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4326596 |
Electronic weighing apparatus
An electronic weighing apparatus includes a switch mounted on a base surface thereof, actuated by an actuating member biased to support a portion of the base. When weight is applied to the...
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4294513 |
Optical sensor system
An optical transducer with an optical waveguide having two paths for the propagation of light is deformed in response to acoustical pressure variations or other parameters to be sensed to modulate...
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4294322 |
Electronic weight measuring device
An electronic weight measuring device includes a load cell producing an output voltage varying from -V X to 0 volts according to the weight of load, a bias circuit producing a variable bias...
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4290499 |
Apparatus for testing and fitting cross-country skis
Apparatus is disclosed for the testing and fitting of cross-country skis including means to support the cross-country ski having sensor means distributed along its length and width adapted to emit...
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4280363 |
System for measurement of force with directionally orientated strain gauges
A measuring shaft intended to be fixed in a hole is equipped with strain gauges or similar devices for sensing a load. The inner end of the measuring shaft is threaded to engage with threads...
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4258812 |
Self-contained portable electrically sensed bathroom scale
A portable bathroom scale is described wherein an optical encoder is used to determine the scale displacement in an unambiguous manner. A convenient circuit is used to transform the optical code on...
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4238784 |
Electronic measuring system with pulsed power supply and stability sensing
The electronic measuring system includes a novel power supply which converts D.C. from a D.C. source to voltage pulses to drive a transducer. During intervals between transducer power pulses, an...
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4158396 |
Electronic weight measuring device
An electronic weight measuring device comprises a load cell to produce a voltage signal corresponding to the weight of load applied, an amplifier circuit for amplifying the output signal of the...
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4147618 |
Method and apparatus for measuring product contents
An improved apparatus for and method of measuring the mass of the contents of a product is described, in which the mass of the contents of the product is relatively small compared to the mass of...
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4129191 |
Optical detector which compensates for nonlinearities in a weight measuring system
An optical detector for a weight measuring system senses the relative movement between a frame and a load support of a scale assembly. The detector includes a transducer subassembly which carries a...
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4096740 |
Surface acoustic wave strain detector and gage
A strain detector comprises an oscillator having a surface acoustic wave delay line as its frequency control element. The delay line is constructed on a substrate, such as quartz which is disposed...
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4094371 |
Digital display for weighing scales
System for providing a digital indication of the load on a scale, utilizing a relative position transducer to produce two output signals which vary between fixed levels in response to incremental...
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4081801 |
Electronic measuring system with pulsed transducer
The electronic measuring system includes a novel power supply which may receive power from a D.C. or A.C. source but which is particularly adapted to convert D.C. battery power to higher voltage...
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4076088 |
Balance with a digital and an analogue display
Scale with a digital display and an additional analogue display, the latter comprising at least one group of optically activable elements forming a row, each element corresponding to a value range...
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4072201 |
Digital weighing machine
A weighing machine with a digital display and having a lever and coded disc that rotate about a common axis. The disc is constrained to rotate in the direction of the lever after a preset time...
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4068773 |
Lift vehicle with fail-safe overload protective system
An overload protective system continuously monitors the forward overturning moment on a counterbalanced lift truck and prevents further raising of the carriage or further forward tilting of the...
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4051395 |
Weight actuated piezoelectric polymeric transducer
A piezoelectric polymer transducer for converting mechanical energy into electrical energy includes a transducing means formed of a polymeric piezoelectric layer of material that is connected at...
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4047585 |
Scale optical detector with spring constant variation compensator
An optical detection system for a spring scale includes an apparatus for generating a moire interference fringe pattern and detecting the pattern movement to measure scale tare deflection and...
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4047586 |
Zero load adjustment apparatus for spring weighing scale
A spring weighing scale includes an optical detector which generates a moire fringe pattern and moves the pattern as an optically amplified function of scale tare deflection. A first of a pair of...
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4044846 |
Automatic zeroing of scales with digital display
A system for the automatic zero setting of scales having digital display of the weight is provided so that at tare weight of a bridge mechanism connected to a weighing pan of the scale the display...
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4044847 |
Weighing system with a moire optoelectronic transducer
A weighing scale includes an optoelectronic system having apparatus for generating a moire fringe pattern and for detecting the moving of the pattern in accordance with scale tare deflection. One...
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4024053 |
Apparatus and method for detecting and dispensing articles of preselected weights suspended from shackles
Apparatus is disclosed for detecting and dispensing articles of preselected weights suspended from shackles movable along a path by conveyor means. The apparatus comprises scale means for...
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4020912 |
Indication apparatus with discrete illuminated projections
An indicating apparatus for indicating measured values in a digital manner, comprising a graduated plate adapted to be moved in accordance with the weight of an object to be weighed, the graduated...
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4008776 |
Electronic weighing scale
A weighing scale especially adapted for use as a pediatric or infant scale having a mechanical leverage weighing structure with a high degree of sensitivity and low friction and hysteresis coupled...
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3997769 |
Digital decadic indicator device for measured values
A digital decadic indicator for measured values in which the object of the invention is to indicate along with the measured values the associated accidental so-called Gaussian measurement error....
