| Patents for F04B 13 - Pumps specially modified to deliver fixed or variable measured quantities (2,234) |
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| 10/16/1991 | EP0451942A1 Double-acting positive displacement pump |
| 10/12/1991 | CA2037591A1 Double-acting positive displacement pump |
| 10/08/1991 | US5055008 Proportionating pump for liquid additive metering |
| 10/02/1991 | EP0449686A1 Telescopic mobile equipment for driving a reciprocating pump |
| 10/02/1991 | CN1014140B Multi-channel linear concentrate pump |
| 09/30/1991 | CA2038805A1 Telescopic moving part for reciprocating pump driving |
| 09/24/1991 | CA1289527C Variable capacity swash plate compressor |
| 09/04/1991 | CN2084112U Rotary axle type enamel supply measuring pump for wire anameling machine |
| 09/03/1991 | US5044889 Phase adjustable metering pump, and method of adjusting the flow rate thereof |
| 08/07/1991 | CN1053664A Supervisory control method and apparatus for micropump |
| 07/17/1991 | EP0437261A2 Pump with multi-port discharge |
| 07/17/1991 | EP0437131A1 Precompression hand pump for the spraying of a liquid, in particular a perfume |
| 07/16/1991 | US5032058 Calibrated fluid injection system |
| 07/11/1991 | CA2033518A1 Prepressurized manual pump for spraying of a liquid, a perfume for example |
| 07/10/1991 | EP0436512A2 Valveless positive displacement pump |
| 06/26/1991 | EP0433969A1 Arrangement on a pump unit |
| 06/26/1991 | EP0433649A1 Fluid metering pump |
| 06/20/1991 | DE3941430A1 Measurement and dispensing appts. for various media - has piston unit with medium reservoir and displacement sensor feeding valve controller |
| 06/11/1991 | US5022556 Programmable volume dispensing apparatus |
| 06/04/1991 | US5020980 Valveless, positive displacement pump including hinge for angular adjustment |
| 05/28/1991 | US5019127 Dosing a liquid |
| 05/21/1991 | US5017105 Metering pump |
| 05/14/1991 | US5015157 Pump with multi-port discharge |
| 04/21/1991 | CA2027222A1 Calibrated fluid injection system |
| 03/06/1991 | EP0415259A1 Dosing pump |
| 02/05/1991 | US4990066 Metering pump |
| 01/29/1991 | CA1279616C System for dispensing precisely metered quantities of a fluid and method ofutilizing the system |
| 01/24/1991 | DE3922660A1 Multiple metering dispenser for liquids - has common block with series of units of cylinder, its plunger with stroke adjusted to vol. required inlet and outlet bores |
| 12/27/1990 | EP0403813A1 Method and apparatus for the dosed filling of liquid and pasty products, especially of foodstuffs or the like |
| 12/27/1990 | CA1278358C Process for determining the exact output of dispensing pumps |
| 12/13/1990 | WO1990015249A1 Variable displacement pump |
| 10/23/1990 | US4964985 Liquid chromatograph |
| 10/19/1990 | WO1990012960A1 Pump and metering apparatus |
| 10/19/1990 | CA2053319A1 Pump and metering apparatus |
| 10/16/1990 | CA1275199C Constant suction pump for high performance liquid chromatography |
| 07/17/1990 | US4941809 Valveless positive displacement metering pump |
| 07/17/1990 | US4941808 Multi-mode differential fluid displacement pump |
| 07/10/1990 | US4940035 Internal combustion engine fuel |
| 06/05/1990 | US4930991 Piston pump for high performance liquid chromatography |
| 05/15/1990 | US4925371 Flow rate control for a variable stroke pump |
| 04/25/1990 | EP0364823A1 Device for pneumatically dispensing concrete hydromechanically transported in a dense flow |
| 04/18/1990 | CA2000952A1 An apparatus for pneumatically discharging concrete |
| 04/10/1990 | US4915591 Reciprocating pump and control using outlet valve position sensors |
| 04/03/1990 | US4913624 Low pulsation displacement pump |
| 02/14/1990 | EP0354484A1 Dosing pump |
| 01/03/1990 | EP0349264A2 Multi-mode differential fluid displacement pump |
| 12/19/1989 | US4887870 Feed pump for brake systems |
