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7574927 |
Tensiometer
A tensiometer for measuring thread tension, provided with a bending element fixed at one end and tensioned at the other end by the thread, at least one sensor element and damping device for...
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7536924 |
Flexure-based dynamometer for determining cutting force
A high frequency flexure-based dynamometer for measuring vibrations to use in determining cutting forces in a tool is disclosed. The dynamometer device may operate within a pre-selected high...
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7513162 |
Vibration sensor or measurement detector
Vibration sensors or measurement detectors having connecting cables ( 40 ) for electrical supply voltages and/or signal voltages are provided with a clamping or winding space ( 42 ) on the bottom...
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7485100 |
Microscopic dynamic mechanical analyzer
An electromagnetic apparatus, comprises a conductive loop comprising two parallel conductive legs joined at a free end by a sample contacting member and a magnetic circuit that imposes a magnetic...
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7478563 |
Apparatus and method to measure cable tension
A method and apparatus for measuring tension in a stressed cable wherein the apparatus comprises two clamps, a circuit board and a power source. A transverse acceleration is generated in the...
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7441464 |
Strain gauge sensor system and method
A strain gauge sensor system and method for measuring the strain in a member, such as a fiber rope, has a sensor target assembly having a plurality of magnets carried spaced apart by individual...
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7305883 |
Chemical micromachined microsensors
The present invention provides sensors based on micromachined ultrasonic transducer technology. The sensors preferably include a plurality of sensor elements, but may include only one sensor...
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7143657 |
Planarity-measuring roller for steel strip
A planarity-measuring roller for metallic strip has a plurality of force sensors set in respective outwardly open recesses in a roller body with respective covers overlying the sensors in the...
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7035718 |
Method and System for detecting and reducing draft tube pressure fluctuations
A method and system to reduce vibration in a turbine-generator including measuring a magnitude of radial vibration of a turbine shaft with at least one vibration sensor configured to generate a...
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6876715 |
Measurement system of torsion vibration for reactor internal pump
Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector...
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6679123 |
Torque measuring piezoelectric device and method
A method and apparatus are described for non-contact measurement of torque applied to a torque-bearing member such as a shaft. The method involves the use of a piezoelectric transducer mechanically...
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6637276 |
Tire sensor and method
A tire sensor assembly that is embedded in an elastomeric tire at a particular radial depth inwardly from a contact patch of the tire includes a flexible generally pyramid-shaped body and a pair of...
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6628124 |
Electrocapacitive force measuring apparatus
A sensor unit is formed by a single integral body obtained by coupling a resiliently deforming portion with a base portion without interposing a soft material therebetween, and a force applied to a...
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6619135 |
Force sensor having a substrate for measuring deformation of the substrate
A force sensor having a substrate for measuring forces is provided, on which substrate a first path and a second path for travel of acoustic surface waves are arranged. The two paths are arranged...
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6615676 |
Power steering belt tensioning apparatus and method
A method and system for tensioning a belt, the system including a tensioning measuring head, a controller, and an air impact gun. The tension measuring head includes a vibration sensor and a belt...
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6611178 |
Nanometer-order mechanical vibrator, production method thereof and measuring device using it
There are provided a stable and highly sensitive nanometric mechanical oscillator having a considerably high detection resolution that enables detection of variation in force or mass on the...
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6546822 |
Seat occupant sensor device
A seat occupant sensor device for detecting whether or not an occupant is seated on a seat is made up of a pressure sensitive switch including a pair of sensor portions and a connecting portion,...
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6523423 |
Force sensor
A force sensor includes: a supporting base having a hollow portion, a flexible plate having at least one detecting element and extending across over the hollow portion, and an operating member...
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6487764 |
Method of making a steel cable reinforced conveyor belt
This invention relates to a method of making a steel cable reinforced conveyor belt while monitoring the tensions of all the cables.
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6456898 |
Press monitoring and control system
A press monitoring and control system includes a press machine, a press configuration module and a press controller. The press machine has a lower die coupled to an upper die, wherein the lower die...
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6356848 |
Method and apparatus for measuring power output and for measuring tension and vibrational frequency of a elongate flexible member
The invention broadly provides a method and apparatus for measuring the power output of one powering a vehicle or other system driven by the elongate flexible member such as chain. In a preferred...
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6155121 |
V-belt noise tester and testing method
A V-belt is mounted on a first fixed conical plate and second fixed conical plate of a lower unit, and an upper unit is made to descend. A first movable conical plate and second movable conical...
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6142023 |
Method and apparatus for applying a predetermined proof load to a cable and measuring the resultant cable length
A system for applying a predetermined proof load to a control cable and measuring the resultant cable length thereof includes a motor (32) which, under the control of a controller (14) drives an...
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5877431 |
Apparatus for measuring tension of belt
An apparatus for measuring a tension (T) of a belt in a spanned state includes a vibration detector (1A) for detecting a vibration of the belt, a vibration frequency arithmetic unit (2A) for...
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5821430 |
Method and apparatus for conducting in-situ nondestructive tensile load measurements in cables and ropes
An apparatus and method for the non-contact measurement of tensile loading (or tension) in ferromagnetic materials, particularly wire ropes, cables, and strands. The magnetostrictive effect is used...
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5750894 |
Measurement of tension using natural frequency of vibration
A method of determining the tension in a guy wire or other flexible member. The first 15 natural frequencies for the design tension and tensions at 1 percent increments above and below the design...
