Abstract: The housing of an elongated proximity-focus image intensifier comprises at least two elongated parts. The parts have in cross-section such dimensions and such a configuration that the housing is self-supporting. An exemplary embodiment of such a housing which is essentially rectangular in cross-section has a front wall, a rear wall and two side walls, all having an essentially rectangular cross-section. In the case of at least two pairs of adjacent walls the edge in the longitudinal direction of the surface, facing the interior of the housing, of a first of the pair of walls is provided with profiling in the form of a recessed section in which the longitudinal edge of the adjacent tube wall is received.

Abstract: An automatic gain setting circuit for automatically adjusting the gain of an amplifier which drives an analog meter. The gain of this amplifier is adjusted automatically with the push of a button switch so that the meter will read mid-range for the signal input to the amplifier. In this circuit, the operational amplifier is connected between an input signal and the analog meter readout. This operational amplifier utilizes a feedback circuit having a variable resistance which changes the gain of the amplifier as the resistance is changed. The resistance in this feedback circuit is changed by an electrical comparison circuit which compares the output signal from the amplifier with a reference voltage upon the push of a button switch. The reference voltage is preset to cause the meter to read mid-range. Once the button switch is pushed, the comparison circuit provides an output control signal which is directed to the feedback circuit of the operational amplifier.

Abstract: Twenty temperature sensors follow one another along a measurement fiber. Each successively reflects a small fraction of the energy of an interrogation light pulse running along said fiber, with the value of the fraction being indicative of temperature. To do this, each sensor is constitutred by a gap between two successive lengths (F2, F3) of an optical fiber, said gap being filled with a transparent glue (36) whose refractive index varies as a fuction of temperature. The interrogation pulse is returned solely by the optical surface constituted by the end face (38) of the upstream length (F2) of the fiber.

Abstract: A spectral filtering optical sensor comprises a stationary zone plate and stationary co-terminous ends of input and output fibres with the interposition in the optical path between the zone plate and the optical fibre ends of a variable optical focussing arrangement the focussing characteristics of which change with changes in magnitude of the particular parameter being sensed and thereby vary the effective optical path length between the zone plate and the optical fibre ends and the wavelength of light impinging on the end of the output fibre.

Abstract: An optoelectronic theodolite sensor contains in a frame, a cylindrical measurement cell half filled with an opaque liquid or entirely filled with two overlying immiscible liquids, each of which fills half of the cell, the first one being opaque and the other transparent to light. In the normal position of the measurement cell, the liquid or the interface between the two liquids forms with opaque side surfaces of the cell faces, an exact quadrant through which the light of a light source reaches an optoelectronic element located on the opposite side of the measurement cell. An angular displacement of the measurement cell causes a change in the intensity of the light reaching the optoelectronic element, which is converted and then applied as a function of the displacement angle .phi..

Abstract: A beam splitter (120) arranged in the radiation path of the scanning beam splits off a reference beam synchronously moving with the scanning spot (21) to a reference plane (140). The movement of the scanning spot (21) can be checked by measuring, with the aid of a radiation detector (160), the movement of a reference spot (121) formed by the reference beam in the reference plane. In this way an accurate determination of the position of the scanning spot (21) is possible while using simple beam-deflecting elements (40,42) having a relatively low accuracy. A cylindrical lens (131) gives the scanning spot the shape of a line, so that sensitivity to dust and other contaminations on the reference plane is reduced considerably.

Abstract: An optical system, useful for a flying-spot scanning apparatus includes a laser tube, an acousto-optical modulator, a deflecting mirror directing the laser beam in a first direction, and an objective lens having the characteristic of h=f.multidot.sin .theta., where h is the distance on an object between the optical axis and the point upon which the laser beam impinges, f is the focal length of the objective lens and .theta. is the angle formed by the beam entering the objective lens with respect to the optical axis. The objective lens includes a first optical unit having the negative focal length and a second optical unit having a positive focal length. The third-order distortion coefficient of the objective lens is approximately "1". Straight and parallel scanning loci can be effected on a recording medium, as the recording medium is fed in a second direction.

Abstract: Apparatus for measuring surface defects or the distance from the apparatus to a surface comprising means (37,38,43,44) for passing a beam (48) of light to the surface (11) at an angle other than normal, means (51) for viewing the area (47) of the surface (12) illuminated by the beam (48) and means (53-50) for measuring the movement of the illuminated area (47) whereby the measure the position of the illuminated area (47), means (17) being provided to rotate the apparatus and means (53) being provided to derotate the image of the illuminated area so as to enable, for example, the interior of cylinders (10) to be inspected.

