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8146417 |
Hydraulic accumulator with position sensor
A linear position sensor is installed inside the pressure vessel of a hydraulic accumulator to provide positional information for the moveable element inside of the accumulator. The positional...
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8117908 |
Position measuring device for a fluidic cylinder
The present disclosure relates to a position measuring device for a fluidic cylinder, which includes a cylinder jacket and a piston rod longitudinally movable in the cylinder jacket, wherein the...
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8082115 |
Data acquisition system for condition-based maintenance
Generally, a system and method consistent with the present disclosure may provide a relatively low cost, relatively robust data acquisition and analysis system useful for condition-based...
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8074512 |
Partial stroke testing system coupled with fuel control valve
A system for on-line testing of an emergency shut-off valve includes a first emergency shut-off valve and a control for initiating a test on the first emergency shut-off valve. The system also...
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8069717 |
Method for diagnosing machine fault by analyzing hydraulic fluid
Method for monitoring conditions within a plurality of machines that receive fluid from a common source includes providing a supply line extending from the common source to an inlet at each of the...
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8072343 |
Local emergency isolation valve controller with diagnostic testing and trouble indicator
A local logic solver that operates with a local smart valve controller to control, test and monitor performance characteristics of a local field-mounted emergency isolation valve device, outputting...
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8056390 |
Partial stroke testing with pulsed control loop
Partial Stroke Testing (PST) equipment and methodologies provide PST data for one or more valves by withholding or applying power to the one or more valves for periodic time periods that increase...
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7954372 |
Diagnosis of pitch and load defects
The invention relates to a method, system and computer readable code for diagnosis of pitch and/or load defects of e.g. wind turbines as well as wind turbines using said diagnosis method and/or...
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7954371 |
Condition monitoring of pumps and pump system
A method of monitoring the condition of a pump (10) or at least one component of a system that includes a pump which component or components are not a part of the pump, includes the step of...
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7950294 |
Preventive maintenance diagnostics for valve systems
A valve system includes a valve and a controller that controls the valve. The valve includes a valve body, and a motor configured to deliver a torque to the valve body to cause the valve body to...
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7913558 |
Method for prevention/detection of mechanical overload in a reciprocating gas compressor
Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical...
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7895003 |
Vibration protection in a variable speed compressor
Vibration protection in a compressor system with a variable speed compressor may include operating a variable speed compressor at a plurality of frequencies, measuring a plurality of vibration...
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7869971 |
Safety valve testing
A method of measuring the condition of a safety valve includes measuring a condition parameter that varies with the sealing force of the valve. The condition parameter may be determined from...
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7861582 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7836966 |
Flow sensor and actuator
An arrangement for testing a fire suppression sprinkler system includes a conduit for supplying a flow of fire suppression fluid to at least one sprinkler. A sensor is configured to sense the flow...
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7832990 |
Measurement device
The invention provides a method for determining the angular position of a pump shaft relative to a pump body. The method comprises: providing the pump shaft with a first locating feature; providing...
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7827860 |
Mobile pump testing apparatus
A pump testing apparatus includes a tank mounted on a mobile trailer for testing water pumps associated with fire fighting equipment. Two rotatable draft tubes extend into the tank for drawing...
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7805989 |
Pressure tube for a position measuring system
A position measuring system, especially for hydraulic valve, having a pressure tube to accommodate an armature is provided, whereby the pressure tube is manufactured by deep-drawing. As a result, a...
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7797142 |
Simulating cavitation damage
Methods and systems provide a simulation of cavitation damage. In one implementation, a computer-implemented method simulates a potential for cavitation damage. According to the method, data...
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7775102 |
Method for testing a high-pressure pump in a fuel system
A method for testing the function of a high-pressure pump having a plurality of pump elements, which each define a respective work chamber which is in communication, via a suction valve with a...
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7744354 |
Fluid pump, a fluid-transfer plate and an inductive sensor for a fluid pump
The present invention relates to a fluid pump and a fluid-transfer plate and a sensor for a fluid pump, particularly applicable to linear compressors, for detecting the position of the respective...
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7621179 |
Diagnostic system and method for a valve, especially a check valve of a positive displacement pump
A diagnostic system and method for a valve, especially a check valve of a positive displacement pump, including at least one solid-borne sound sensor is provided. A first value of a parameter of a...
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7584668 |
Monitoring system for valve device
A monitoring system for valve device according to the present invention comprises a semiconductor single crystalline substrate including a bridged circuit and the bridged circuit comprising...
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7574906 |
Determining clutch fill volume in an automatic transmission
A method of determining a fill volume of a clutch of an automatic transmission. A clutch fill sequence is observed from measurement of fluid pressure applied to the clutch, wherein the sequence may...
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7572107 |
Ultra low volume chemical delivery system and method
A mobile, real-time system for delivering an aerosol spray to a treatment area while maintaining the fluid within a closed environment for providing maximum personal protection to the operators...
