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5417649 |
Fluid transfusing device and method of control therefor
A fluid transfusing device and method of control therefor includes a plurality of pump driving portions and a microprocessor. Each pump driving portion is for driving a pump, and the microprocessor...
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5392645 |
Method and apparatus for flow rate measurement
The average volumetric velocity U m of a fluid flowing within a large industrial flue stack is determined by a combination of measurement and calculation techniques. The temperature, velocity head...
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5385056 |
Pump station flowmeter
A pump station flowmeter is disclosed including a sudden high inflow change detection circuit for eliminating from a series of emptying characteristic calculations taken over a period of time those...
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5384712 |
Energy monitoring system for a plurality of local stations with snapshot polling from a central station
A PC computer monitors the energy consumed at a plurality of local stations placed behind the electrical meter of the utility company for individual billing of the local users, a bidirectional...
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5384709 |
Miniature fluorescent lamp processing apparatus
A automated miniature fluorescent lamp processing station is disclosed which is used to fabricate miniature fluorescent lamps. The system includes: flow-through gas processing to enhance buffer gas...
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5384714 |
Pump controller program
A method for operating a pump controller to pressurize a liquid product line for thermal stabilization during a leak test is accomplished as follows. A microprocessor controlled timer is installed...
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5375454 |
Programmable pump controller
A microprocessor controlled timer is installed in a petroleum service station product dispensing system that includes a pump relay, a pump, a dispenser, and a leak detection monitor. The timer...
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5373454 |
Problem diagnosis system in pressure device control apparatus
A pressure device control apparatus including a pressure source having a pump, and an accumulator connected to the pump and a pressure device, and a pressure detector for detecting the pressure in...
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5351374 |
Method and an apparatus for the continuous crimping of thermoplastic threads
Threads made from thermoplastic materials are textured, in that they are heated by a delivery medium in a delivery channel and conveyed through an orifice into a stuffer box where they are stuffed...
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5349852 |
Pump controller using acoustic spectral analysis
A system for controlling the flow of fluid through a line (3). The system may include first and second valves (A, B; and 6, 7) in the line (3). Between the first and second valves is located a...
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5351199 |
Programmable water treatment controller for progressive flow systems
The Electronic Programmable Water Treatment Controller provides an integrated initiator and sequencer for controlling regeneration of water softening and filtering systems. The controller or...
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5347467 |
Load sharing method and apparatus for controlling a main gas parameter of a compressor station with multiple dynamic compressors
A method and apparatus for maintaining a main process gas parameter such as suction pressure discharge pressure, discharge flow, etc. of a compressor station with multiple dynamic compressors,...
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5343384 |
Method and apparatus for controlling a system of compressors to achieve load sharing
Load sharing is achieved in a multiple compressor system by a program in a computer which sends signals to, and receives data from, a microcontroller located at each compressor. One compressor,...
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5341311 |
Method and apparatus for limiting the capacity of a hydrostatic machine
The present invention relates to a hydraulic secondary control system comprising a hydrostatic machine as a secondary unit which is connected to a pressure line in which an impressed pressure of...
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5335185 |
Automatic level control system and method
An automatic level control system and method provide continuous proportional control of an inlet valve when the level of material in a storage container is between low and high limits. The system...
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5333511 |
Portable controlled air sampler
A portable analyzer for obtaining samples from a monitored environment during different time intervals includes a pump energized by a rechargeable battery pack for drawing gas from the environment...
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5329462 |
Expansion valve control
A control for the expansion valve of an air conditioning system interrupts a decision to deactivate one or more stages of compression and proceeds to calculate a new expansion valve position based...
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5320760 |
Method of determining filter pluggage by measuring pressures
A method to determine differential filter pressure caused by filter pluggage in a high pressure liquid system operated by a computer-operated control valve without the need for a pressure sensor...
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5315530 |
Real-time control of complex fluid systems using generic fluid transfer model
A computer program is disclosed for specifying and solving a fluid transfer problem. Schematic manager means are provided for generating and modifying a pictorial representation of a fluid system...
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5307288 |
Unitary fluid flow production and control system
A fluid flow production and control system includes a variable speed pump defining a fluid flow path therethrough and a fluid flow path outlet, for operating at a speed determined by an input speed...
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5295083 |
Device for dynamically measuring bubble content of flowing liquid
A device for dynamically measuring the bubble content of a flowing liquid is arranged in a conveyance passage for a flowing liquid or provided in a simple bypass for the conveyance passage of the...
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5279263 |
Cascaded steam temperature control applied to a universal pressure boiler
The firing rate and the feedwater flow rate of a universal pressure boiler are controlled using a cascaded steam temperature control system. The secondary superheater outlet temperature comprises...
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5272647 |
Valve diagnostic apparatus and method
A valve test unit (100) for attachment to a value (12) having a fluidly operated stem actuator (20a) responsive to a positioner device (24a). The unit includes a first input port (102) connectable...
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5260875 |
Networked agricultural monitoring and control system
A controller system having a half-duplex serial line as a bus for transferring commands, status and data between all controllers in a planting and spraying system. A bus master connected to the...
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5259909 |
System and method for the checking of a reactive plasma machine
The selection of a formula by an operator on an independent reactive plasma machine using a certain number of reactive gases is checked by making a comparison, at a given instant, between the...