Abstract: An instrument and method for selectively detecting alpha particles emitted simultaneously by radium A and radium C' which are derived from radon includes a device for sampling air through a filter which retains the alpha-emitting aerosols, a detector preferably CR 39, in which the alpha particles corresponding to the respective energies of the alpha emissions of radium A and of radium C' are selectively using the track diameter discrimination method. Either a single or a multiple collimator system can be adopted. Collimators are composed of simple parts allowing the flexible adjustment of the geometric efficiency. If a multiple collimator is adopted, it will provide advantage of reducing the volume while improving the overall efficiency. An appropriate thickness can be chosen for the absorber attached to the collimator so that the energy difference between alphas from RaA and RaC' can be enhanced.

Abstract: A tracer injection method is set forth and is practiced by using spaced end located injectors on a sonde having spaced detectors along the length of the sonde. The injectors inject radioactive isotopes which are distinguishable from one another at the detectors. The method contemplates simultaneous injection of different isotopes, making measurements to determine fluid flow velocity in the casing, and selecting peaks to obtain measurements of the fluid flow velocity in leaks through the casing into external channels along the casing.

Abstract: Process for the detection of a chemical substance of known mass M with the aid of an apparatus incorporating an ion source (1) producing ions of the substance of mass M from a gaseous atmosphere to be analyzed; a dissociation box (3) in which the ions of the substance of mass M dissociate into fragments of known masses m.sub.1, m.sub.2 . . . m.sub.p, characteristic of the substance of mass M to be identified; an electrostatic analyzer (4) filtering the ions of energy W; a magnetic analyzer (5) operating with an induction B.sub.o in its air gap, characterized in that: the value B.sub.o is fixed by choosing for V and W values V.sub.o, W.sub.o such that an atom of mass M.sub.

Abstract: A device for interfacing between a microbore liquid chromatograph and a mass analyser. In such a device, liquid from the liquid chromatograph is sprayed through a stainless steel capillary tube into the atmospheric pressure ionization chamber of a mass spectrometer. A voltage of e.g., plus or minus 3 KV is applied to the stainless steel tube, and a nebulizing gas, e.g. nitrogen, is directed at high velocity past the tube tip through another tube encircling the stainless steel tube. The combination of the nebulizing gas and the electric potential disperses the liquid at room temperature into a fine mist providing an increased and more stable ion signal without thermal decomposition of the compounds being analysed.

Abstract: This disclosure is concerned with method and apparatus for vaporizing liquid solutions in order to detect, quantitate, and/or determine physical or chemical properties of samples present in liquid solution. Mixtures may be separated by an on-line liquid chromatographic column and the methods used for detection, quantitation, indentification, and/or determination of chemical and physical properties include mass spectrometry, photoionization, flame ionization, electron capture, optical photometry, including UV, visible, and IR regions of the spectrum, light scattering, light emission, atomic absorption, and any other technique suitable for detecting or analyzing molecules or particles in a gaseous or vacuum environment. The method and apparatus involves controlled partial vaporization of the solution.

Abstract: Methods and apparatus for determining susceptibility of a material to a field, such as magnetic susceptibility, provide an elastic support for a sample of that material, and an electric tunneling current through a gap between an electrode and that elastic support. That gap is varied with a magnetic or other field applied to the sample on the elastic support to effect corresponding tunneling current variations or variations in an electrical property of the gap. Magnetic susceptibility of the sample, or other susceptibility of the sample to the applied field, is determined in response to these variations.

Abstract: An electron beam tester (11) utilizes a source (13) of stored electrons to produce a probing beam (14) of short pulses and high intensity. The high intensity improves the signal-to-noise ratio of the potential being measured and is especially suited for measuring potentials in high speed integrated circuits (19) while they are operating. The cyclotron principle is adapted for storing the electrons in an orbital configuration wherein the electrons are clustered in bunches having substantially the same energy level. These characteristics of the electrons in a beam facilitate its operation and control in an electron beam tester for contactless monitoring of voltage potentials in an operating high speed integrated circuit.

Abstract: A method of testing thermal imagers includes heating selected portions of a quantity of a smectic liquid crystal material (9) with a laser (25) such that the material in the selected portions changes from a homeotropic texture in which it is transparent to incident infrared radiation to a focal conic texture in which it scatters incident infrared radiation. An infrared source (27) is arranged to direct infrared radiation onto the quantity (9) so as to read the pattern of selected portions across the quantity.