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3994351 |
Scale controller
Electrical circuitry and associated mechanical apparatus are combined to provide a non-contactng transducer for adaptation to an existing mechanical scale for adapting the mechanical scale to an...
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3986571 |
Load-compensating weighing apparatus including signal modifying means
Weighing apparatus of the return-to-zero load compensation type is disclosed, characterized by the provision of voltage-responsive impedance means for modifying the pan position sensing signal to...
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3973636 |
Thermobalance
A thermobalance wherein fulcra are provided respectively at the tips of both arms in a main balance, auxiliary balances are suspended respectively on said fulcra, one arm of the above mentioned...
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3969934 |
Load cell amplifier
A load cell of the beam type comprising an operator member having a pair of parallel longitudinally extending slots forming a central beam member and a pair of parallel bearing members spaced...
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3968850 |
Electromagnet weighing balance
An electromagnetic weighing balance includes a load support system for supporting the mass to be weighed and including an electromagnetic balance coil disposed in a magnetic field and fed with a...
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3967497 |
Vibrating force sensor
A force sensing device in which the oscillations of a vibrator are damped by applying a weight, force, which is to be measured directly against a vibrating element. The output of a transducer,...
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3966002 |
Portable vehicle scales
Portable vehicle scales are described for weighing vehicle loads. The scales are low profile with a ground-engaging base. A wheel support platform is spring-supported on the base for supporting the...
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3963082 |
Force measuring apparatus of the vibratory string type
Improved force measuring apparatus of the one- or two- string type, including means for applying to the movable member of the apparatus a corrective force that compensates for nonlinearities in the...
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3960227 |
High speed weighing scale
A high speed weighing scale for use in a continuous mail sorting and postage imprinting system which automatically weighs and meters each piece of mail. The system is designed to rapidly handle a...
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3938381 |
Sensitive deep-well-drilling hook load measuring system
A hook load measuring system for improving the sensitivity of such measurements in deep-well-drilling operations. It employs a transducer actuated by the hook load and an output signal from the...
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3927726 |
Digital display type weighing apparatus
A pointer is movable proportionally to applied body-weight and has a servo-sensor controlling member attached to one end thereof. A driving plate is driven by a motor. A servo sensor is mounted on...
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3926271 |
Microbalance
A microbalance comprising a tapered tubular element that is clamped at one end while the other end is free to vibrate. The specimen whose mass is to be evaluated is attached to the free end of the...
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3923110 |
Precision displacement measuring device for an electronic read-out platform scale
A parallelogram linkage transmits the displacement of the weighing platform to a bridging arm from which the movable member of a precision displacement measuring device is suspended. This movable...
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3921736 |
Motion detector for a weighing scale
A method of detecting motion of a weighing scale platform including the steps of periodically generating electric signals representing weight, transferring said weight signals to a memory,...
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3918587 |
Apparatus for detecting and dispensing articles of preselected weights suspended from shackles
Apparatus is disclosed for detecting and dispensing articles of preselected weights suspended from shackles being moved along a path by a conveyor line. The apparatus comprises a platform to...
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3918539 |
Weighing system
A weighing system whereby the weight of material fed into a weigh pan is detected and an electrical signal continually indicating that weight produced and used to control the feeding and dumping of...
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3915247 |
Electrical balance apparatus
A high sensitivity wide range microbalance suspension in which a top loading pan joined to a force coil coupled vertical support is coupled with low hysteresis torsion ribbon pivot elements to...
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3912029 |
Weighing apparatus
Apparatus for weighing vehicles in motion comprising a support member across which vehicles to be weighed will travel, and a transducer arranged to produce a first electrical signal indicative of...
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3897681 |
Force measuring apparatus of the vibratory string type
Improved force measuring apparatus of the one- or two-string type, including means for applying to the movable member of the apparatus a corrective force that compensates for non-linearities in the...
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3895421 |
Method of adjusting the sensitivity of a weighing mat
A method of adjusting the relative sensitivities of sections of a weighing mat which preferably includes three elastomeric, conductive layers. The outer conductive layers are separated from the...
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3894594 |
Weight indication and weight indication storage mechanism for a scale
Strain gages are bonded to deformable support parts for the platform of a scale to produce signals in response to the deformation of such parts under a payload placed on the scale platform. The...
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3890833 |
Pressure measuring apparatus
Pressure measuring apparatus with electric force compensation has a magnet coil system exerting a counterforce on a pressure sensor. The system has at least two magnet coils which are controllable...
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3888321 |
Electronic balance
An electronic balance includes circuit means for providing a plurality of electrical pulses representing the weight of an object positioned on the balance. Storage and comparator means are provided...
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3887797 |
Device for automatically adjusting fault null point indication of digital scale
Device directing to an automatical adjustment of fault null point indication of a digital scale, which involves digital voltmeter for receiving an electric analogue signal proportional to the...
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3885427 |
Electronic balance for measuring masses or forces
A balance for measuring masses and forces comprising a phase-locked frequency multiplier which multiplies the string frequency F 1 that is raised by the process of measurement with a predetermined...
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