| 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) |
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| 01/23/1979 | CA1046899A1 Power transmission |
| 01/02/1979 | US4132506 Pressure and volume-flow control for variable pump |
| 01/02/1979 | CA1045509A1 Dual-speed setting underspeed system |
| 01/02/1979 | CA1045503A1 Control valve |
| 01/02/1979 | CA1045460A1 Pump control assembly having adjustable biasing means |
| 12/26/1978 | US4131393 Fluid pump mechanism |
| 12/26/1978 | CA1044991A1 Hydraulic control valve |
| 12/19/1978 | US4130382 Control system for irrigation pumps |
| 12/19/1978 | CA1044569A1 Control system having override for fluid operated work elements |
| 12/12/1978 | CA1044119A1 Combined unloading and relief valve for pump unloading circuit |
| 12/12/1978 | CA1044118A1 Hydraulic control for variable displacement pumps |
| 12/05/1978 | US4128476 Carrier composition control for liquid chromatographic systems |
| 11/28/1978 | US4127362 Regulating the flow capacity of a positive displacement pump by controlling inlet valve means |
| 11/28/1978 | CA1043226A1 Variable underspeed system linkage |
| 11/28/1978 | CA1043165A1 Interconnected pump control means of a plurality of pumps |
| 11/21/1978 | CA1042855A1 Automatic change-over device for liquid dispensing system |
| 11/14/1978 | CA1042313A1 Variable displacement hydraulic system |
| 11/07/1978 | US4124334 Diaphragm pump |
| 11/07/1978 | US4124333 Externally adjustable load plus pump control assembly |
| 11/07/1978 | US4124331 Automatic control systems for a well pump installation |
| 11/07/1978 | US4124008 Integrated fuel supply system for an internal combustion engine including filter, valve, and pump |
| 10/31/1978 | US4123202 Hydraulic pumping arrangements |
| 10/24/1978 | US4121738 Apparatus for the continuous feeding of plural liquids in separate streams of adjustable quantity and ratio |
| 10/17/1978 | US4120614 Hand bicycle pump with pressure preselection and display means |
| 10/17/1978 | US4120612 Automatic pump for deep wells |
| 10/17/1978 | US4120202 Positive displacement pump |
| 10/17/1978 | CA1040511A1 Dual pump hydraulic control system with predetermined flow crossover provision |
| 10/10/1978 | US4119865 Fluid sensitive shutdown for well pump |
| 10/10/1978 | US4119391 Methods and systems for controlling the operation of means for compressing a fluid medium and the corresponding networks |
| 10/10/1978 | US4119016 Hydraulic control device |
| 10/10/1978 | CA1040051A1 Method and systems for controlling the operation of means for compressing a fluid medium and the corresponding networks |
| 10/03/1978 | US4118799 Apparatus for transferring metered quantities of material from one location to another |
| 10/03/1978 | US4118152 Pump for variable dosing |
| 10/03/1978 | US4118151 Pump device |
| 10/03/1978 | US4118150 Control apparatus responsive to liquid flow |
| 10/03/1978 | US4118149 Output regulation in hydraulic and hydropneumatic systems |
| 10/03/1978 | US4118148 Downhole well pump control system |
| 10/03/1978 | CA1039832A1 Electrical hydrostatic transmission control system |
| 10/03/1978 | CA1039831A1 Oil well pumpoff control system utilizing integration timer |
| 10/03/1978 | CA1039662A1 Auxiliary front wheel drive |
| 10/03/1978 | CA1039572A1 Piston pump assembly having load responsive controls |
| 09/26/1978 | US4116590 Diaphragm pump with pulse piston position responsive work fluid replenishment |
| 09/26/1978 | US4116587 Load plus differential pressure compensator pump control assembly |
| 09/26/1978 | US4116586 Constant fluid level control for machine reservoir |
| 09/26/1978 | US4116577 Flow sensing auxiliary pump by-pass valve |
| 09/26/1978 | US4116364 Dispensing system for low stability fluids |
| 09/26/1978 | CA1039107A1 Piston pump assembly utilizing load pressure control |