Abstract: In a radiation image read-out method wherein preliminary read-out is conducted prior to final read-out for adjusting final read-out conditions and/or image processing conditions for a plurality of stimulable phosphor sheets carrying a radiation image of the same object recorded thereon by combination image recording, the preliminary read-out and the final read-out are conducted only for the first stimulable phosphor sheet which is first subjected to the image read-out, and only the final read-out is conducted for the other stimulable phosphor sheets by use of the read-out conditions and/or image processing conditions adjusted on the basis of the image input information obtained by the preliminary read-out of the first stimulable phosphor sheet.

Abstract: A method of measuring an after-glow of a stimulable phosphor sheet comprises the step of detecting an instantaneous light emission after-glow emanated by the stimulable phosphor sheet carrying a radiation image stored thereon by use of a photodetector when the stimulable phosphor sheet is being conveyed toward a system for final read-out after preliminary read-out is finished, thereby measuring the level of the after-glow. A method of adjusting radiation image read-out conditions comprises the steps of creating a histogram of preliminary read-out image signals obtained by preliminary read-out, detecting the instantaneous light emission after-glow by a photodetector, obtaining a signal Sx representing the level of the instantaneous light emission after-glow, and adjusting final read-out conditions and/or image processing conditions based on a value calculated by subtracting the value of the signal Sx from a characteristic value of the preliminary read-out image signals in the histogram.

Abstract: A radiation image read-out apparatus comprises a section for holding a cassette housing an image-recorded stimulable phosphor sheet, a section for holding a magazine housing image-recorded stimulable phosphor sheets, an image read-out section, an erasing section, and a section for holding a tray for housing erased stimulable phosphor sheets. A conveyance system is provided for conveying the stimulable phosphor sheet received from the cassette holding section to the image read-out section, the erasing section and then into the cassette, and conveying the stimulable phosphor sheet received from the magazine holding section to the image read-out section, the erasing section and then into the tray. The erasing section is shorter than the length of a single stimulable phosphor sheet. The erasing section and the tray are adjacent to each other so that the tray supports the leading edge of the stimulable phosphor sheet conveyed at the erasing section.

Abstract: An observation and guide beam apparatus, referred to as a spotter scope, has in addition to a laser guide beam generator an optical daytime channel for daytime spotting or viewing and a day- and nighttime channel for both night and day observations. These channels are harmonized relative to the laser guide beam by the same automatic axial harmonizing device. Further, the day and night channel includes a heat imaging device that is internally harmonized on a long term basis. The scope also has an ocular arm. This combination is especially suitable for use in a weapons system using remote controlled flying bodies, for example. The scope can use any available type of detector or detector technology.

Abstract: A compact stereoscopic thermographic IR viewing device is disclosed, which comprises a thermographic apparatus in front of which two binocular telescopes are arranged. One of the two telescopes images an IR scene in two intermediate images which differ slightly in perspective. These images are separated by stops on the detector of the thermographic apparatus so that an observer notes the scene in perspective through a second binocular telescope.

Abstract: A device for the rapid detection of hydrocarbon fire inside an armored vehicle. Infrared radiation resulting from the appearance of the fire is detected using lithium tantalate as a pyroelectric sensor for producing a voltage signal. A voltage pulse is produced at the beginning of the infrared radiation. Alternatively, the current signal of the pyroelectric sensor may be used and subsequently integrated. Fire is detected by the presence of both infrared and ultraviolet radiation.

Abstract: This invention relates to a supersonic nozzle (2) for injecting a gas into an infrared spectrometer, said nozzle having an aperture (24) that produces a one-dimensional expansion of said gas. The nozzle has an entrance (4) and exit (6) and between the aperture (24) and the exit (6) is a region for one-dimensional expansion of the gas. The region has two windows (14) that extend on either side of said aperture (24) towards said exit, said windows having an interior surface (30) that is set back slightly from said aperture (24). The windows (14) are made of an appropriate material such as zinc selenide to pass infrared rays and allow the gas to expand in one dimension only.

