| Patents for F04B 49 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups (22,036) |
|---|
| 01/25/1977 | US4004419 Apparatus for converting a hydraulic pressure signal to a mechanical motion |
| 01/18/1977 | US4003679 High pressure pump with metering |
| 01/04/1977 | US4000790 Lubricant proportioning pump |
| 12/28/1976 | US3999892 Interconnected pump control means of a plurality of pumps |
| 12/28/1976 | US3999890 Enclosed sump pump |
| 12/21/1976 | US3998570 Air conditioning compressor |
| 12/21/1976 | US3998568 Pump-off control responsive to time changes between rod string load |
| 12/14/1976 | US3997282 Pump pressure control device |
| 12/14/1976 | US3996761 Reciprocating compressor |
| 12/07/1976 | US3995974 Internal combustion assisted hydraulic engine |
| 12/07/1976 | US3995973 Variable displacement hydraulic system |
| 11/30/1976 | US3995199 Compressor motor protection |
| 11/16/1976 | US3992130 Sump pump system and pressure responsive switch assembly therefor |
| 11/09/1976 | US3990236 Load responsive pump controls of a fluid system |
| 11/02/1976 | US3989993 Drive and control mechanism for electrically operated reciprocating apparatus |
| 11/02/1976 | US3989414 Pump for servo steering |
| 11/02/1976 | US3988892 Regulating arrangement for hydraulic pumps |
| 10/26/1976 | US3987622 Load controlled fluid system having parallel work elements |
| 10/19/1976 | US3986795 Fuel injection assembly |
| 10/19/1976 | US3986357 Control device for a driving unit comprising an internal combustion engine and a hydrostatic transmission |
| 10/12/1976 | US3985472 Combined fixed and variable displacement pump system |
| 10/12/1976 | US3985469 Output control device for a hydraulic pump of the variable displacement type |
| 10/12/1976 | US3985467 Constant pressure pump |
| 10/12/1976 | US3985019 Liquid chromatography system with solvent proportioning |
| 10/12/1976 | US3984978 Auxiliary front wheel drive |
| 09/28/1976 | US3982855 Radial piston pump |
| 09/28/1976 | US3982470 Control system for axial piston fluid energy translating device |
| 09/21/1976 | US3981632 Metering pump |
| 09/21/1976 | US3981624 Sonic or energy wave generator and modulator |
| 09/21/1976 | US3981621 Bearing wear detection devices |
| 09/21/1976 | US3981620 Pumping apparatus |
| 09/21/1976 | US3981618 Method and apparatus for preventing pump cavitation |
| 09/21/1976 | US3981319 Cycling air volume control |
| 09/14/1976 | US3980231 Proportioning sprayer device |
| 08/31/1976 | US3978382 Control apparatus for two-speed, single phase compressor |
| 08/31/1976 | US3977809 Controlled discharge pressure pump for pumping liquids |
| 08/31/1976 | US3977190 Pump speed detecting device |
| 08/24/1976 | US3976989 Electronic pressure cycle indicator |
| 08/24/1976 | US3976401 Pump for abrasive slurries and the like |
| 08/24/1976 | US3976400 Gradient pump apparatus |
| 08/24/1976 | US3975910 Variable volume liquid pumping system |
| 08/17/1976 | US3975116 Pressure responsive fluid valve assembly |
| 08/17/1976 | US3975115 Pump control system |
| 08/17/1976 | US3974715 Null and gain adjustment mechanism for hydrostatic pumps and motors |
| 08/17/1976 | US3974714 Pump driving mechanism with adjustable stroke |
| 08/10/1976 | US3973877 Automatic pumping device |
| 08/10/1976 | US3973472 Throttle control mechanism for an engine |
| 08/03/1976 | US3972654 Diaphragm pump boiler feed water system |
| 08/03/1976 | US3972652 Variable volume clearance chamber for compressors |