| 09/19/1978 | US4115033 Control device for a hydraulic system having at least two pumps |
| 09/19/1978 | CA1038949A1 Motor protection apparatus and method |
| 09/19/1978 | CA1038694A1 Control systems for variable capacity hydraulic machines |
| 09/19/1978 | CA1038693A1 Control devices for reversible flow variable capacity hydraulic machines |
| 09/12/1978 | US4113171 Valve arrangement for limiting torque of a hydraulic motor of a centrifuge |
| 09/05/1978 | US4111607 Linear hydraulic motor |
| 09/05/1978 | US4111003 Hydraulic transmission drive assembly with noise attenuation means |
| 08/29/1978 | CA1037357A1 Load controlled fluid system having parallel work elements |
| 08/22/1978 | US4108167 Dental syringe |
| 08/22/1978 | US4108049 Variable torque fluid device |
| 08/22/1978 | US4107924 Pump upgrading system |
| 08/22/1978 | CA1036900A1 Hydraulic system for electric lift trucks |
| 08/15/1978 | US4106292 Speed and load responsive underspeed actuator for hydrostatic transmissions |
| 08/08/1978 | US4105370 Variable displacement compressor with three-piece housing |
| 07/25/1978 | US4102607 Fluid energy translating device |
| 07/25/1978 | US4102606 Multiple displacement pump system having control sequence for unloading valve |
| 07/25/1978 | US4102149 Variable capacity multiple compressor refrigeration system |
| 07/11/1978 | US4099893 Pump with electrically actuated flow control |
| 06/27/1978 | US4097199 Double acting rack and gear-driven piston pump |
| 06/27/1978 | US4097198 Internal combustion assisted hydraulic engine |
| 06/27/1978 | US4097196 Pilot operated pressure compensated pump control |
| 06/27/1978 | US4096694 Control system for a fluid drive |
| 06/20/1978 | US4095920 Pump control |
| 06/20/1978 | US4095424 Variable hydraulic pump nonlinear control with cam-actuated, adjustably-sequenced secondary control |
| 06/13/1978 | US4094617 Automotive air conditioner compressor |
| 06/13/1978 | US4094145 Underspeed actuator for a hydrostatic transmission having a shunt valve |
| 06/06/1978 | US4093028 Methods of use of cementitious materials and sonic or energy-carrying waves within subsurface formations |
| 05/30/1978 | US4091717 Ring dampener for rotary fluid pressure device |
| 05/30/1978 | US4091674 Air sampling pump |
| 05/30/1978 | US4091617 Hydraulic controller |
| 05/23/1978 | US4090818 Adjustable metering pump |
| 05/23/1978 | US4090371 Monitor and control for refrigeration system |
| 05/16/1978 | US4089623 Compressor intake control |
| 05/16/1978 | US4089170 Power conservation means for variable displacement pump fluid supply system |
| 05/02/1978 | USRE29621 Variable capacity multiple compressor refrigeration system |
| 05/02/1978 | US4087204 Enclosed sump pump |
| 04/25/1978 | US4086653 Pneumatic pump monitor |
| 04/11/1978 | US4084246 Pulse generator |
| 04/11/1978 | US4084165 Fluid-jet writing system |
| 04/11/1978 | US4083661 Pneumatic sewage ejector |
| 04/11/1978 | US4083608 Air compressor lay-over control circuit |
| 03/28/1978 | US4081223 Control arrangement for preventing system overload |
| 03/28/1978 | US4080979 Combined summing and underspeed valve |
| 03/28/1978 | US4080874 Drive for a pair of metering pumps |
| 03/21/1978 | US4080110 Control system for variable capacity gas compressor |
| 03/21/1978 | US4080105 Tire inflator |
| 03/21/1978 | US4080104 Wet-dry vacuum apparatus with pump means for discharging liquid therefrom |
| 03/14/1978 | US4078681 Dual pump hydraulic control system with predetermined flow crossover provision |
| 03/07/1978 | US4078196 Digital valve and pump control system |
| 03/07/1978 | US4077745 Adjustment mechanism for radial-piston pump |
| 03/07/1978 | US4077744 Control systems for variable capacity hydraulic machines |
| 02/28/1978 | US4076461 Feedback control system for helical screw rotary compressors |
| 02/28/1978 | US4076459 Horsepower limiter control for a variable displacement pump |