Abstract: Instrumentation and procedures for detecting geological anomalies occurring in layered coal formations. The instrumentation comprises a medium frequency continuous wave narrowband FM transmitter and receiver pair. Two instrument configurations are disclosed with one being a portable instrument for use within an existing mined area and another being a downhole instrument for insertion into boreholes in unmined areas. Survey procedures are provided to detect anomolies through signal attenuation, path attenuation and signal phase shift. Continuity measurements provide data to determine the existance of anomalies. Tomographic techniques are employed to provide a visual image of the anomaly. Computer aided reconstruction techniques provide such visual images from the generated data.

Abstract: A micro disk for data storage has a media portion of flat circular shape with a central opening therein. A hub portion has a pilot protrusion that interfits with the central opening to mechanically lock the media portion against rotation on the hub portion. The media portion is supported adjacent the central opening to maximize the unsupported radial dimension from the media support to the inner recording track. Thus good flexiblity at the inner recording track of the media portion compensates for variations of the spindle-to-head dimension in disk drive systems and makes the disk suitable for double sided, high density, data storage applications. A modified hub portion is centered on a drive spindle by a leaf spring within the hub portion.

Abstract: A device having a universal receiver transmitter, a modem, and a mode selector switch. The mode selector switch is used to switch the serial data side of the universal receiver transmitter between the modem and the host terminal whereby the universal modem receiver transmitter can be substituted into a host terminal where a universal receiver transmitter had been located, and the universal modem receiver transmitter can perform the function of the universal receiver transmitter or can perform as a universal receiver transmitter and modem, facilitating data format conversion between formats appropriate to the host terminals parallel data bus and a format appropriate for telephone line data transmission.

Abstract: A nondestructive examination method and apparatus for high resolution detection of cracks, defects or anomalies in radioactivity contaminated materials. The method relies upon radioactivity being carried by the normal reactor environment, or by an added radioactive penetrant fluid, to the cracks, defects or anomalies. Detection of this radioactivity by a narrow well defined beam gives an improved measurement of the location and size of the cracks, defects or anomalies. The apparatus includes a sensor mounted on a remotely controlled framework. The sensor includes shielding to direct a very narrow beam of gamma radiation to a scintillation crystal and photomultiplier tube which converts the radiation into electrical signals. The signals are counted by count rate means and converted to digital form and stored. Survey procedures are provided both for detecting cracks and for characterizing cracks once discovered.

Abstract: Disclosed is a preamplifier which is responsive to a physiological potential developed by a subject and operative to develop a potential suitably isolated therefrom, the preamplifier including a pair of input networks for receiving therebetween the physiological potential, a pair of operational amplifiers each connected in a unity (voltage) gain, voltage follower, configuration and each driven by a respective one of the input networks, a low resistance resistor connected between the voltage followers to directly develop from the potential a current of suitable level for directly driving an optical isolator, and an optical isolator having an input portion which is connected in the feedback path of one of the operational amplifiers so as to be driven by the current and an output portion at which the optical isolator develops the isolated potential.

Abstract: A telephone unit having a plurality of lines which connect to a PBX and having a microprocessor which transmits and receives data over a digital line between telephone units associated in a group such that a direct forwarding feature is controlled by the microprocessor altering the ring arrangement among the telephones in the group. The telephone unit also has a speakerphone which is controlled by the microprocessor. Each telephone unit has means for monitoring the status of the lines associated with it and providing data to the microprocessor as to line status.

Abstract: A fish attraction device having a case and wing and wing support members. The wing automatically assumes a diving angle when trolling and an upward angle when a fish is hooked. The case may be provided with a flashing light circuit which has a phosphorescent coated light bulb.

Abstract: An electronic ballast for energizing one or more gaseous-discharge lamps and for regulating the power consumed thereby, the ballast including a power supply for providing a source of DC power between a pair of outputs, a pair of transistors connected as switches in series between the power-supply outputs, the transistors for selectively coupling to the juncture thereof positive and negative potentials, a voltage-conditioning and current-limiting network for energizing the lamp from the potential developed between the transistor juncture and a power-supply common, and a pulse generator for developing pulses for driving each of the transistors in turn whereby a potential is developed at the transistor juncture which alternates as positive-going and negative-going pulses each separated by a dead time, the pulse generator for monitoring the power consumption level of the lamp and responsive thereto operative to vary the frequency and/or the width of the transistor driving pulses whereby the lamp consumption is re

Abstract: A short arc lamp includes a window assembly which can be fitted together and secured to a hollow cylindrical body member of the lamp in a single braze. The window assembly includes a transparent window, a tubular cowling member, a retaining ring and struts for supporting a cathode within the lamp. The lamp further includes a hollow concave reflecting shell which is held in place within the first body member by a second hollow cylindrical body member and a dielectric spacer ring.

