| Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236) |
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| 09/08/1989 | WO1989008188A1 Linear reciprocating compressor |
| 09/06/1989 | CN2044011U Superpressure double pressure manual pump |
| 09/05/1989 | US4863070 Meter pump for liquid and/or low-viscosity substances |
| 08/29/1989 | US4861239 High efficiency pump method and apparatus with hydraulic actuation |
| 08/23/1989 | EP0329208A2 Hydraulically driven high-pressure cleaner |
| 08/23/1989 | CN2043281U Residual liquid recovery plant of household liquefied petroleum gas |
| 08/23/1989 | CN2043280U Handled portable water pump |
| 08/23/1989 | CN2043279U Thick sealant injecting device |
| 08/15/1989 | US4856967 Hybrid high pressure pump for gas-liquid permeameters |
| 08/10/1989 | WO1989007201A1 Apparatus for removing fluid from the ground and method for same |
| 08/09/1989 | CN2042520U Fluid-driving pressure-testing pump |
| 08/08/1989 | US4854484 Viscous product dispenser |
| 07/25/1989 | US4850826 Suction pump with collapsible bellows |
| 07/25/1989 | US4850817 Mechanical drive system for a medication infusion system |
| 07/19/1989 | CN2041370U Multipurpose pump for inflating and water sucking |
| 07/13/1989 | WO1989006316A1 Improved fluid-driven pump |
| 07/11/1989 | US4846634 Water to emulsion transformer |
| 07/06/1989 | DE3742938A1 Piston pump and method for controlling it |
| 07/05/1989 | EP0323216A2 Reciprocating device and switching mechanism therefor |
| 07/04/1989 | US4844700 Pressure amplifying pump system |
| 06/28/1989 | EP0321573A1 Reciprocation switching structure for pumps |
| 06/28/1989 | CN2040171U Two-way hand water well pump |
| 06/28/1989 | CN2040170U Multifunctional liquid-transfering pump |
| 06/27/1989 | US4842495 Non throttling discharge pump assembly |
| 06/27/1989 | US4842493 Piezoelectric pump |
| 06/21/1989 | CN1033473A Wave transmission hydraulic pump |
| 06/20/1989 | CA1255967A1 Pumping device |
| 06/20/1989 | CA1255966A1 Mud pump |
| 06/15/1989 | WO1989005405A1 Oil hydraulic pump |
| 06/14/1989 | EP0320462A1 A fuel-injection pump with variable cylinder capacity for diesel engine injection systems |
| 06/13/1989 | US4838297 Apparatus for injecting a fluid into a network |
| 06/13/1989 | CA1255538A1 Pressure transfer fluid heater |
| 06/07/1989 | EP0319274A1 Mechanical drive system for a medication infusion system |
| 06/07/1989 | EP0319093A1 Pump unit |
| 06/06/1989 | US4836924 Reverse osmosis system and automatic cycling booster pump therefor |
| 06/06/1989 | CA1255153A1 Driving arrangement, especially for a liquid metering pump |
| 05/31/1989 | CN2038560U Multifunctional filling gun |
| 05/30/1989 | US4834618 Oil feeding systems |
| 05/24/1989 | EP0316638A1 Pneumatically or hydraulically driven piston pump |
| 05/24/1989 | CN2038160U Man-power water pump driven by bicycle |
| 05/23/1989 | CA1254443A1 Reciprocating pump |
| 05/16/1989 | US4830583 Fluid motor-pumping apparatus and system |
| 05/11/1989 | DE3737105A1 Pressure intensifier with two separate pressure-medium circuits |
| 05/10/1989 | EP0315264A1 Pump for transferring liquids, in particular beer or carbonated beverages |
| 05/10/1989 | EP0314994A1 Pump arrangement with double pump |
| 05/10/1989 | CN2037398U Inflator type beam-pumping unit |
| 05/09/1989 | US4828465 Single-acting, gas-operated pump |
| 05/09/1989 | US4827831 Reciprocating device and switching mechanism therefor |
