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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...
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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 )...
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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 ( 3 a ), where the valve ( 3 a ) can be moved by...
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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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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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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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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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7134328 |
Liquid-ejection testing method, liquid-ejection testing device, and computer-readable medium
A liquid-ejection testing method includes the following steps (A) to (D): (A) A step of making at least two conductive detection members be opposed, in a non-contact state, to a plurality of liquid...
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7131324 |
Partial stroke valve test apparatus
This invention relates to an emergency valve shutdown system having an integrated test facility. The invention provides an apparatus for testing emergency shutdown valves in a process industry...
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7063942 |
System and method to simulate hemodynamics
A system for hemodynamic simulation comprises a vessel having properties of a blood vessel, a reservoir containing a quantity of fluid, tubing connecting the vessel and reservoir, and at least one...
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7047802 |
Pump tester
An automatic pump testing device is configured with controller, a pump testing station, a supply tank and a collection tank. In accordance with one aspect of the present invention, a pump testing...
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7043975 |
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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7038419 |
Compressor drive
A fluid flow control system for an electromagnetic pump having an electromagnetic drive ( 11 ) and a compressor ( 6 ). The control system established a required current in the compressor coils ( 10...
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7017406 |
Pump testing system
A pump testing apparatus is disclosed for testing output characteristics of a fluid flow exiting a pump. The apparatus includes a flow testing structure for testing characteristics of the fluid...
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7013223 |
Method and apparatus for analyzing performance of a hydraulic pump
A method and apparatus for analyzing a hydraulic pump in real-time. A pressure signal is provided representing a discharge pressure of the hydraulic pump, and the pressure signal is decomposed into...
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6976503 |
Diagnostic system and method for a valve
A diagnostic system, for a valve ( 2 ), having a sensor ( 12 ) that senses structure-borne noise and having a device ( 14 ) for evaluating a measurement signal ( 13 ) of the structure-borne noise....
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6931924 |
Method for testing the function of an electrohydraulically controlled automatic transmission
The method for testing the function of an electrohydraulically controlled automatic transmission upon a testing stand by simulation of a vehicle operation provides that the output shaft of the...
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6927681 |
Mixed air amount alarm device
A mixed air amount alarm device is provided which determines the amount of air present in a hydraulic circuit between a hydraulic pressure source and an instrument driven by hydraulic pressure, and...
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6904788 |
Single-body multiple sensing device
A sensor component that may be used in conjunction with a filter module may include a plurality of sensor packages. The latter, in turn, may incorporate one or more micro-electromechanical systems...
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6880567 |
Over-pressure protection system
An over-pressure protection system having a conduit section extending between a pressure reduction valve and a low-pressure fluid handling system, a shut-off valve provided with an actuator...
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6877947 |
Method and apparatus for early fault detection in centrifugal pumps
A method and apparatus for early fault detection in a centrifugal pump equipped with a balancing device, where the balancing device has an axial gap and optionally at least one radial gap through...
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6865935 |
System and method for steam turbine backpressure control using dynamic pressure sensors
A system ( 10 ) controlling operation of a steam turbine (T). Sensors ( 12 ) measure dynamic pressure level variations in a stage (S 1 -Sn) of the turbine. A signal (Ps) from a sensor is converted...
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6862940 |
Portable electro-hydraulic test bed apparatus with analog control station and methodology
A portable electro-hydraulic test bed apparatus with analog control station and methodology for performing hands-on materials and components testing. A portable test bench is provided having a...
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6862547 |
Control device test system with a remote switch activation
A control device test system including an electrical switch and a device controller, wherein the device controller has a processor, a memory coupled to the processor, and an auxiliary input coupled...
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6850850 |
Fluid filter flowmeter self-generating power source system and method
A flowmeter for metering the volume of flow of a fluid through a filter, to enable the level of filter usage to be indicated. A preset level of metered fluid flow volume indicates a corresponding...
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6835049 |
Occlusion detector for rotary peristaltic pump
The invention concerns a detector for detecting malfunction in a peristaltic pump wherein a flexible tubing ( 44 ) containing a fluid is locally compressed against a support part by rollers ( 32 )...
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6829551 |
Test device for filter systems, method for testing filter systems, and computer program therefor
A test device ( 10 ) for filter systems comprising at least two test units ( 14 ), a management unit ( 12 ) for managing and controlling the at least two test units ( 14 ), and signal links via a...
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6823742 |
Piezoelectric transducer assemblies and methods for their use
Piezoelectric transducer assemblies that are useful for the monitoring of the gas output from a gas driven pump, wherein the assembly is not an integral part of the input or output flow stream of...
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