 |
| 5236320 |
Oil injection type screw compressor |
Aug. 17, 1993 |
| 5221199 |
Lubrication oil volume control device in a scroll type compressor |
Jun. 22, 1993 |
| 5201648 |
Screw compressor mechanical oil shutoff arrangement |
Apr. 13, 1993 |
| 5174740 |
Hermetic type scroll compressor with regulation of lubricant to the inlet |
Dec. 29, 1992 |
| 5174741 |
Liquid injecting type oil-free screw compressor |
Dec. 29, 1992 |
| 5100309 |
Cooling medium pump of a rotary piston internal combustion engine |
Mar. 31, 1992 |
| 5066202 |
Method and apparatus for delivering oil to a multi-stage pump |
Nov. 19, 1991 |
| 5028220 |
Cooling and lubrication system for a vacuum pump |
Jul. 2, 1991 |
| 4995797 |
Rotary screw vacuum pump with pressure controlled valve for lubrication/sealing fluid |
Feb. 26, 1991 |
| 4983107 |
Multistage rotary piston vacuum pump having sleeves to fix shaft positions |
Jan. 8, 1991 |
| 4983106 |
Rotary screw machine with multiple chambers in casing for lubrication-coding fluid |
Jan. 8, 1991 |
| 4936761 |
Vane backpressure providing apparatus for sliding vane type compressor |
Jun. 26, 1990 |
| 4861246 |
Injected compressor with liquid switch |
Aug. 29, 1989 |
| 4842499 |
Scroll-type positive displacement apparatus with oil supply to compression chamber |
Jun. 27, 1989 |
| 4826410 |
Cooling systems for rotary piston engines |
May. 2, 1989 |
| 4799865 |
Intermittent service screw compressor |
Jan. 24, 1989 |
| 4780067 |
Multicylinder rotary compressor |
Oct. 25, 1988 |
| 4776778 |
Refrigerant compressor with shaft bearing having improved wear resistance |
Oct. 11, 1988 |
| 4774918 |
Engine lubricating system |
Oct. 4, 1988 |
| 4743183 |
Rotary vane compressor with discharge fluid to front and rear shaft bearings and vane slats |
May. 10, 1988 |
| 4743184 |
Rotary compressor with heating passage between discharge chamber and shaft seal |
May. 10, 1988 |
| 4720250 |
Regulator for cooling or heat pump systems |
Jan. 19, 1988 |
| 4671748 |
Compressor unit for the production of compressed air |
Jun. 9, 1987 |
| 4648815 |
Rotary air compressor with thermally responsive oil injection |
Mar. 10, 1987 |
| 4639196 |
Fluid control valve |
Jan. 27, 1987 |
| 4605357 |
Lubrication system for a compressor |
Aug. 12, 1986 |
| 4583919 |
Lubrication system for a compressor |
Apr. 22, 1986 |
| 4526523 |
Oil pressure control system |
Jul. 2, 1985 |
| 4525129 |
Oil-sealed vacuum pump |
Jun. 25, 1985 |
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