Abstract: In a method for predicting a density of micro crystal defects to be generated in a semiconductor element, an infrared absorption spectrum associated with a silicon wafer, which is used for the manufacture of the semiconductor element, is formed by a spectrum forming system. The spectrum has a first oxygen absorption peak at the wavenumber range of 1150 to 1050 cm.sup.-1 and a second oxygen absorption peak at 530 to 500 cm.sup.-1. First and second coefficients indicating oxygen concentrations at the first and second peaks are read by a reading unit. The density of the micro crystal defects are predicted by using a ratio of the first and second coefficients as a monitor.

Abstract: A steam quality monitor measures the quality of steam flowing in a steam pipe. A measurement cell is connected in the steam pipe so that steam flows through the measurement cell. The cell has two windows aligned along an axis which is traverse to the flow axis of the steam. A source spatially arranged with the windows of the measurement cells provides IR energy which enters the measurement cells through one window and leaves through the other window so that the IR energy passes through the steam flowing in the measurement cell. An IR detector detects the IR energy as it leaves the measurement cell and provides a corresponding signal. The temperature of the steam flowing through the measurement cell is also sensed and a temperature signal provided. Circuitry derives the steam quality of the steam flowing in the steam pipe in accordance with the signal from the IR detector and the temperature signal.

Abstract: The invention relates to a multiple channel readout circuit optimized for a cryogenically operated IR sensor head. The circuit is applicable to the individual channel preamplifiers of a charge injection device (CID) IR sensor. Since the thermal leakage must be minimized, the voltages on the principal current supply path to the individual preamplifiers will vary when a strong signal is present on any channel. Crosstalk is avoided by using a four transistor cascode preamplifier circuit having a source follower output, in which the gate of the transistor, which acts as a load to the two cascoded transistors, is isolated from the drain of the load transistor, connected to a gate load node common to the other channels, and the node connected via a single connection of high thermal impedance to a terminal external to the cryogenic environment, at which filtering may be provided as needed.

Abstract: A nuclear medical diagnostic apparatus detects and displays a radiation emitted from a local area of a body being examined after a radioisotope has been given to the body. The nuclear medical diagnostic apparatus has a function for automatically stopping the display of the detected radiation under certain conditions.

Abstract: A method and portable apparatus for measuring radiation dose and identifying a source radionuclide. Energy correction to calibrate detected charge to .gamma.-ray energy level is made through the use of naturally occurring radiation from 40K in a potassium compound KCl. One embodiment includes a portable scintillator and photomultiplier (PMT) along with an accumulation memory, an input means, a signal processing circuit, a memory and an output means. A warning function informs of an abnormality when the difference between the measured radiation data and the standard data in the device memory exceeds a predetermined value.

Abstract: An apparatus for detecting radioactive contamination in hand-held objects, such as tools used to service a nuclear power facility, is disclosed herein. The apparatus generally comprises a radiation detector assembly having a gas-flow proportional detector, and a platform assembly formed from a perforated sheet of rigid material disposed over the topside of the detector for both supporting the hand-holdable objects and uniformly spacing the object from the detector. The radiation detector assembly is contained within a shielding cabinet having an access opening that is offset out of alignment with the top side of the detector for allowing an operator to deposit and withdraw an object onto and off of the platform. The walls of the shielding cabinet include pocket-like mounting assemblies for releasably holding one or more sheets of lead shielding material so that the amount of background radiation-reducing shielding may be advantageously adjusted.

Abstract: Before being introduced within the intensifier, the grid which is nearest the anode is coated with a layer of electrically conductive material having the property of oxidizing alkali metals. This has the effect of elininating any parasitic illumination of the viewing screen caused by alkali metals unintentionally deposited on the grid at the time of formation of the photocathode.

Abstract: A thermal protection shell for protecting the exterior walls of a radioactive waste container disclosed herein. The shell generally comprises a wall of heat conductive material, such as aluminum or magnesium, which circumscribes and engages the exterior of the waste container walls in intimate, heat-conducting contact under ambient temperature conditions. The thermal coefficient of expansion of the material forming the shell is chosen to be greater than the thermal coefficient of expansion of the material forming the container walls, which are typically steel, so that the heat-conducting contact between the shell and the outer walls is broken when the shell is exposed to a fire. The shell is formed in sections which are rigidly interconnectable by bolt assemblies formed from the same material as the shell itself. The use of such sections allows the shell to be easily mounted over existing radioactive waste containers, and adjusted to fit containers of different diameters.

Abstract: A wafer is aligned by using an alignment light having a longer wavelength than an exposure light. Exposure and alignment are effected through a common reduction lens. A wavefront aberration caused by the use of the long wavelength alignment light is compensated by a hologram. Thus, an alignment precision is improved without exposing a resist layer to a light.

