| Patents for F04B 41 - Pumping installations or systems specially adapted for elastic fluids (2,502) |
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| 07/27/1993 | US5230609 Air brake system for a vehicle |
| 05/26/1993 | CN2134386Y Electric inflating and elevating dual-purpose hoisting jack |
| 05/19/1993 | EP0541929A1 Gas pumping system with liquid elimination feature |
| 05/11/1993 | CA1317576C Completely dry and sealed, straight displacement and reciprocating compressor pump |
| 04/28/1993 | EP0524267A4 Power plant for generation of electrical power and pneumatic pressure |
| 04/20/1993 | US5203683 Screw type pump |
| 04/20/1993 | US5203680 Integral gas compressor and internal combustion engine |
| 04/14/1993 | EP0537051A1 Installation for the pumping of gas with pumping speed regulation |
| 03/02/1993 | US5189905 Integral gas compressor and internal combustion engine |
| 01/27/1993 | EP0524267A1 Power plant for generation of electrical power and pneumatic pressure |
| 01/27/1993 | CN1068396A Compressor assembly |
| 01/13/1993 | EP0522673A2 Compressor unit |
| 01/11/1993 | CA2072269A1 Compressor assembly |
| 12/24/1992 | DE4119907A1 Portable motor and pump unit - has cables and hoses stowed on reels or rollers and is fitted with push handle and lockable supports |
| 12/08/1992 | US5169295 Method and apparatus for compressing gases with a liquid system |
| 11/24/1992 | US5165864 Vacuum pump unit |
| 11/05/1992 | DE4211068A1 Air compressor for motor vehicle - has outlet valve to reservoir, inlet valve controlled according to pressure in reservoir by electromagnet using clocking frequency dependent on pressure |
| 09/29/1992 | US5151015 Compression device, particularly for the pressure filling of a container |
| 07/28/1992 | US5133327 Air flow system having constant discharge volume |
| 07/28/1992 | CA1305690C Two stage liquid ring pump |
| 06/11/1992 | WO1992009792A1 Internal combustion engine with compressor function |
| 06/11/1992 | DE4133750A1 Compartmentalised bulk tanker vehicle |
| 05/26/1992 | US5116207 U-shaped compressor reservoir |
| 05/13/1992 | EP0484885A2 Screw type pump |
| 04/08/1992 | EP0479527A1 Air compressor tank mount |
| 04/01/1992 | CN1016087B Rotary axis for closed electric compressor |
| 03/24/1992 | US5097875 Portable reinflator |
| 03/10/1992 | US5094085 Refrigerating cycle apparatus with a compressor having simultaneously driven two compressor means |
| 03/03/1992 | US5092750 Device for the compression and storage of air |
| 02/25/1992 | CA1296194C Refrigeration system |
| 02/18/1992 | US5088895 Vacuum pumping apparatus |
| 02/11/1992 | US5087824 Power plant for generation of electrical power and pneumatic pressure |
| 12/18/1991 | EP0461943A2 Compression device, especially for filling a tank under pressure |
| 10/17/1991 | WO1991015895A1 Power plant for generation of electrical power and pneumatic pressure |
| 10/08/1991 | US5054740 Air compressor tank mount |
| 09/25/1991 | EP0448535A1 A seal device |
| 09/23/1991 | CA2038766A1 Seal device |
| 09/17/1991 | US5050233 Rotary compressor |
| 09/11/1991 | EP0445241A1 Vacuum pumping group. |
| 08/27/1991 | US5042521 Switching apparatus for suction system in a vacuum pump |
| 08/13/1991 | US5039280 Pump assembly for obtaining a high vacuum |
| 07/30/1991 | US5035582 Electro-pneumatic governor for a compressed air-system |
| 07/24/1991 | EP0247170B1 Improvements in vibratory diaphragm pumps |
| 07/09/1991 | US5030067 Air compressor assembly |
| 06/26/1991 | EP0434478A1 Device for the compression and storage of air |
| 06/19/1991 | CA2030982A1 Air compressing and accumulating device |
| 04/18/1991 | WO1991005166A1 Vacuum pumping group |
| 04/10/1991 | EP0420853A1 Vacuum pump unit arranged on a transportable support frame |
| 02/14/1991 | DE3925875A1 Transportable compressor unit with removable air tank - has compressor, tank and control elements mounted in open carrying frame serving as air conduit |
