Matches 151 - 200 out of 420 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5442671 Circuit and method of detecting actuator movement  
An actuator movement detector (10) indicates proper engagement of a solenoid (12). The current flowing through a field coil (16) is converted to a sense voltage that exponentially increases and...
5435177 Apparatus and method for testing spring packs of motor operated valves  
An apparatus, for testing a spring pack of a valve operator, includes a hollow housing with a coupling for attaching to the valve operator. A slider is received within the housing and moves therein...
5433245 Online valve diagnostic monitoring system having diagnostic couplings  
A motor operated valve monitoring system utilizes two diagnostic couplings with quick disconnect electrical connectors. One coupling is used for monitoring switch actuation on the motor operated...
5432436 Method for remotely approximating the stem thurst of motor operated valves  
A method is disclosed for approximating the stem thrust during the operation of a motor operated valve combination including a valve having a valve stem, a valve disk, a valve seat, and a motor...
5430368 Method for remotely approximating the stem thrust of motor operated valves  
A method for approximating a stem thrust difference during the operation of a motor operated valve combination includes the steps of sensing the stem thrust of the motor operated valve combination...
5426975 Method and apparatus for determining the total flow rate in a ventilation installation  
A method and apparatus for determining the total flow rate of air flowing through a ventilation installation with a free suction fan (15) is described. The flow rate or a corresponding pressure is...
5425270 Valve diagnostic environmental data acquisitioner  
A data acquisition system (1) by which environmental parameters proximate to plant installed valves (2) may be monitored, recorded and correlated with other valve operating data. The system...
5411384 Scroll compressor having upper and lower bearing housings and a method of testing and assembling the compressor  
A scroll type machine is disclosed which is designed to enable it to be fully assembled prior to being installed in a hermetic shell and incorporates an improved mounting arrangement for the...
5388965 Sludge pump with monitoring system  
The present invention is a sludge pump system which includes a means for monitoring operation of a sludge pump. The sludge pump includes a material cylinder and a piston moveable in the material...
5383351 Pump seal test apparatus and method  
Centrifugal pumps and similar fluid handling machines may be tested to detect leakage from shaft seal assemblies by an apparatus which includes a support flange for supporting a section of the pump...
5365769 Method for verifying the correct operation of a safety valve of an oil well  
A method of verifying that a safety valve, normally biased to a closed position and opened by hydraulic pressure applied thereto by a fluid supplied at a constant flow rate, is operating correctly...
5365459 Continuous stack flow rate monitor  
A stack flow rate measurement system and method utilizes the measured temperatures and pressures of the flue gases in a stack and the measured power supplied to a fan to calculate and display flue...
5357800 Method for air testing hydraulic brake components  
A production functional test for hydraulic brake control and traction control units which utilizes compressed air as a test medium. Compressed air is applied to an external port of a hydraulic...
5337262 Apparatus for and method of testing hydraulic/pneumatic apparatus using computer controlled test equipment  
Automatic test equipment for testing hydraulic/pneumatic devices which devices are included within the test system as well as those which may be attached to the test system. Object oriented...
5329956 Pneumatic operated valve stroke timing  
A non-intrusive method for timing the full operational motion of a valve plug (26) in an electrically actuated, pneumatically operated valve (10). An actuation signal is sent to the valve actuator...
5327783 Method of monitoring heat exchanger vibrations  
A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect...
5320138 Fire sprinkler testing system and control panel  
The invention herein described relates to devices used to test the integrity of fire sprinkler systems. The present device incorporates a control panel which allows a single operator to...
5319988 Assembly for checking spring patterns  
An assembly including a tray-like member having a multiplicity of parallel adjacent elongate troughs. Each of the troughs has a major portion adjacent a first edge, and a minor portion adjacent a...
5297442 Method to determine liquid flow rate for manifold feed nozzles  
The present invention is a method for determining the mass flow rate of liquid from each of the nozzles on a manifold of nozzles. A method is demonstrated to provide an absolute calibration technique.
5275036 Relief valve testing apparatus  
An apparatus for testing the opening pressure of a relief valve has a clamp removably secured to the bonnet of a relief valve. The clamp has four upstanding bolts slidably held in T-shaped slots....
5272909 Method and device for testing venous valves  
A method and device for testing artificial or natural venous valves. The device comprises (a) a fixture for mounting a sample valve on a liquid flow path, (b) a muscle pump component and/or (o)...
5272917 Checking apparatus for injection or infusion-type pumps  
The checking apparatus for injection- or infusion-type pumps comprises a glass piston syringe, a linear potentiometer whose spindle is rigidly connected to the piston of the glass piston syringe, a...
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...
5269344 Supply valve and arrangement for fire suppression water sprinkler system  
A supply valve and an arrangement for supplying, testing and draining a fire suppression water sprinkler system includes a supply valve which has a valve member with at least first, second and...
5263367 Method and apparatus for determining delivery amounts and rates of pumps in the medicotechnical field  
A method to determine the delivery rate and delivery volume per unit of time of a liquid involves connecting one end of a sealed tube to the outlet of the pump, with the other end being provided...