Abstract: A system for cranking/starting a combustion engine and for generating electrical power during engine operation uses an inverter-driven, high efficiency permanent magnet synchronous machine as a cranking/starting motor during a start mode and as an alternator during a run mode. A modified planetary gear assembly provides sufficient torque multiplication during the start mode to enable the synchronous machine to start the engine. One-way clutches allow the planetary gear assembly to provide the torque multiplication in the start mode and 1:1 coupling between the engine crankshaft and the shaft of the synchronous machine after the engine has been started and is operating.

Abstract: A power supply to various electric accesaries of a vehicle is stopped when an instruction of engine starting is given after a engine key switch is turned on. An excitation current of an electromagnetic switch of an engine starter increases gradually with time and after checking various conditions necessary to start the engine therafter, the supply of the excitation current is blocked until a completion of engine starting is decided when the checking shows some problem on engine start and a power supply to the various electric accessaries is allowed after a completion or blocking of the excitation current.

Abstract: An electrical, multi-wire interconnection between the hinged, movable door (3) of a vehicle and its main body (7) across the hinge gap in the form of a planar cable array (10) having a flat, laterally extended cross-section (FIG. 3), provided with a modular trim panel (3A). It includes at its distal, "A" pillar end an end connector (5A), which mates with an electrical connector (5B) in the "A" pillar. The cable fits in an embossed channel, to which it is like configured, in the door frame. When the door is closed, it is sealingly sandwiched between the metal door frame member (3B) and the rubber door seal on the vehicle body. The door may include a remote multiplexing (remux) unit (30), allowing the use of, for example, as few as about eight wires (11), even though the door is fully powered. The planar cable array can be pre-manufactured as, for example, flat ribbon cable, or made on site using a hardenable plastic (FIG. 5A) or tape-type (FIG.

Abstract: A system for selectively operating a plurality of appliances connected in parallel with one another and with a power supply via single cable which carries control signals of differing characteristics generated from a control signal source, wherein each appliance has an associated control device also powered from the power supply, said control devices being connected in series to provide a control signal-carrying line thereof, and each appliance control device has means for discriminating between control signals of different characteristics and has means for routing the control signals accordingly so that one or more selected appliances are operated in dependence on the characteristic of an arriving signal.

Abstract: A constant current battery charger includes a bucking regulator comprising a power switch transistor, a diode, an inductor and a voltage sensitive switch with adjustable delay for controlling the power switch transistor. The hysteresis or delay is obtained with a Schmitt trigger and the effect is a stable pulse width modulator in which the duty cycle of the power switch transistor is varied. A temperature sensor adds resistance to change the sensitivity of the switch and reduce charging current when a predetermined battery temperature is reached. A speed up circuit consisting of a shorting transistor is connected across the base-emitter of the switch transistor.

Abstract: A device-implemented method for driving a ferrimagnetic load (10), such as a phase shifter in an antenna array, which precisely meters the amount of magnetic flux imparted to the load (10) by sensing the voltage applied to a winding and integrating the sensed voltage over time. The time intergrated voltage is proportional to the magnetic flux imparted to the load (10) and is constantly compared to a preprogrammed value stored in a memory (18). When the sensed voltage reaches the preprogrammed value, the voltage is removed from the load (10) so that a metered amount of magnetic flux, proportional to the preprogrammed value, remains in the load (10). The load (10) is initially reset by delivering current in one direction through its winding until saturation is reached. The load (10) is set with a metered amount of magnetic flux by delivering current in the opposite direction through the winding.

Abstract: A constant propagation delay current reference is provided having an external source providing a reference frequency signal. A phase lock loop is provided which is responsive to the reference frequency signal and to an operating frequency signal to provide a current reference signal at the output of the loop. The current reference signal is provided to a current to frequency converter which generates the operating frequency signal. A current mirror, also coupled to the phase lock loop output provides an output current proportional to the current reference signal which is suitable for providing the injector current for I.sup.2 L devices. The output current tracks the process, voltage and temperature variations of the integrated circuit, allowing the injector currents to be optimized for maintaining constant propagation delay in the circuits being powered.

Abstract: A sample and hold circuit which achieves both a fast acquisition time and a low droop rate is disclosed. FET or analog switches form a sample switch. When this circuit is in a hold mode the sample switch is biased so that no voltage appears across the switch. However, only one switch or a plurality of switches in parallel connect between a driving buffer and hold capacitor so that a fast acquisition time is achieved when this circuit is in a sample mode.