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7568894 |
Hermetic compressor
A hermetic compressor includes a housing which accommodates a motor and a compressing mechanism, an oil surface sensor mounted to a side wall of the housing, and refrigerating machine oil. The oil...
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7543492 |
Vacuum line and a method of monitoring such a line
The present invention provides a vacuum line for pumping gas from a process chamber, the vacuum line comprising at least: a pump unit comprising a pump body and a motor;a gas exhaust system;first...
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7516656 |
Method and apparatus for diagnosing motor-operated valve
A diagnostic method and apparatus for diagnosing a motor-operated valve capable of continuously measuring a preload of a spring cartridge at low costs, with high accuracy, and with ease, so that...
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7509233 |
Diagnostics for identifying a malfunctioning component in an air compressor system onboard a locomotive
A method and computer program product for identifying one or more malfunctions in a locomotive air compressing system is provided. Some of the malfunctions may be correctable onboard a locomotive,...
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7504961 |
Emergency isolation valve controller with integral fault indicator
A local logic solver operates with a local smart valve controller to control and test a local field-mounted emergency isolation valve device, outputting a local indication of trouble on the device,...
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7497116 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7493809 |
Method and system for measuring deformation in turbine blades
Disclosed is a method for measuring deformation of a turbine blade, the method including identifying at least one measuring point disposed on the turbine blade, retaining information pertaining to...
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7454985 |
Method and device for determining the hydraulic flow rate in a pump driven by a synchronous electric motor
The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of...
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7451644 |
Method for verifying the performance of a test of the functionality of a safety valve
The invention pertains to a method for verifying the performance of a test of the functionality of an actuator (1) with a drive (2) and a valve (3a), where the valve (3a) can be moved by the drive...
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7406864 |
Method for prevention/detection of mechanical overload in a reciprocating gas compressor
Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical...
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7401500 |
Positive displacement pump monitor
A positive displacement pump monitor. The monitor includes a sensor coupled to a housing of a pump for obtaining acoustic data therefrom. A proximity switch may be simultaneously used to keep real...
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7401624 |
Method for monitoring a pipeline and position regulator for a control valve
The invention relates to a method for monitoring a pipeline in order to detect the slow reduction of the free inner cross-section by means of the position of a control valve in the pipeline. When...
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7380452 |
Method of determining fuse parameters for a mechanical fuse in a gas compressor
A method of determining fuse parameters in a reciprocating gas compressor ensures a safe failure upon exceeding an overload limit. Stresses and bolted joint behavior for critical components in...
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7367229 |
Liquid flow regulating device and dynamometer testing device
The present invention relates to a regulating device (1) for control of flow and/or pressure, including a housing (3) enclosing a movable inner member (2) which is provided with a passage...
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7363807 |
Pump testing apparatus and method
A pump testing apparatus includes a support structure having a first passageway having an inlet, an outlet, and an opening for receiving a pressure gauge, and a second passageway having an inlet,...
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7356399 |
Failure determination system for stepless speed changer and failure determination device for start clutch
There is provided a failure determination system for a continuously variable transmission of a belt type, which is capable of determining failure of control valves for performing speed varying...
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7347083 |
System and method for detecting a leak in a hydraulic fluid system
Methods, systems, and articles of manufacture consistent with the present invention provide for detecting a leak in a hydraulic fluid system having a reservoir and a conduit operatively connected...
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7343792 |
Method and apparatus for inspecting operation condition of pump
A circuit is used which includes: first and second channels having first and second input ports, respectively, and a third channel having an end where the first and second channel meet and are...
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7287423 |
Method and device for control of the capacity of a compressor
A method and device for evaluating the capacity of a compressor (1) by air being allowed to flow out from a pressure tank (3) through an opening of known geometry. Following a calculation, the...
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7264573 |
Automatic transmission control apparatus having diagnostic function
An automatic transmission control apparatus controls a gear position by engaging and disengaging multiple frictional elements. A hydraulic pressure detector detects hydraulic pressure applied to...
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7256702 |
Gas supply pressure alarm device
The present invention provides a pressure alarm for use in conjunction with conventional pressure gauge unit systems, as a replacement pressure gauge and alarm, or as a pressure alarm system. The...
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7231820 |
Test stand for hydraulic oscillator using gas-filled shock absorbers
A test stand and related method for testing a hydraulic oscillator cylinder having an oscillating drive includes gas-filled shock absorbers for reacting oscillating movement of the oscillating...
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7204138 |
Hydraulic system health indicator
A method and apparatus for determining the operating health of a hydraulic system are provided. The method may include the steps of determining a plurality of operating parameters of the hydraulic...
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7185536 |
Pressure monitoring technique for downhole tools
The outlet pressure of a pump that fluctuates rapidly, as is typical of high pressure multiplex pumps, is sensed in a pressure line leading from the main flow line to a damping mechanism. The...
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7134353 |
Method and apparatus for determining system integrity for an oilfield machine
In general, in one aspect, the invention relates to a method for determining a system integrity of an oilfield machine operatively coupled to a magnetic drive, wherein the magnetic drive is...
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