5261437 Method and apparatus for monitoring and analyzing recirculation control system performance  
A method and apparatus for monitoring and analyzing the performance of a recirculation control system are disclosed. According to the invention, the pressure of the liquid passing through the...
5257545 Method and apparatus to monitor check valves  
A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect...
5257535 Stem stress measuring instrument for valve operating system  
A valve stem stress measuring instrument is provided for measuring axial thrust developed on a valve operating system. In a quarter turn valve, or a butterfly, a valve stem stress instrument...
5248940 Apparatus for measuring changes in radial and/or axial position of a rotor in a drive system including an EMF producing stationary conductor  
An apparatus for measuring change of position of a rotor in a drive system having a drive rotor and a driven rotor generally concentrically mounted with respect to the drive rotor, the drive and...
5239874 Method of monitoring the condition of a motor operated valve system  
A method of evaluating degradations throughout a MOV (i.e. motor operated valve) by establishing specific interrelationships between a power related parameter from the MOV motor (being, for an AC...
5235524 Ultrasonic cavitation detection system  
A forced-excitation ultrasonic cavitation detection system for detecting cavities in rotating machinery such as pumps, water turbines and ducting elements, is composed of an ultrasonic transmitting...
5228342 Ultrasonic position sensor and method  
An ultrasonic position sensing apparatus for detecting open, closed and intermediate positions of a valve element movably mounted in a valve housing includes an ultrasonic target fixedly attached...
5220843 In situ method of determining the thrust on valve components  
Without disassembling a valve stem from a valve, the valve is decoupled from a valve actuator such that the valve stem and attached valve disc or body may shift to and from a seated position...
5197328 Diagnostic apparatus and method for fluid control valves  
Apparatus and method for diagnostically testing and determining the operating condition of a pneumatically operated valve. A diagnostic controller is connected to a valve actuator assembly so that...
5197338 System and method for determining torque output of motor actuated valve operators  
A system for determining torque generated by a motor actuated operator driving a partial turn valve including a torque ring replacing the cover of the operator housing, a frictional shaft coupling...
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....
5168753 Measuring device for detecting parameters charterizing the operating behavior of hydraulic assembles  
A measuring device connectable to a pressure conduit of a hydraulic circuit for determining characteristic operational parameters of hydraulic energy converters forming components of the hydraulic...
5167151 Spring pack testing and analysis system  
This invention pertains to a method and apparatus for testing the spring pack of a motor operated valve. It incorporates a test stand into which the spring pack is inserted. A horizontal reference...
5154080 Integrated check valve testing system  
Integrated check valve testing system includes a method and apparatus for non-intrusively testing a check valve which includes using an ultrasonic transducer externally connected to the check valve...
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...
5146791 Apparatus and method for measuring a spindle force  
A measuring apparatus for determining a force exerted by a spindle, in particular a spindle of a fitting, associated with a spindle housing includes a measuring apparatus housing to be firmly...
5142906 Apparatus for measuring valve stem loads in a motor operated valve assembly  
An in-series load bearing sensor is provided for use with a motor operated valve assembly. The in-series load bearing sensor is installed in the mechanical load path between the actuator and valve...
5143119 Drive for a feed valve  
A drive for a feed valve having an actuating line and a device for controlling the pressure in the actuating line. The device comprises three valves connected to one another to form a hydraulic...
5140853 Method and apparatus for monitoring and measuring dynamic loads in thrust inducing systems  
Actual valve stem thrust loads in a motor operated valve are monitored and measured directly by the use of load cells disposed directly between the valve and the operator. Direct measurement of...
5129264 Centrifugal pump with flow measurement  
An improved pump casing and process for measuring fluid flow through a centrifugal pump casing is disclosed wherein the static pressure of a fluid being pumped by said pump is measured at a first...
5115672 System and method for valve monitoring using pipe-mounted ultrasonic transducers  
A system and method for determining the condition of one or more parameters of a valve, e.g., particularly a check valve in a fluid carrying pipe, by monitoring fluid turbulence downstream of the...
5113705 Functional testing of solenoid valves in air  
A solenoid valve that is to be used to control flow of a liquid medium is tested in a test fixture which applies a leak test, a flow test, and a response test using a gas as a test medium. The test...
5112196 Method and apparatus for analyzing the operating condition of a machine  
A method and apparatus for analyzing the operating condition of a machine, such as a reciprocating compressor (10), is provided. The method comprises testing for fluid flow across the closed...
5111690 Valve stem load monitoring system with means for monitoring changes in the valve yoke elongation  
A valve stem load monitoring system for determining the axial load on a valve stem of a valve assembly which includes distance measuring means for measuring elongation changes over a substantial...
5107441 System for evaluating the flow performance characteristics of a device  
A system for determining the flow performance of a valve by first measuring certain flow parameters of the valve with the stem fixed in a plurality of different positions between full open and full...
Matches 151 - 200 out of 420 < 1 2 3 4 5 6 7 8 9 >