Abstract: A clogging shoe tap device having a first plate for attachment to a shoe, and a second plate pivotally attached to the first plate along a transverse line of attachment, the second plate also having a transverse balance axis, wherein the transverse line of attachment is offset from the transverse balance axis, causing the tapping edge to hang downwardly when in the rest position.

Abstract: A sensor for detecting volatile organic compounds in ambient air by positioning a detection cell adjacent a gas discharge device to cause molecules of organic compounds to become ionized, and applying an electric field across the collection cell to attract ions and free electrons formed in the cell to develop a current, and amplifying the current magnitude so created.

Abstract: An apparatus and method for simulating a package pressure burst condition for calibrating a package pressure burst detector, where the package pressure burst detector is connected to a pressure tank, and the detector applies an air flow into the tank to gradually increase the tank pressure, and the tank has an output relief conduit connected to a pressure relief valve via a pressure switch, wherein the pressure relief valve is activated for a predetermined time when the pressure switch detects a preset pressure in the tank.

Abstract: A low voltage and low current compression circuit for connection between a telephone receiver and a telephone headset earphone, the circuit having an operational amplifier with variable gain, the gain being determined by the output signal level and by the presence or absence of transient signal spikes generated by the telephone receiver. The amplifier is connected to a voltage clipper circuit and a JFET feedback device, wherein the JFET operates as a variable resistance to control the signal feedback.

Abstract: A fixture for testing a sealed container for possible leakage, having a removable cover and a silicon gel gasket affixed to the undersurface of the cover, and having a lower housing with a cavity for receiving the sealed container, the container top surface being isolated from the rest of the container surfaces by the silicon gel gasket.

Abstract: A non-destructive method for testing sealed packages for leakage, particularly packages having a gas-permeable portion and a non-gas-permeable portion, by applying a temporary barrier over the gas-permeable portion, wherein the temporary barrier has two apertures, and enclosing the package in a testing chamber having a carrier gas flowing through it to a detector, and passing a tracer gas through the package interior via the two apertures in the temporary barrier.

Abstract: A non-destructive method for testing sealed packages for leakage, particularly packages having a gas-permeable portion and a non-gas-permeable portion, by applying a temporary barrier over the gas-permeable portion, wherein the temporary barrier has an aperture, and connecting the aperture to a pressure monitor, and recording the pressure drop in the sealed package, via the aperture, for a predetermined time.

Abstract: A circuit for measuring the relative absorption signals from an infrared detector to measure gas concentrations in the detector, wherein an absorption gas wavelength signal is compared to a reference gas wavelength signal, through circuits and a computer processor, together having automatic compensation for absorption variables and which permit the measurement of gas absorption by use of Beer's Law equations.

Abstract: A selectable impedance matching circuit for matching the impedance of a telephone handset adapted for either a carbon microphone input or an electronic microphone input to the impedance of a headset microphone. The selectable impedance matching circuit includes a switch for connecting the headset microphone to the handset microphone input via a full wave bridge circuit, or connecting the headset microphone to the handset microphone input via an isolation transformer and resistor load.

Abstract: A method for validating permeation measurements through closed containers including closure members, by making a first measurement of permeation through a container of a first size, and making a second measurement of permeation through a container of a second size, both with the same closure members, and subtracting the permeation measurement contributions respectively made by the closure members.

Abstract: A fixture for holding a plastic or glass container and container closure member in a fixed position for measurement of the gases escaping through and around the closure member. A first clamp positions a closure cover over the closure member, and a second clamp positions a slidable yoke about the bottle neck, wherein the first and second clamps are sealably affixed together; the closure cover has a gas passageway for purging the gas from the chamber formed by the two clamps, and for collecting gas leaking through the closure member.

Abstract: An apparatus for measuring and comparing the permeant transmission rate through film material on a moving conveyor, including a first and second chamber through which the film material is moved, a permeant supply to the first chamber and a permeant detector connected to the second chamber. A computer processor is connected to the detector to quantify the detected amounts of permeant and to compare the detected permeant amounts with similar amounts detected for a different material sample, and for determining the permeant transmission rate characteristics of the film material by such comparison.

Abstract: A method and apparatus for performing direct memory address (DMA) operations between a requestor and responder device by prestoring, for each device, a logical token and offset value which is recognizable by the device as an indicia to identify one or more local memory addresses within the device, and initiating a DMA operation within the requestor device by the requestor device transferring the token and offset value to the responder device, the responder device identifying a responder device local memory address by translation of the token and offset value, and the responder device accessing the identified responder local memory address for data transfer, associated with the token and offset, and the requestor device identifying a requestor device local memory address for completing the data transfer.

Abstract: A method and apparatus for incorporating windowing techniques into computer systems having a host processor executing applications programs, and interconnected through a plurality of controllers to a number of non-programmable and programmable terminals, by distributing the processing steps required for windowing between the host processor and the controllers; the host processor generates a data stream defining the window parameters, the data stream is receivable by controllers for either programmable or non-programmable terminals, each controller being adapted to construct and display the window on the display screen(s) which it controls.

Abstract: A method of removing conductors in inner layers of circuit boards by applying a constant heating current for a predetermined time period, and then applying an increasing-magnitude current until the conductor vaporizes.

Abstract: An electrostatic spray gun is provided with a spraying voltage control. The contol is produced by Hall effect or magnetoresistive circuitry incorporated with the circuitry of the spray gun. A variably positionable magnet is provided so that the operator may selectively adjust the spraying voltage by positioning the magnet relative to the Hall effect circuitry.

Abstract: A DC motor drive system for mechanically linking to a reciprocable pump, having safety circuits for disconnecting power from the system upon detection of excessive line voltage variations, excessive line current variations, excessive pressure demands, and electrical and mechanical faults which may occur in system operation.