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5255205 |
Method and apparatus for regulating fluid flow
Method and apparatus for regulating the passage of fluid through a chamber or other type of conduit. Fluid passage is terminated when the volume of fluid which has swept through a chamber equals a...
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5251148 |
Integrated process control valve
An integrated process control valve includes a fluid valve body having an inlet for receiving fluid, an outlet for discharging fluid, a fluid flow passage connecting the inlet and outlet, and a...
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5248577 |
Reactant concentration control method and apparatus for precipitation reactions
A method and an apparatus for controlling reactant ion concentration within a precipitation vessel to optimize the reactions occurring therein is disclosed. In one important implementation, the...
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5235526 |
Multi-probed sonde including microprocessor
A sonde is provided which includes a plurality of discrete sensing electrodes of analog output projecting from a housing within which are accommodated a micro-processor and an analog-digital...
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5202813 |
Driver device for a duty solenoid valve
A driver device for a duty solenoid valve comprises a pair of transistors 27 and 31 for controlling the excitation current level flowing through the solenoid 17 of the valve, and a transistor 45...
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5195048 |
System and method for exhausting vapor from a heated pressure chamber
A system and method of exhausting vapor, such as steam, from a pressure chamber following the sterilization phase of a sterilization cycle under superatmospheric pressure conditions are provided....
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5182720 |
Apparatus for controlling and monitoring a lubricating system
An apparatus for controlling and monitoring a lubricating system having analog sensors and switches indicating the status of the lubricating system. An analog-to-digital converter is responsive to...
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5174152 |
Power operated valve stem thrust verification test system
A method and apparatus for inducing a controlled, axial load on the stem of a rising-stem, power-operated valve; and for testing the operator response in driving the valve stem against the load....
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5164074 |
Hydrodesulfurization pressure control
Apparatus for controlling pressure in a combination hydrodesulfurization and reforming process wherein the pressure of a hydrogen-rich gas source from the reforming process is adjusted by...
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5148841 |
Filling apparatus for filling receptacle with metered weights
Filling apparatus for filling receptacles, the apparatus comprising a feed member connected to at least one filling spout via a flow control member connected to an output of a weight processing...
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5148374 |
Desiccant space conditioning control system and method
A system and method for real-time computer control of multi-wheel sorbent mass and energy transfer systems by optimization of calculated mass transfer ratios and measures of system effectiveness...
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5142483 |
Pressure regulating system for positive shut-off pressure controller
A pressure controller rapidly, precisely sets and stabilizes the pressure in a test volume to a target pressure by opening a fast inlet solenoid valve or a fast outlet solenoid valve, and opening a...
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5139548 |
Gas liquefaction process control system
A method for controlling the operation of a liquefied natural gas (LNG) process which utilizes gas turbine-driven refrigeration compressors is disclosed. A feedforward control system compensates...
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5132904 |
Remote well head controller with secure communications port
A gas and oil well controller includes a microcomputer control circuit which can control well production by monitoring well pressure levels, by time limitations, or any combination of the two. The...
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5132918 |
Method for control of a distillation process
A method for automated control of a petroleum distillation column in which signals representing temperatures, pressures and fluid flow rates for selected product streams withdrawn from the column...
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5128881 |
Means and methods for predicting hold time in enclosures equipped with a total flooding fire extinguishing system
Test apparatus and method for determining whether an enclosure containing articles of value susceptible to damage by fire and also by water is able to pass a hold time requirement in the...
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5126934 |
Gas distribution system
An automated gas distribution system for safely and reliably controlling the flow of gaseous fuel to gas appliances. The system implements a "closed-loop" delivery of gas, i.e., the gas is provided...
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5125753 |
Device to measure flow-through and/or quantity of heat
A heat circuit comprises an initial conduit containing a flow medium and a return conduit. A choke element located in a conduit such as the initial conduit of a heat circuit serves to control the...
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5124934 |
Constant feed water device
A constant liquid feeding device of the invention comprises a flow meter for measuring quantity of liquid flowing through a pipe, a valve attached to the pipe, a valve control device attached to...
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5107713 |
Air sampling pump
A microprocessor controlled air sampling pump utilizes a PWM controlled DC electric motor for regulating air flow generated by a diaphragm-type air pump. The control system regulates air flow as a...
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5097432 |
Evaluation method of flow analysis on molding of a molten material
An evaluation method of a flow analysis on molding of a molten material is achieved in a system of performing a flow analysis on an in-mold molten material through breakdown of a molded part model...
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5091844 |
Preemptive constraint control
A means of controlling a process with a multiplicity of measurements dependent on one process parameter, so that only the most constraining of the measurements manipulates the process in such a way...
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5070846 |
Method for estimating and correcting bias errors in a software air meter
A method for estimating and correcting bias errors in a vehicle system which implements iterative prediction and estimation to determine a measure of at least one determinable vehicle engine...
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5067454 |
Self compensating flow control lubrication system
An automatic self compensating flow control lubrication system for continuously supplying the requisite amount of lubricant to at least one component of a drive system. One or more operating...
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5060167 |
Electronic programmable water treatment controller
The Electronic Programmable Water Treatment Controller provides an integrated initiator and sequencer for controlling regeneration of water softening and filtering systems. The controller initiates...
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