Matches 201 - 250 out of 388 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
4397560 Photometer with microtray well position indicator  
A photometer for sensing the optical density of a plurality of liquids located in a microtray provided with a rectilinear array of wells is provided with a detent device for locating each well in...
4385297 Arrangement for sensing proximity of a reciprocating member  
An eddy current coupled transducer and external electrical circuit are disclosed for use with a fluid actuator for detecting the relative position of the reciprocating member of the actuator. The...
4381506 Position-electrical signal transducer  
To provide a rugged vibration and shock-insensitive position transducer, a coil is wound on a lamella-like carrier which has a body element of electrically insulating material on which, at least on...
4366706 Needle position sensing system for a fuel injector nozzle holder  
Fuel injector nozzle holders typically include a needle which is coupled within the nozzle holder and displaceable between open and closed positions. The nozzle holder also includes a chamber and a...
4364045 Digitized displacement transducer  
A displacement measuring transducer performs a direct conversion of changes in physical position, particularly angular position, into a digital form suitable for input to a digital microprocessor....
4359895 Needle position indicator for a fuel injector nozzle holder  
A needle position indicator is positioned within the interior of a fuel injector nozzle holder which includes a needle having upper and lower ends, a needle seat which engages the lower end of the...
4355305 Resolver processor with error detection  
A digital resolver processor measures the angle of a rotatable device. A resolver connected to the rotatable device generates sinusoidal signals as a function of an excitation signal and of the...
4355364 Velocity sensing system  
A gear speed measuring system which is capable of measuring speeds down to zero, which is capable of use in a rugged environment, and which is relatively insensitive to gear-sensor spacing. The...
4340890 Arrangement for telemetrically monitoring moving machine parts  
A device for telemetrically monitoring moving machine parts, particularly rotating vehicle wheels, by means of a stationary transmitter and receiver assembly comprising output and input coils...
RE30847 Tubular wheel speed sensor  
A rotation indication system having an improved sensing device for determining the velocity of a rotating body is disclosed. The improved sensing device is tubular in configuration and includes a...
4305072 Rotational position detector  
A single sensor is located close to a ring gear on the periphery of which teeth are disposed equiangularly except at an angular reference position. When the ring gear rotates, the sensor generates...
4259603 Electric motor  
An electric motor comprising a stator block or assembly having stator windings and a control circuit substrate for supplying driving current thereto mounted integrally with the stator block, a...
4257040 Engine rotational information detecting apparatus  
An apparatus for detecting information indicative of the rotation of an engine is disclosed in which a multiplicity of magnetic poles are formed on a track along the circumferential periphery of a...
4253089 Signal transmission device for electric rotary machine  
The rotor of an electric rotary machine is provided with two identical transmitting devices each including an amplitude modulator and a transmitting antenna. One of the modulators modulates a...
4223300 Electro mechanical position indicator using relatively moveable coils  
An electromechanical positioner indicator is provided which comprises first and second relatively movable parts, the first part including two oppositely facing surfaces which are everywhere...
4186341 Magnetic developing agent level detection apparatus using an oscillator whose frequency is controlled by the level  
In detecting the presence or absence of a developing agent or determining the residual amount thereof, at least one coil is arranged outside a developing agent container, so that a change in...
4156192 Inductive displacement transducer using plural magnetic screens rotatable about different axis to modify an inductance proportional to the displacement  
An inductive transducer intended, according to the invention, for converting the displacement of mechanical objects into an electric signal, comprising primary and secondary coils with cores,...
4150358 Temperature measuring system for rotating machines  
A system for transmitting signals between stationary and movable portions of a machine without utilizing any direct electrical contacts. An alternating supply source for the system is provided on...
4140999 Transformer hot spot detection system  
The invention is a system for the detection of hot spots, i.e., localized over-heating, in electrical power transformers and the like which utilize one or more telemetric temperature devices that...
4134065 Transducer for directly converting mechanical displacement to phase information  
A linear variable phase transformer directly converts displacement to phase information. In one form the relationship of such displacement and such phase information is substantially linear or...
4132980 High-sensitivity inductive transducer for rectilinear or rotational displacement  
A core with at least three elongated legs, at least one leg being centrally located among all the elongated legs, is joined at at least one end by a yoke portion connecting all the legs. The...
4127843 Position sensor device for elevator car  
A position sensor disposed on an elevator car has a first rotatable shaft connected to a secondary winding of a transformer or a switch actuating member, and a second rotatable shaft coaxial with...
4112366 Electromagnetic displacement scanner using an E-shaped core oblique to the scan direction  
An improved electromagnetic scanner has a substantially E-shaped core having an outer surface that is positioned, at a predetermined air-gap spacing, from a regularly grooved ferromagnetic surface...
4103233 Installation for the measuring of an essentially linear displacement  
Installation for the measuring of an essentially linear displacement of a body, with a fixed coil and axial direction of which corresponds to the direction of the displacement to be measured, a rod...
4076039 Signal transmission and control system  
The present invention relates to a signal transmission and control system wherein a signal is transmitted from one member of co-acting members to another member; the signal being transmitted...
4075551 Inductive displacement sensor  
A variable inductor having a U-shaped magnetic core with a short-circuiting plate providing a short-circuiting ring for both legs of the core movable along the core legs in response to a...