Abstract: An n-imput CMOS NOR-gate having n nMOS transistors connected in parallel with their inputs connected to different input terminals and their outputs connected to a common output terminal. First and second sets of n pMOS transistors each are each connected in series between a positive voltage source and the output terminal. The inputs of the first set of pMOS transistors are connected to the input terminals in order, and the inputs of the second set of pMOS transistors are connected to the input terminals in the reverse order.

Abstract: High current capacity output drivers for digital devices have output noise reduced and more quickly achieve stability by the insertion of resistance in series with inherent, parasitic inductance. The resistance may be one or more fixed resistances formed in the same circuit as the drivers. The resistance may also include sensor devices that selectively increase the resistance of the output drivers in accordance with the voltage produced by the parasitic inductors. Both fixed resistances and sensor devices may be used together.

Abstract: A zero-power bit circuit comprised in part of a pair of single-level poly transistors with opposite impurity-type channels, the pair connected to accomplish the programming function of a floating-gate transistor. The circuit includes three programming/isolating transistors and an inverter-buffer.

Abstract: An electronic delay control circuit provides small, constantly variable delays to an input pulse signal without altering the pulse width of the input signal. The input pulse signal together with a first reference signal are input to three comparators in parallel. The output of one comparator is a pulse signal corresponding to the input pulse signal, and the outputs of the other two comparators are tied together and input to a pulse shaping network to produce delay current pulses for the leading and trailing edges of the input pulse signal. The delay current pulses are added to the output pulse signal to produce a delayed output pulse signal. The delay current pulses are a function of the amount of a constant current steered between the two comparators as determined by a delay control signal.

Abstract: A permanent magnet made of a pulverizable magnetic material is positioned immediately adjacent to a quantity of an explosive. An electrically conductive coil surrounds the permanent magnet and the explosive. A detonator is provided for detonating the explosive. The explosive is capable, upon detonation, of rapidly removing the magnet from inside the coil by disintegration, by collapsing the magnet or by causing high velocity omni-directional dispersal of a plurality of minute fractional parts of the permanent magnet. A single-pulse high voltage electrical signal is thereby induced in the coil.

Abstract: The rotor of an electric machine with a superconducting field winding has a hollow support structure with the superconducting winding, enclosed in a shrouding cylinder. Formed inside the shrouding cylinder, in the support structure, is a ring header communicating with the cooling ducts for the superconducting winding. In the internal cavity of the support structure is a trough for feeding the coolant communicating with the ring header in the large tooth area by means of radial holes spaced apart along the rotor axis, which receive heat-conductors with ducts for transferring the coolant from the trough to the ring header. On the periphery of the support structure, in the portion or sector of the support structure tooth, is formed a recess communicating with the ring header and having mounted therein other heat-conducting members extending in the radial direction and thermally insulated both from the support structure and from the heat-conductors.

Abstract: A synchronous machine having a rotor which is fixed to a shaft supported in bearings, said machine having its rotor (1) and stator (2) windings cooled by very low temperature helium, with each of the windings and the gap (4) therebetween being in a vacuum enclosures. The said rotor and stator windings and the said gap are disposed inside a common enclosure (13) connected to a common vacuum source (17), and said gap is separated from the bearings (14) of the rotor shaft (3) by vacuum-resisting oil seals (15) and by cryogenic traps (16).

Abstract: A fusible, thermally conductive material (50) within which coils (40) of electric motor (10) are packed, cools the coils by melting and rejecting the heat of fusion thereof to the motor's stator core (20).

Abstract: A dual speed sensor pickup assembly (140) for sensing the rotational velocity of two independently rotatable, closely axially spaced exciter rotors (116 and 118) includes two pole piece assemblies (136 and 138) having axes skewed relative to one another, but radial relative to the common axes of rotation (24) of the exciter rotors. Applications include drive axles and antilock brakes.

Abstract: A motor having a stator and a rotor core rotatable therein and a rotor shaft secured for rotation with the rotor core comprising a motor housing, the stator supported by the motor housing, the rotor core having a counterbore extending partially along the axial length thereof and circumscribing a portion of the rotor shaft, the motor housing including a cylindrical unit bearing tower extending into the counterbore and surrounding the portion of the rotor shaft whereby the portion of the rotor shaft is free to rotate in a bore in the unit bearing tower.