| 05/03/1989 | EP0314374A2 Reverse osmosis system and automatic cycling booster pump therefor |
| 05/02/1989 | US4826046 Multi-channel linear concentrate pump |
| 04/26/1989 | EP0312722A1 Dosing and spraying pump for liquid viscous products |
| 04/26/1989 | CN2036589U Hand pressure water pump |
| 04/26/1989 | CN2036588U Multipurpose hand pump |
| 04/25/1989 | US4824336 Vacuum pump |
| 04/25/1989 | US4823991 Manually operated dual invertible pump |
| 04/25/1989 | US4823560 Refrigeration system employing refrigerant operated dual purpose pump |
| 04/20/1989 | DE3733596A1 Reciprocating forcing pump |
| 04/19/1989 | CN2036216U Siphon liquid transferring device |
| 04/12/1989 | EP0310642A1 Standard gas flow apparatus |
| 04/11/1989 | US4820136 Fluid pressure intensifying system |
| 04/05/1989 | CN2035402U Man-power plastic membrane pump |
| 04/05/1989 | CN2035400U Three-power reciprocating water pump |
| 04/05/1989 | CN2035399U Pedal water pumping device |
| 04/04/1989 | US4818191 Double-acting diaphragm pump system |
| 03/29/1989 | EP0308468A1 Hydraulic manually-operated single-piston pump. |
| 03/29/1989 | CN2035003U Automatic hydraulic booster pump |
| 03/29/1989 | CN1032061A Metering and spray pump for liquid and low-viscosity substances |
| 03/29/1989 | CN1032060A Multipurpose hydraulic transmission piston pump |
| 03/28/1989 | CA1251690A1 Pump drive assembly |
| 03/15/1989 | CN2034202U Pedal type diaphragm pump |
| 03/15/1989 | CN1031744A Linearly-adjusted and non-circular gear driven advection pump |
| 03/14/1989 | US4812109 Apparatus for driving piston by fluid pressure |
| 03/09/1989 | DE3729077A1 Reciprocating pump |
| 03/07/1989 | US4810168 Low pulsation pump device |
| 03/07/1989 | US4809731 Liquid injection apparatus having an external adjustor |
| 03/02/1989 | DE3808577A1 Delivery device for mineral oil products |
| 03/02/1989 | DE3727803A1 Delivery device for mineral oil products |
| 03/01/1989 | EP0304567A1 Dosing pump for liquid and/or viscous products |
| 02/22/1989 | EP0303861A1 Dispersing apparatus for mineral oil products |
| 02/21/1989 | US4806079 Apparatus for simultaneously pumping a plurality of liquids |
| 02/15/1989 | EP0303220A2 Low pulsation displacement pump |
| 02/08/1989 | CN2032265U Animal-drawn water pump |
| 02/08/1989 | CN2032262U Manual vacuum deep-well pump |
| 02/08/1989 | CN2032261U Pedl water pump |
| 02/08/1989 | CN1030969A Rotary/reciprocatory motion converter |
| 02/02/1989 | DE3724110A1 Einweg-airless-spruehdose mit druckgasantrieb Disposable airless spray with compressed gas driving |
| 02/01/1989 | CN2031847U Single-cylinder superhigh pressure hand-operated pressure-testing pump |
| 02/01/1989 | CN2031846U Water pump actuated by muscle-power |
| 02/01/1989 | CN2031845U Hand-operated siphon pump |
| 01/31/1989 | US4801049 Shrouded container/finger-depressible pump combination |
| 01/26/1989 | WO1989000461A1 Disposable airless sprayer |
| 01/25/1989 | CN2031457U Siphonable hand miniature reciprocating pump. |
| 01/25/1989 | CN2031453U Hand liquid transfer device |
| 01/18/1989 | CN2031043U Manpower diaphragm fluid pump with double-working chamber |
| 01/18/1989 | CN1030392A Multi-channel linear concentrate pump |
| 01/12/1989 | DE3721643A1 Oil pump |
| 01/11/1989 | CN2030661U Manpower pumper |
| 01/10/1989 | US4796787 Apparatus for precisely measuring and supplying liquid |
| 01/10/1989 | CA1248411A1 Variable capacity diaphragm pumps |
| 01/04/1989 | EP0297812A1 Pump |