4064451 Hysteresis compensated reed switch assembly for a position indicating system  
The position of a control rod located within a nuclear reactor is sensed by a position indicating system utilizing low hysteresis reed switch assemblies. Each reed switch assembly includes a reed...
4061966 Method and apparatus for generating a continuous magnetic field determining the position of an inductive sensing element therein  
A technique for sensing the relative position of a cursor or other indicator integral with an inductive sensing element along at least one coordinate of a specified area is described. An array of...
4060799 Two-speed resolver employing differential reduction techniques  
A two-speed resolver system wherein the rotor of a fine brushless resolver which is directly connected to the shaft to be instrumented is connected to the rotor of a coarse resolver so that the...
4059015 Angle-to-current converter  
An angle-to-current converter for generating an electrical current output in direct proportion to the degree of angular displacement of an input shaft. The converter includes a...
4053849 Oscillation means for generating a differential AC signal proportional to movement of a conducting member  
A high frequency pickoff is disclosed having two spaced inductors electrically connected in series and a capacitor connected in parallel with the inductors, thereby forming a parallel resonant...
4037328 Spatial orientation device  
A navigational device for use by underwater swimmers and divers in which a telescopically extensible boom is releasably and pivotally attached to the swimmer or diver. A compass device such as a...
4033042 Shaft alignment apparatus and method  
Alignment apparatus and method for aligning a pair of machines having first and second rotating shafts in a machine train with at least one flexible coupling interconnecting the first and second...
4028686 Digital detector  
A detector for a dynamic phenomenon with a cyclically varying condition, as motion of a rotating part. At least three digital sensors are separated in phase with respect to the cyclic condition....
3991840 Weighing devices  
A top loading weigh balance is described which comprises a platform supported by a plurality of resilient suspension devices. Each suspension device is associated with a transducer connected in a...
3975706 Abnormality-detecting device in a brake system  
Abnormality-detecting device of very compact structure for particular use in the vehicle brake system for detecting the amount of wear in the brake lining element and temperature rise in the brake...
3973191 Inductive displacement sensor apparatus  
A variable inductor having a U-shaped magnetic core with a short-circuiting plate providing a short-circuiting ring for both legs of the core movable along the core legs in response to a...
3967064 Low noise electronic circuit, transducer using the same, and method  
An electronic circuit and method used in conjunction with transducers for eliminating noise signals which includes an AC source of excitation for first and second transducer coils, called pickoff...
3950993 Temperature sensors with improved operating characteristics utilizing magnetic elements  
Temperature sensors utilizing either one pair or two pair of inductive magnetic elements are disclosed. The inductive elements of each pair are constructed of different magnetic materials so that...
3938077 Alarm device for continually indicating the state of air pressure in a plurality of tires  
An alarm device for informing reduction of pneumatic pressure of tires comprises a group of oscillators each consisting of an oscillator circuit, an electric power supply source thereof, a switch...
3930201 Pulse source to provide a pulse train representative of movement of a shaft and a reference pulse representative of a reference position  
Transducer elements, such as the teeth of a star-wheel are uniformly distributed around the circumference of a disk; one of the teeth is slit to form a double tooth with a gap therebetween, the...
3917997 Magnetic flux closure member for an angular velocity sensing device  
A sensing device with improved sensitivity for sensing the velocity of a rotating magnetizable wheel is disclosed. The sensing device utilizes two closed-loop magnetic cores and four inductive...
3906470 Mechanical-electrical transducer gauge provided with a circuit for making linear the response of the gauge  
A circuit for making linear the response to a mechanical-electrical transducer gauge having variable impedance means within an electrical detecting circuit including a compensating system...
3893090 Position indication system  
A position indication system for displaying the position of a movable element with respect to fixed known coordinates. A plurality of sensors, individually responsive to the elements pressence, are...
3876927 MAGNETIC SENSOR WITH SHORTED TURN  
A magnetic pickup for sensing movement of a body of magnetic material. The pickup includes a coil having a shorted turn to limit the amplitude of the output signal which would otherwise occur at...
3876998 Arrangement for the inductive transmission of signals between a stationary point and a rotating electric machine part  
An improved arrangement for the interference free, inductive transmission of data between a stationary point and a rotating part of an electric machine, which data may be transferred in either...
3863235 Phase sensitive position pickoff device  
In an electrically inductive motion detector of the type having a pair of permanently magnetized pole pieces, each magnetized with a non-alternating polarization, and adjacent a movable magnetic...
3858191 DIGITAL MULTIPLEXED POSITION INDICATION AND TRANSMISSION SYSTEM  
A digital position indication system for displaying the relative position of at least one movable element with respect to fixed known coordinates. A sensory system is provided for each movable...
3857089 MAGNETIC POSITION INDICATOR  
A position indicating system indicates the position of a ferromagnetic shaft which drives a moderator in a nuclear reactor and which is enclosed in a chamber. The system includes a plurality of...
3855525 ANGULAR VELOCITY SENSOR  
A sensing device for sensing the speed of a rotating tone wheel which creates a varying magnetic field as it rotates is disclosed. One embodiment of the sensor comprises a closed-loop magnetic core...
Matches 201 - 250 out of 388 < 1 2 3 4 5 6 7 8 >