| 11/28/1989 | US4883409 Pumping apparatus for delivering liquid at high pressure |
| 11/07/1989 | CA1262664A1 Method and apparatus for supplying feedwater to a forced flow boiler |
| 10/04/1989 | EP0334994A1 Reciprocating type fluid delivery pump |
| 09/26/1989 | CA1260761A1 Metering pump |
| 09/12/1989 | US4865525 Metering pump |
| 09/12/1989 | US4865524 Variable capacity compressor |
| 06/21/1989 | EP0321339A1 Flow rate regulating system for an alternating dosing pump |
| 06/15/1989 | DE3740857A1 Device for the automatic dosing and mixing of reactive resin components |
| 06/13/1989 | US4838297 Apparatus for injecting a fluid into a network |
| 05/24/1989 | EP0316537A1 Dosing pump |
| 05/17/1989 | EP0316164A1 A variable flow rate pump for fluid |
| 05/09/1989 | US4827875 Dilution valves |
| 05/03/1989 | EP0313774A1 Dual storing and transporting unit for two separated components of a two-component mixture |
| 05/02/1989 | US4826046 Multi-channel linear concentrate pump |
| 04/25/1989 | US4823992 Metering device for feeding liquids to a mixing head |
| 04/12/1989 | EP0310642A1 Standard gas flow apparatus |
| 04/05/1989 | EP0309596A1 Pumping apparatus for delivering liquid at high pressure |
| 04/04/1989 | US4818189 Variable capacity vane compressor |
| 03/15/1989 | CN1031744A Linearly-adjusted and non-circular gear driven advection pump |
| 03/14/1989 | US4811624 Hydraulically actuated stroke adjusting device |
| 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 |
| 02/28/1989 | US4808092 Precision reciprocating metering pump |
| 02/22/1989 | EP0303861A1 Dispersing apparatus for mineral oil products |
| 02/22/1989 | CN2033065U Frequency modulation topping-up pump |
| 02/21/1989 | US4806079 Apparatus for simultaneously pumping a plurality of liquids |
| 02/15/1989 | EP0303220A2 Low pulsation displacement pump |
| 01/31/1989 | US4801248 Variable capacity swash plate compressor |
| 01/26/1989 | DE3744754A1 Drum pump arrangement for viscous media |
| 01/18/1989 | CN1030392A Multi-channel linear concentrate pump |
| 12/14/1988 | EP0295123A2 Multi-channel linear concentrate pump |
| 12/13/1988 | US4790732 Driving means of the triple-cylinder plunger pump |
| 11/22/1988 | US4785713 Driving device, in particular for a proportioning pump of the piston-flowmeter type |
| 11/17/1988 | WO1988009006A1 Liquid injection apparatus having an external adjustor |
| 11/17/1988 | EP0290451A1 Device for injecting a fluid into a network |
| 11/09/1988 | EP0290048A2 Proportioning pump for viscous liquids |
| 10/25/1988 | US4779761 Beverage dispenser pump system with pressure control device |
| 10/11/1988 | US4776771 Metering pump |
| 10/06/1988 | WO1988007712A1 Standard gas flow apparatus |
| 09/28/1988 | EP0283832A2 Device for taking out and precisely dispensing fluid media |
| 09/27/1988 | CA1242357A1 Mixing pump for transport and effective mixing (homogenization) of two or more liquids (gases) with a constant, but adjustable, ratio of the liquids |
| 08/31/1988 | EP0280388A1 Liquid dilution valve |
| 08/18/1988 | DE3703929A1 Device for pumping two viscous or pasty substances in a predetermined proportion from two reservoirs to one or more nozzles |
| 08/17/1988 | EP0278739A1 Constant suction pump for high performance liquid chromatography |
| 07/12/1988 | US4756329 Devices for the injection of an additive product metered into a main fluid |
| 06/28/1988 | US4753581 Constant suction pump for high performance liquid chromatography |
| 06/08/1988 | EP0270130A2 Precision dosing pump for liquids |
| 05/17/1988 | US4744732 Variable capacity vane compressor |
| 05/04/1988 | EP0266223A1 Beverage dispenser pump system with pressure control device |
| 04/27/1988 | EP0264934A2 Low pulsation pump device |
| 04/12/1988 | US4737081 Variable capacity vane compressor |