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| Number | Title | Issue Date |
| 7188008 | System for controlling the operation of at least one aircraft engine A system for supervising the speed of at least one engine of an aircraft includes three independent information sources determining first, second and third values for an aerodynamic parameter of the aircraft and precision information indicating the precision of thes... | 03/06/2007 |
| 6942446 | Feed pump The invention relates to a feed pump (2) that is configured as a side-channel pump with a plurality of identically designed feed chambers (6, 7) with outlet channels (22, 23) that are disposed opposite one another, thereby eliminating the radial... | 09/13/2005 |
| 6751941 | Foil bearing rotary flow compressor with control valve A fuel delivery system supplies fuel to a turbogenerator or to another heat engine. A fuel delivery system according to the present disclosure may include a fuel compressor, a fuel control valve, and a fuel flow controller. A fuel delivery system may have multiple m... | 06/22/2004 |
| 6158965 | Fluid flow resistance monitoring system Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow quantities in accordance... | 12/12/2000 |
| 5820352 | Method for controlling compressor discharge pressure A method for controlling compressor discharge pressure in a compressor. The compressor comprising a compression module driven by a prime mover, the compression module having a discharge port through which a compressed fluid is discharged with a discharge ... | 10/13/1998 |
| 5762475 | Automatic solenoid control valve calibration A calibration apparatus and method for calibrating a hydraulic control valve connected to an electronic controller. The electronic controller selects control signals and reads corresponding hydraulic pressure outputs of the hydraulic control valve and sel... | 06/09/1998 |
| 5584665 | Liquid drainage system with pneumatic sensor In a frost-free water supply system that drains down to avoid freezing, during non-pumping periods, operation of the system is responsive to pressure changes within the system. A pneumatic relay sensitive to changes in one of the fluid pressures operative... | 12/17/1996 |
| 5452989 | Reverse phase and high discharge temperature protection in a scroll compressor Protective apparatus in a scroll compressor, in the form of a valve assembly, is operative to prevent compressor damage from reverse direction rotation of the scroll compression mechanism or the development of abnormally high discharge gas temperatures. T... | 09/26/1995 |
| 5197859 | Well pump system A well pump system having a motor-driven pump and a pressure tank for delivering water from a source to a utilization point. A sensing device detects a parameter correlated to the rate of flow into and out of the pressure tank. The parameter is utilized t... | 03/30/1993 |
| 4708594 | Method of starting a variable-speed pump turbine or a variable speed pump A method of starting a variable-speed pump turbine or a variable-speed pump driven by a variable-speed generator motor or a variable-speed motor connected to an electric power line in parallel therewith. The generator motor or the motor is first operated ... | 11/24/1987 |
| 4432698 | Compressor having a starting load reducing apparatus A compressor having a starting load reducing apparatus comprises a main compressor body for compressing gas obtained under suction from an intake chamber through an intake valve within a compression chamber, and ejecting the compressed gas through an outl... | 02/21/1984 |
| 4358247 | Oil cooled compressor An oil cooled compressor including a compressor member driven by a motor, an oil tank receiving oil therein and removing oil from the gas discharging out of the compressor member, an oil supplying device for supplying the oil in the oil tank into the comp... | 11/09/1982 |
| 4344741 | Automatic water supply system A water supplying system has a pneumatic tank storing water and confining compressed air therein. The pneumatic tank is adapted to be charged with water by a pump. The supply of compressed air into the pneumatic tank is controlled in such a manner as to m... | 08/17/1982 |
| 4321014 | Constant flow pumping apparatus A multiple pumping chamber pump in which the pressures in at least two of said chambers are equal for at least a portion of their pumping cycles, maintains a constant flow of pumped material by utilizing control means that selectively and continually repl... | 03/23/1982 |
| 4246938 | Vapor collecting system A system for safely and efficiently collecting vapors which might otherwise be released during the storage or transfer of a volatile liquid to and from a storage facility. The system includes a collapsible walled receptacle or reservoir which is connected... | 01/27/1981 |
| 4243349 | Containers for goods In a container of the kind having a rigid impermeable base and a flexible impermeable cover which is sealed to the base, and in which air is evacuated from the region between the cover and the base so that the cover is drawn down onto goods on the base, t... | 01/06/1981 |
| 3994623 | Method and apparatus for controlling a dynamic compressor A method is disclosed for a cascade control of a dynamic compressor to maintain a constant mass flow rate to a process. The method consists of a successive junction of control loops for controlling the speed of rotation, the pressure in the delivery, and ... | 11/30/1976 |
| 3957395 | Method and apparatus for controlling a pump A safety control system for a pump and anti-surge valve protects the pump, the valve and the hydraulic main line system. The valve is controlled by a pressure responsive circuit and, via a limit switch on the valve, controls both the steady state running ... | 05/18/1976 |
| 3951568 | Pump check valve control apparatus A pump check valve control apparatus includes a pump for delivering a fluid to a system. A valve between the pump and the system controls the delivery of the fluid to the system. A valve actuator, signalled by an actuator control, begins to open the valve... | 04/20/1976 |