| 01/29/1991 | US4988268 Air compressor |
| 01/01/1991 | US4981162 Inflating a defective tire |
| 12/20/1990 | DE3919667A1 Control system for double compressor unit - has arrangement to vary main load on alternate basis |
| 12/11/1990 | CA1277501C Suction line flow stream separator for parallel compressor arrangements |
| 12/04/1990 | CA1277360C Hold-down mechanism for a pivotally-mounted motor on an air compressor |
| 10/23/1990 | US4964785 Pump assembly |
| 10/09/1990 | US4961691 Integral gas compressor and internal combustion engine |
| 09/18/1990 | CA1274095A1 Oil management in a parallel compressor arrangement |
| 09/04/1990 | US4954047 Evacuation apparatus |
| 07/03/1990 | US4938663 Air compressor malfunction detector |
| 06/28/1990 | WO1990007061A1 Pumping system for obtaining high vacuum |
| 06/20/1990 | EP0373975A1 Pumping unit for obstaining a high vacuum |
| 05/16/1990 | EP0367846A1 Pump set |
| 04/19/1990 | DE3835247A1 Multi-stage compressor |
| 04/04/1990 | EP0361089A1 Motor compressor unit for refrigeration or heat pump application |
| 04/03/1990 | CA1267397A1 Tank mounting for compressor and motor |
| 02/07/1990 | EP0353512A1 Portable reinflator |
| 12/19/1989 | US4887941 Method and apparatus for starting series-coupled vacuum pumps |
| 12/14/1989 | WO1989012169A1 Vacuum pump unit arranged on a transportable support frame |
| 10/31/1989 | US4877378 Vibratory diaphragm pumps |
| 09/05/1989 | US4863355 Air compressor having control means to select a continuous or intermittent operation mode |
| 08/29/1989 | US4860716 Multi-cylinder diesel internal combustion engine with low compression ratio in the cylinders |
| 08/23/1989 | EP0281572B1 Multi-cylinder diesel internal combustion engine with low compression ratio in the cylinders |
| 07/05/1989 | CN1004719B Low compression ratio multi-cylinder diesel engine |
| 06/21/1989 | EP0320579A1 Air compressor apparatus |
| 06/21/1989 | CN1033474A Rotary axis for closed electric compressor |
| 06/13/1989 | US4838343 Portable apparatus for cooling compressed air |
| 05/16/1989 | US4830580 Two-stage air compressor unit |
| 04/12/1989 | CN1032382A Novel rapid vacuum-pumping method |
| 03/29/1989 | EP0308846A1 Method for starting vacuum pumps connected in series, and device for carrying out the method |
| 03/14/1989 | US4811558 Gas recovery system |
| 01/03/1989 | US4795315 Two-stage liquid ring pump |
| 11/29/1988 | US4787211 Refrigeration system |
| 11/15/1988 | US4784585 Electric air compressor |
| 11/09/1988 | CN87103108A 回转式压缩机 Rotary Compressor |
| 10/20/1988 | DE3710782A1 Method and device for pumping out vapours and/or vaporous mixtures and/or gas-vapour mixtures or similar media |
| 10/11/1988 | US4776183 For storing a mixture of a lubricating oil and a refrigerant |
| 10/05/1988 | CN87213673U Air pump energy-saving device |
| 09/14/1988 | EP0281572A1 Multi-cylinder diesel internal combustion engine with low compression ratio in the cylinders. |
| 09/06/1988 | US4768930 Hold-down mechanism for a pivotally-mounted motor on an air compressor |
| 07/13/1988 | EP0274272A2 Two stage liquid ring pump |
| 06/22/1988 | EP0272229A1 Motor piston compressor unit |
| 06/14/1988 | US4750337 Oil management in a parallel compressor arrangement |
| 05/10/1988 | US4743168 Variable capacity compressor and method of operating |
| 05/04/1988 | EP0135550B1 Cryogenic storage tank with built-in pump |
| 05/04/1988 | CN87106281A Low compression ratio multi-cyclinder diesel engine |
| 05/03/1988 | US4741674 Manifold arrangement for isolating a non-operating compressor |
| 04/12/1988 | CA1235056A1 Cryogenic storage tank with built-in pump |
| 03/24/1988 | WO1988002065A1 Multi-cylinder diesel internal combustion engine with low compression ratio in the cylinders |
| 03/15/1988 | US4730999 Negative pressure supply apparatus for automobiles |
| 03/09/1988 | CN87106319A Reciprocal multifunctional suction-compression pump with a cylinder and two chambers |