| 08/03/1976 | US3972648 Well controller and monitor |
| 08/03/1976 | US3972647 Screen for intake of emergency sump pump |
| 08/03/1976 | US3972345 Pilot operated relief valve |
| 08/03/1976 | US3972187 Hydraulic transmission |
| 07/20/1976 | US3970413 Fluid distribution apparatus and method |
| 07/20/1976 | US3969986 Radial piston pump |
| 07/20/1976 | US3969896 Transmission ratio control system |
| 07/13/1976 | US3969041 Shut-off valve for automotive fuel flow |
| 07/13/1976 | US3969038 Pressure regulator for an adjustable pump |
| 07/13/1976 | US3968735 Control device for a fluidic-control jack |
| 07/13/1976 | US3968650 Fluid feed device comprising a constant cylinder capacity pump and at least one variable cylinder capacity pump |
| 07/06/1976 | US3967920 Horticulture spraying systems |
| 07/06/1976 | US3967634 Flow ratio control system |
| 07/06/1976 | US3967606 Fuel pump for internal combustion engines |
| 06/29/1976 | US3966360 Continuous-flow fluid pump |
| 06/29/1976 | US3966358 Pump assembly |
| 06/29/1976 | US3965983 Sonic fluid level control apparatus |
| 06/29/1976 | US3965758 Controllable pumps |
| 06/29/1976 | US3965736 Clamp-on transducer for well unit |
| 06/22/1976 | US3964444 Control circuit for an electromotor |
| 06/15/1976 | US3963384 Erosion-preventing device for a lift-and-force pump |
| 06/15/1976 | US3963378 Part throttle control -- pump override |
| 06/15/1976 | US3963376 Automatic water powered sump drainer |
| 06/15/1976 | US3963375 Time delayed shut-down circuit for recirculation pump |
| 06/15/1976 | US3963374 Well pump control |
| 06/15/1976 | US3963039 Hydraulic installation with means for storing energy |
| 06/08/1976 | US3961862 Compressor control system |
| 06/08/1976 | US3961558 Positive-displacement hydraulic motor |
| 06/01/1976 | US3959969 Apparatus for regulating the pressure and rate of flow of fluid supplied by a variable-delivery pump |
| 05/25/1976 | US3958902 Electromagnetic pump |
| 05/25/1976 | US3958898 Pump control systems |
| 05/18/1976 | US3958092 Apparatus for discriminating between liquid and gaseous flow |
| 05/18/1976 | US3957399 Diaphragm pump |
| 05/18/1976 | US3957396 Pressure control in hydraulic systems |
| 05/18/1976 | US3957395 Method and apparatus for controlling a pump |
| 05/18/1976 | US3957075 Flow-sensitive pressure limiting valve for hydraulic equipment |
| 05/11/1976 | US3955477 Hydrostatic piston machine having a guide for laterally guiding a cylinder block pintle |
| 05/04/1976 | US3954353 Axial piston pump |
| 04/27/1976 | US3953777 Control circuit for shutting off the electrical power to a liquid well pump |
| 04/27/1976 | US3953154 Pressure control and unloader valve |
| 04/27/1976 | US3953153 Multiple displacement pump system and method |
| 04/27/1976 | US3953152 Regulated fluid pump |
| 04/20/1976 | US3951574 Reciprocating plunger type pump with stroke adjustment means |
| 04/20/1976 | US3951569 Air conditioning compressor |
| 04/20/1976 | US3951568 Pump check valve control apparatus |
| 04/20/1976 | US3951209 Method for determining the pump-off of a well |
| 04/13/1976 | US3949649 Adjusting apparatus for hydraulic pumps or motors |
| 04/06/1976 | US3948147 Hydraulic system with air-venting arrangement |
| 03/30/1976 | US3947194 Apparatus for damping the pressure increase of hydrostatic drives |
| 03/30/1976 | US3946551 Pumping and metering system |
| 03/23/1976 | US3945772 Pumps for transferring small quantities of dosed liquids |