Abstract: An electronic identification and recognition system which has a battery powered identifier. The reader section radiates stimulus to the identifier section. A battery is switched on and power a clock and memory which in turn vary the reactance of the identifier antenna circuit. The change in reactance affects the phase angle of the voltage within the reader antenna. The phase angle changes are detected and recorded by the reader section such that the internal code of the identifier section is determined.

Abstract: Apparatus for transferring electrical power between a power supplying apparatus and power consuming apparatus and having a separable high frequency transformer with a primary permanently mounted to the power supply apparatus and a secondary mounted about the power consuming apparatus. A charging control circuit mounted on the consuming apparatus, e.g. a mobile vehicle includes means for detecting current and voltage delivered through the transformer, and also for monitoring storage batteries within the vehicle. The power supply apparatus includes a power supply circuit comprising a ferrite core transformer and capacitor forming a parallel resonant circuit. The primaries of the transformer are alternately driven by a driver about opposing polarities. The drivers are controlled by a voltage-controlled pulse-width modulator which provides a square wave input to the drivers to cause them to alternatively energize the ferrite core transformer.

Abstract: An electronic identification and recognition system which detects vector phase angle changes. The recognition section radiates power to the identification section. The phase angle of the current in the identifier antenna is determined by a clock and memory system which varies the reactance of the identifier antenna circuit. The change in reactance affects the phase angle of the voltage within the reader antenna. The phase angle changes are detected and recorded by the recognition section such that the internal code of the identifier section is determined.

Abstract: A telephone activated power controller comprised of an electrical power inlet and a number of power outlets for supplying power to the devices of a computer or other system. A detection circuit detects telephone rings and off-hook conditions and powers up the system. A remote control circuit allows the computer to keep the power on after hang-up or manual power-off. A status sensor circuit tells the computer if the device has been turned on manually or remotely. An inhibit circuit prevents the device from responding to a telephone ring or off-hook condition if it is engaged. The controller also has a surge protection circuit to prevent large voltages or current from reaching the power outlets.

Abstract: Disclosed is a unit for interfacing an 82586-type local-communications controller to a modem of the type used in an RF network, the unit employing both an NRZI-to-NRZ converter which includes an algorithmic-state machine for converting packets encoded in NRZI format to NRZ format and for recovering the clocking information and a comparator for comparing successive check-sum portions derived from a packet for transmission in the network with similar portions derived from an echo packet received from the network to detect a packet collision.

Abstract: A coin counting device for simultaneously counting a number of coins, all of which are of a selected denomination. The device includes a hopper, an inclined planar member to receive coins from the hopper, members mounted to prevent coins from rolling down the planar member and to prevent coins from sliding down the planar member atop one another. The device also includes an array of pin members to disperse the coins transversely across the surface of the planar member. Gate means are mounted at the bottom edge of the inclined planar member to count coins as they slide passed.

Abstract: A test probe head assembly having a probe assembly comprising a plurality of probe arms with terminal probe-points mounted on a support member with means for transmitting electrical signals between an external signal source and the probe's arms. The probe-points are resiliently mounted on the probe assembly which is itself capable of deflection.

Abstract: A quick release closure for bottles which provides access to fluids contained therein. The closure includes a U-shaped spider portion having two opposed pairs of legs, and a disk-shaped plug portion having two opposed pairs of slots for receiving the legs and for fitting within the spider. Each leg includes an inward facing lip at a distal end for engaging a flange around a bottle neck, and an outward seal face for abutting an O-ring encircling the plug. The legs also include, at a proximal end, an inward facing wedge for engaging the slots of the plug whereby the legs may be urged outward as the plug rides up over the wedge. The plug further includes a ring-shaped cavity for sealingly receiving the mouth of a bottle, and a pair of fluid channels, having internal openings formed within the ring-shaped cavity, and external openings formed between the slots of the plug.

Abstract: An emulator for non-fixed instruction set VLSI devices having a microprogrammable emulator controller which can be used with a variety of VLSI devices and provide in-circuit emulation for general VLSI technology with capabilities comparable to the in-channel emulation capabilities previously available for fixed instruction set MOS microprocessors. This includes a device specific emulator head which is controlled by the emulator controller to emulate a VLSI device in a target machine. The VLSI device to be emulated is removed from the target machine and a device plug of the emulator head is inserted into the target machine. The VLSI device is placed in a socket in the emulator head. The emulator controller monitors instructions sent from the target machine to the VLSI device and provides instructions to the VLSI device.

Abstract: A multiple channel communications system and method for communication among multiple channels using a channel selectable MODEM. The system is comprised of a coaxial cable, a variety of interface units with attached communicating devices and a channel bridge. The interface units include a MODEM and a microprocessor based support element adapted for the attached communicating device. The channel bridge includes two or more .[.MODEM's.]. .Iadd.MODEMs .Iaddend.and a microprocessor based computer for receiving data from one MODEM and transmitting the data on another MODEM.