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5731528 |
Rope tension measuring apparatus for use with an elevator
A rope tension measuring apparatus for measuring rope tension of a plurality of main ropes that suspend an elevator car and a counterweight and adjustment quantities of tension adjusting springs...
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5726362 |
Tension loss/frequency comparison device
The Tension Loss/Frequency Comparison Device is a simple and convenient way to determine, within a few hundred pulses, if two independent frequencies are identical in pulses per second. One...
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5710432 |
Non-contact tension measurement of moving fiber using traveling wave time-of-flight analysis
The invention provides an optical fiber producing apparatus having non-contact fiber tension monitoring, comprising: a traveling wave wavelet transformation processor and a time-of-flight fiber...
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5698796 |
Belt tension measuring apparatus
Apparatus and method for measuring a tension of a belt in a state spanned between pulleys under tension. Vibration is applied to the belt with a frequency varying within a predetermined frequency...
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5493918 |
Method and contactless measuring device for the tension of a filament
Method and its devices for the contactless measurement of the tension and/or travel speed of an insulating filament, thread or wire. The method consists of processing the signal ##EQU1## in which...
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5454272 |
Cable tensioning device
A non-destructive method for tensioning a cable under tension is described whereby the cable is contacted with an impact stimulus with a force transverse to the length of the cable thereby creating...
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5435191 |
Natural frequency measurement apparatus and tension measurement apparatus using the same
The vibration of a belt or the like detected by a microphone is shaped into rectangular waveforms. The period of each cycle of waveform is held by a latch (8) and sequentially stored in a period...
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5417120 |
Vibrating beam force transducer with automatic drive control
A vibrating beam force transducer is comprised of an oscillating sensing element having an output frequency indicative of the force applied to the sensing element. The sensing element has a...
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5317917 |
Resonant pressure transducer
A resonant pressure transducer, having a deformable diaphragm or membrane exposed to an ambient environment wherein a pressure force to be measured exists, is provided. A transducer according to...
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5316562 |
Optical fiber tension monitoring technique
As an optical fiber (12) is being drawn, air (14) is directed at a portion of the fiber as a succession of air pulses, the pulses having a frequency near the natural frequency of the fiber portion....
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5251491 |
Method of and apparatus for measuring a tension of grid element
A method of and apparatus for measuring a tension by the steps of vibrating a measured object of a line- or belt-shaped configuration by the flow of air from an air nozzle so that the measured...
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5220836 |
Method and arrangement for piezoelectric measurement
A sensor containing at least one piezoelectric transducer element is operated via a common, single signal line in both possible operating modes--first, at low frequencies as a measuring element for...
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5170668 |
Unit for measuring or other device
A unit which is useful in a measuring device such as a vibration rod transducer. The unit comprises supported diamond layers having an unsupported bridging diamond strip which is integrally formed...
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5146787 |
Pressure microsensor
A pressure microsensor comprises, between two plates in an insulating material: a bottom silicon plate (3) forming a base; a middle silicon plate (2) constituting a diaphragm (11) surrounded by a...
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5142913 |
Non-quartz resonating transducer
A transducer for measuring a moment force as a related function of pressure and tension where a spirally wound bourdon tube has a confined end arrayed to apply a moment force to pretensioned metal...
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5113708 |
Apparatus to measure yarn tension
An apparatus to cause a running length of yarn to vibrate at its harmonic frequency by through utilization of dual orifices through which pressurized air flows at an angle of intersection and to...
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5060524 |
Racket stringing tension measuring device
A device to measure the tension of the stringing of rackets used for playing tennis, squash, etc. which entails an end area to strike the said stringing and another adjacent area which includes a...
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5036266 |
Mass velocity controller
A system (11) for monitoring and controlling the movement of a mass (12) along a predetermined path (14) by a motor-driven flexible member (20) is provided to modulate the motor drive output so...
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5007294 |
Process and device for measuring the tension of racket strings
A method and device for measuring the string tension of a strung racket such as a tennis racket wherein a mechanical/electrical transmitter is attached to the membrane made from the racket strings...
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4979125 |
Non-destructive evaluation of ropes by using transverse impulse vibrational wave method
A non-destructive method for evaluating ropes, cables, and strands for flaws and tension is shown. The method permits detecting flaws by recognizing certain vibrational wave amplitude and...
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4928538 |
Monitoring tension in an elongate flexible member
A method of monitoring the tension in a flexible drive belt (1) which passes around a plurality of pulleys (2, 3) includes the steps of causing a portion of the belt (1) when installed around the...
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4841784 |
Method and apparatus for monitoring the tensile force on a thread
A device for monitoring the tension on a thread comprises a frame for retaining the thread; a leaf spring on the frame for bearing against the thread and being displaced thereby as a function of...
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4833928 |
Method and apparatus for noncontacting tension measurement in a flat foil and especially in a paper web
A method and apparatus for measuring the tension of a thin, plane membrane (1). In accordance with the method, a burst of a membrane wave (2) is generated by a transducer element (3) e.g. a...
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4794802 |
Process and apparatus for measuring the warp tension in looms and the like
To measure the tension in a set of threads (10) or a warp (11) in a loom or the like, a vibrating device (20) which is rotatable about an axis (23) is moved into the vicinity of the web of material...
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