Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.

Abstract: The hand-held electro-discharge device to remove boluses of material from a workpiece. In some implementations a conductive electrode and its supporting ground pin are immersed in a dielectric fluid contained in a hood or cavity near or at the electrode's distal tip an removably sealed to a conductive workpiece. A flushing inlet and outlet in fluid communication with said hood provide a flushing fluid, which may also be a dielectric fluid to remove FOD and cool.

Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.

Abstract: A telephone loop monitoring and isolation device which can be connected to a wireless telephone subscriber unit providing an interface between an analog or digital central station network and the internal telephone wiring of a subscribers premises. The device is also operable with a cable telephone subscriber unit. The device provides passive real time loop status information as well as loop isolation if the voltage across the loop falls below a predetermined level. When normal loop impedance conditions are restored, the subscriber loop is automatically reconnected to the subscriber telephone unit. The device is effective for examining open circuit and abnormal impedance conditions and provides loop status information to the telephone subscriber.

Abstract: A drive system for a digitizing scanning apparatus of the type which scans an image, such as a light transmissive document in the nature of an x-ray or the like, and enables generation of digital signals representative of that image. The drive system is uniquely designed with three main drive rollers and a pair of idler rollers operable in combination therewith for driving the light transmissive document in such manner that there is a relatively constant drive force on the document which is independent of document thickness and which also allows for a uniform driving movement without any shatter or vibration in the document, which would otherwise distort and materially interfere with proper screening and digitizing of the document.

Abstract: Improved linear sensor array and scanner apparatus and operating methods to reduce noise and streaking in a digitized image produced by the scanner. The scanner uses a charge coupled device linear sensor array having a pair of sensor output channels, each for processing one half of the array sensor elements which are interleaved with the other half of the sensor elements. To provide a reference, the CCD outputs are read a plurality of times with the system on but no article in scanning position, with the multiple readings for each sensor element being averaged to provide an average reference level therefor. These averages are stored in digital form, each to provide a calibration factor (multiplier) for the corresponding readings of the array during scanning of an article. During scanning, the output corresponding to each sensor element is multiplied by the corresponding calibration factor to normalize each output to a common reference.

Abstract: A digitizing scanning apparatus for scanning and recording an image in digital form for ultimate reproduction. The image preferably adopts the form of or is included in a light transmissive document such as an X-ray film or the like. The document is moved in a first direction through the apparatus in a document feeding path and exposed to a source of light which extends transversely with respect to the direction of movement of the document and is located with respect to a scanning element, such as a charge coupled diode. As the document is moved into the housing past the charge coupled diode, light levels are calibrated for the dark and light areas of the document. The document is then moved in a second direction, opposite the first direction, and data is read from the document and digitized and stored in a central storage for ultimate reproduction. A unique drive system is provided for moving the document in both directions in the document feeding path.

Abstract: A scanning apparatus for scanning and recording a color image. A source of light having a certain flicker rate illuminates the color image, and a scanning element, such as a charge-coupled device, scans the color image during scanning periods to generate electrical signals which are representative of the color image. Each of the scanning periods is equal to the reciprocal of the flicker rate to eliminate effects of the flicker on the electrical signals. A color filter with different-colored filter segments located between the scanning element and the color image enables the scanning element to produce electrical signals which are representative of different colors in the color image. The color filter is rotated at a rate such that each filter segment is interposed between the scanning element and the color image for a rotation period which is greater than the reciprocal of the flicker rate. The electrical signals are integrated in the scanning element for a first period (e.g., 8.

Abstract: A digitizing scanning apparatus for scanning and recording an image in digital format for ultimate reproduction. The apparatus comprises a base and an upstanding tower structure. At least one scanning element, such as a charged coupled device, is carried by an outwardly extending arm on the upstanding tower structure. A source of light is carried by another outwardly extending arm on the upstanding tower structure and is moveable with the scanning element so that there is a constant field of light on any portion of an image as it is being scanned. The apparatus utilizes a pair of horizontal support rods with a unique bearing structure such that a carriage which enables movement of the tower structure is essentially self-aligning and properly supported with a minimum amount of frictional effects. Moreover, the tower structure is removable from and connected to the base housing by merely inserting a neck of the tower structure into a pocket associated with the base housing.

Abstract: A photographic film printer that forms an image on film based upon received or stored digital information is provided. While maintained in a stationary position, the film is exposed in a sequence of raster scans by a rotating disk traversing the photographic film surface. At least one optical film is attached to the rotating disk in a manner that transmits optical energy directed towards the center of the disk to a peripheral location on the disk. Exposure of the film occurs by controlling the emission of optical energy by the fiber in accordance with the received or stored digital information as the peripheral edge of the disk rotates past the film surface.

Abstract: A sound-to-optic translator system for the hard-of-hearing is disclosed. Light-emitting diodes of different colors provide sources of light that are hyperoptically (out-of-focus) located directly in front of the pupil of the eye and along the normal line-of-sight to project overlapping color discs onto the macula area of the retina to be sensed by the cones. The diodes are supported by a T member having a width approximately one-half or less than the diameter of the pupil under normal reading light intensity and positioned at less than distance of focus of the eye. Audio frequencies are separated into a plurality of bands by bandpass filters and outputs of the respective filters drive respective diodes to hyperoptically transmit colors onto the macula.

Abstract: A solar panel unit comprises:A. a loop-shaped plastic frame, bounding an open zone, the frame having a channel section,B. a plastic sheet extending across the open zone, andC. insert means retained in the channel section and holding the sheet to the frame,D. the sheet having woven construction and defining air filled interstices distributed over the sheet area across the open zone.

Abstract: Conservation of energy of a swimming pool is provided by an attractively colored polyethylene panel secured to a circular frame which panel cover and frame are stable, and will not disintegrate due to direct rays of the sun. The panel passes and traps the heat of the sun rays during the day and maintains a pool cover to prevent substantial loss of heat and thereby retain the heat of the pool. The absorption of heat and reduction of evaporation is effective primarily to reduce fuel of the pool heater and also reduces consumption of chemicals and water.