Matches 101 - 150 out of 213 < 1 2 3 4 5 >
Match Document Document Title
5076890 Method for pulp quality control and regulation  
The present invention relates to a method of qualitative and quantified monitoring of the instant local physical state of a substantially incompressible fluid material such as a liquid or pasty...
5064348 Determination of well pumping system downtime  
In a liquid well pumping system which is provided with a downtime between pumpoff cycles, the method of determining the maximum downtime includes running a plurality of tests to determine the...
5054977 Self plugging blind rivet  
A structural splitting self plugging pull mandrel blind rivet includes a tubular rivet body and a T-mandrel disposed therein. A locking plug is provided on the T-mandrel and includes a locking...
5040943 Furnace blower housing and mounting bracket  
An exhaust fan blower is provided for use in induced draft furnaces. An integrally molded fan housing and exhaust conduit is provided of a material impervious to the corrosive effects of exhaust...
4955785 Fan structure with flow responsive switch mechanism  
The problem of providing a simple, small, lightweight and reliable flow responsive switch mechanism (32) in a fan structure, such as for aerospace applications, is solved by providing a housing...
4913625 Automatic pump protection system  
An automatic pump protection system is comprised of a plurality of sensors for measuring process parameters indicative of a loss of pump suction or of pump motor failure. Analysis of the parameters...
4910682 Method of calibrating and determining the rotational and fluid delivery velocities of a peristaltic fluid pump  
A peristaltic pump controller provides control of a positive displacement pump as either an uncalibrated or calibrated flowmeter, or a calibrated dispenser. A calibration constant is calculated,...
4887628 Fluidic apparatus  
A vortex amplifier functions as a choke valve to control flow in a flow line from, for example, a gas or oil well. The vortex amplifier is arranged in the flow line such that flow passes radially...
4883409 Pumping apparatus for delivering liquid at high pressure  
A pumping apparatus for delivering liquid at a high pressure, in particular for use in liquid chromatography, comprises two pistons (10, 20) which reciprocate in pump chambers (7,18), respectively....
4874294 Oil well pump control  
An oil well pump control for regulating operation of a pumping apparatus such as a pumping jack through a timing system which is actuated by the fluid pulses or surges that result from the pumping...
4867646 Liquid evacuation system  
Liquid is removed from a remote location, with control of the system responsive to the supply of the liquid to be removed. Control is accomplished without the need for electrical devices at the...
4858645 Lubricant delivery system including flow measuring  
A lubricating delivery system includes a positive displacement lubricant pump and fluid flow measuring means for monitoring the output of the pump. The pump is a miniature injection pump and the...
4859151 Pump-off control for a pumpjack unit  
A pump-off control for a pumpjack unit. The pumpjack unit has a flow line therefrom connected to a tank battery. A control device is connected in the flow line so that all of the production must...
4797834 Process for controlling a pump to account for compressibility of liquids in obtaining steady flow  
An apparatus and method controls a dual piston pump for a liquid chromatography system so as to pump a flow of solvent through the liquid chromatography column at a constant flow rate and with a...
4797067 Pumping system with desilting arrangement  
Pumping system with a desilting arrangement having a bidirectional water pump disposed in a housing which has a pump inlet and a pump outlet. The system also has a silt blow-out pipe with a...
4795314 Condition responsive pump control utilizing integrated, commanded, and sensed flowrate signals  
A pump control apparatus including a variable speed pump controllable in response to a pump drive signal, a signal generator generating a commanded flowrate signal indicating desired flowrate of...
4781536 Low-flow pump-off control  
A low-flow pump-off control device for deactivating a motor for a pump during conditions when a rate of supply of a source of fluid to be pumped by the pump is insufficient includes: a pipe section...
4775481 Apparatus and method for liquid chromatography  
To stabilize flow rate in a single-stroke, syringe-type high pressure pump at a constant value after turn-on, a control system increases the pump speed until equilibrium conditions are reached and...
4756670 Detecting method and apparatus using heat sensitive devices  
This invention relates generally to the sensing of phenomena using heat sensitive devices. More particularly, the invention relates to an improved method and system wherein the ratio of the...
4747828 IV fluid line occlusion detector  
A detector for determining when an occlusion has occurred in the fluid line of an IV administration set comprises means associated with an IV infusion pump to determine the resistive force exerted...
4613074 Process for controlling a high-pressure cleaner and high-pressure cleaner for implementing said process  
In a high-pressure cleaner, in order to control additional equipment, such as chemical doser or burner, from a hand spray gun without any special control lines, it is proposed to connect a second...
4595342 Device for the control of a fluid pressure of a turbomachine engine and support for a pressure pick-off  
An arrangement for controlling the pressure of a fluid being pumped by a pump driven by a drive means. The pump pressure is measured by a pressure sensor and transformed into an electrical signal...
4593524 Control device for a power-driven air pump for a car  
A control device for a power-driven pump used for a car comprising a d.c. motor, an air pump driven by the d.c. motor and an exhaust device for reburning and purifying exhaust gas from an engine by...
4583683 Air conditioning system utilizing a Karman vortex detecting type flowmeter  
Fluid flowmeter, air conditioning system and method of controlling the air conditioning system which includes a Karman vortex generator, ultrasonic transmitter and receiver apparatus and networks...
4568248 Additive feedback monitoring system  
In accordance with the present invention, the actual volume of a liquid chemical additive used to treat fuel is measured by an additive flow transducer so that a desired mix ratio can be...
4527953 Pump unit for sampling air  
An improved pump unit for sampling air that operates at a constant air flow rate in the range of 5-5000 cc/min. having a filter for removing particles or vapors from the air stream, an air...
4526513 Method and apparatus for control of pipeline compressors  
After the pumping station set points for a desired pipeline operation are calculated, they are used by process controllers at the individual pumping stations to control operations at the station....
4507053 Pump off control  
A pump off control apparatus for a pump assembly located downhole in a wellbore. The control apparatus prevents the pump motor from running for a finite time interval whenever a pump off condition...
4492525 Pneumatic fire pump pressure controller  
An electro-pneumatic variable control for fire pumper engine and pump discharge.
4480960 Ultrasensitive apparatus and method for detecting change in fluid flow conditions in a flowline of a producing oil well, or the like  
Transient change in heat flux due to ultrasmall variation in flow conditions, say from flow-to-no flow within a flowline of a wellhead connected to an oil well penetrating an earth formation, is...
4389163 Pressure booster system for fluids  
A pressure booster system for fluids using one or more injectors for delivering a relatively low pressure output flow of fluid. A fluid accumulator receives the output from one or more injectors. A...
4380236 Fluid pump  
Apparatus for the administration of solution to a patient at a precisely controlled rate. A length of flexible, collapsible tubing filled with the solution and connectable at one end to a conduit...
4370098 Method and apparatus for monitoring and controlling on line dynamic operating conditions  
Disclosed are a method and system for monitoring and controlling the normally inaccessible dynamic operating conditions, such as well fluid head and motor terminal voltage, of a well pumping...
4334370 Method of transporting flowable media of changing consistencies  
An arrangement for directly transporting manganese nodules obtained in ocean bottom mining, entrained in carrier water, to a ship includes a riser conduit and a submersible motor-pump arrangement...
4329120 Pump protector apparatus  
A pumping system protection device which continuously monitors the rate of flow from a pump, which provide pressurized liquid from a pump to a tank, through a check valve, such as can be used in a...
4311436 Fluid pressure and velocity sensing apparatus  
Apparatus for measuring fluid pressure and velocity, and in particular for maintaining an aspirator air velocity constant under varying atmospheric conditions. A precisely controlled air velocity...
4309871 Control apparatus for controlling surge in air compressor-driven system  
In an air compressor-driven system, wherein compressed air and fuel are combined in a combustion chamber to produce hot gas for driving a turbine which then rotates the air compressor, surge is...
4307760 Pressure-regulated mold-filling apparatus for thermosetting material  
Flowable thermosetting synthetic-resin material is fed to a plurality of pressurizable buffer compartments and then to a plurality of respective molds having differently dimensioned mold cavities....
4257746 Dosimeter having a low air flow rate  
An improved dosimeter having a low air flow rate for monitoring working areas in which air is pumped through the dosimeter at a controlled constant low rate of flow and any particles or vapors in...
4234007 Automatic liquid flow control device  
An automatic liquid flow control device for use in the application of building insulation foam is disclosed comprising flow meters to measure the flow of resin and foaming agent through conduits to...
4212590 Method and apparatus for the continuous regulation of rotary hydrodynamic pumps  
A regulator for controlling the speed of a rotary hydrodynamic pump algebraically sums a preselected value with a signal related to the pump speed and raised to a predetermined power. A root of the...
4209258 Automatic continuous mixer apparatus  
Mixing apparatus comprises a continuous mixer supplied with ingredients by a plurality of speed controlled motor driven pumps and having flow meters providing signals representative of ingredient...
4191511 Compressor control  
Control of the main gas stream from a compressor is accomplished by automatically adjusting the amount of gas vented from the compressor output by a variable relief valve or other flow restriction...
4177649 Surge suppression apparatus for compressor-driven system  
Surge in a compressor-driven system, such as a refrigeration system, is precluded by sensing an appropriate parameter, for example the gas flow at the compressor discharge outlet, and developing...
4165818 Portion controlled frozen food dispenser with pump control  
The specification discloses a system and process for producing discrete chilled products having preselected weights from a semi-fluid mixture. The semi-fluid mixture is pumped along a distribution...
4119865 Fluid sensitive shutdown for well pump  
A system for disconnecting an oil well pump driving apparatus from a circuit in the absence of a liquid or the like in a pipeline connected from the pump. A vertical member having a cavity in...
4118149 Output regulation in hydraulic and hydropneumatic systems  
Apparatus for regulating the output of a system feed with a fluid medium irrespective of the instantaneous pressure in the system comprising a regulating device including an adjustable throttling...
4118148 Downhole well pump control system  
Operation of a downhole reciprocating oil well pump is controlled by displacement of the fluids discharged from the pump into a displacement cell closed at its upper end. Gas is trapped in the...
4063824 Chemical dosimeter having a constant flow air sampling pump  
An improved chemical dosimeter for individual use which collects on a filter particles or vapors present in an air stream which is being pumped through the dosimeter at a constant rate, the...
4056333 Intravenous feeding pump failure alarm system  
The present invention relates to a failure alarm system for an intravenous feeding pump in which the pumping force is secured by the projection of a plunger into a chamber filled with the liquid to...
Matches 101 - 150 out of 213 < 1 2 3 4 5 >