Abstract: A miniature station protector module for communication systems includes a hollow housing having a top surface and open bottom. A pair of line terminals and ground terminals are disposed in the housings top surface and extend inside the hollow housing, with the ground terminal disposed intermediate the pair of line terminals. A non-conductive printed circuit board with conductive paths thereon is affixed to the pair of line terminals and the ground terminal. A holding assembly is affixed to the ground terminal within the hollow housing and is adapted to receive a surge arrester therein. The surge arrester has at least a pair of electrodes and a ground terminal, with the ground terminal being an electrically conductive contact with the housing ground terminal, each one of the pair of surge arrester electrodes are in electrically conductive contact with one of the pair of line terminals. A protective housing circumscribes the surge arrester means and portions of the holding assembly means.

Abstract: A miniature station protector module for communication systems includes a hollow housing having a top surface and open bottom. A pair of line terminals and ground terminals are disposed in the housings top surface and extend inside the hollow housing, with the ground terminal disposed intermediate the pair of line terminals. A non-conductive printed circuit board with conductive paths thereon is affixed to the pair of line terminals and the ground terminal. A holding assembly is affixed to the ground terminal within the hollow housing and is adapted to receive a surge arrester therein. The surge arrester has at least a pair of electrodes and a ground terminal, with the ground terminal being an electrically conductive contact with the housing ground terminal, each one of the pair of surge arrester electrodes are in electrically conductive contact with one of the pair of line terminals. A protective housing circumscribes the surge arrester and portions of the holding assembly.

Abstract: An insulation displacement terminal connector for receiving an insulated wire therein suitable for use in a protective housing allows the simultaneous or separate use of a relatively wide range of insulated wires to be used therewith and permits a smaller diameter wire to be utilized in the same slot where a larger diameter wire was used previously.

Abstract: In construction of an earphone set incorporating a vibratory membrane accompanied with a ceramic wafer, a coactive magnetic electroacoustic conversion is arranged facing the vibratory membrane in a manner such that the vibratory membrane reproduces human voices on receipt of corresponding electric acoustic signals whereas the conversion unit issues electric acoustic signals on collection of corresponding human voices at the vibratory membrane.

Abstract: The present invention relates to solid state surge protectors, having thermally sensitive fusible fail short protection associated therewith, enclosed in a hollow housing which provides three terminals and is specifically designed to be the same volume as gas tube surge arresters presently in use so that it may readily be replaced in any assembly which utilizes a gas tube arrester at the present time.

Abstract: An energy efficient apparatus suitable for use in hot, arid climates wherein a source of water is available includes in combination; a rotating wheel member which utilizes the buoyancy of outwardly extending members and a pair of temperature sensitive devices responsive to the change in ambient temperature to cause the moment about the axis of the rotating wheel member to increase, thereby aiding in the rotation of the rotating wheel member providing continuous output energy. The increase of the mechanical moment is caused by the mechanical change in position of an outwardly extending member and provides a portion of the energy obtained thereby to a spring and escapement mechanism which further couples additional energy to support the rotation of the rotating wheel member.

Abstract: A universal station identification circuit arrangement for use with central office equipment that utilizes either differential or longitudinal detection methods is adapted to be connected to the tip party's subscriber drop in a two-party line without requiring access to or rewiring of the tip party's telephone. The circuit arrangement may be fabricated in a single unit which may include a ringer isolator together with ANI mark circuits.

Abstract: An overvoltage surge protector and housing for telephone communication lines to protect equipment connected thereto includes an insulated housing having one terminal disposed therein which is adapted to be connected to earth ground and a second terminal disposed in a removable assembly which includes the means for connection to the communication line as an integral part thereof. The overvoltage surge protector device is adapted to be retained within the second terminal and, when removed for replacement by a service technician, requires that the communication line affixed to the terminal be removed from the terminal in order to remove the protector device, thus requiring the communication lines to be reconnected when the defective protective device is removed and/or replaced.

Abstract: A combination power and communication line protection apparatus includes a housing which contains a power line plug adapted to be received by a conventional wall power receptacle and a receptacle suitable for receiving a male line plug from equipment to be protected in addition to a pair of communication line or modular phone jacks into which an outgoing communication line may be received together with a data link communication line in parallel therewith. The apparatus provides an overvoltage protection for a pair of communication lines and an overvoltage surge protector for the power lines and utilizes the power line ground connection to provide the necesssary ground to protect the communication lines from overvoltages thereon.

Abstract: The present invention is directed to a composition which includes an anionic fatty alcohol metal sulfate surfactant, a nonionic substituted poly (ethylene oxide) surfactant, an ethanolamine, zinc and hydroxyacetic acid. A method for removing scale from a surface is taught.

Abstract: A wet-dry syringe for combining and mixing a liquid and a solid medicament or at least two dissimilar liquid medicaments prior to the application thereof to a patient includes a first vial having liquid or solid medicament disposed between a pair of identical vial seals. A second vial functions as a piston rod and includes a pair of end seals with a liquid medicament disposed therein. One of the second vial seals includes a hollow piercing needle which when utilized to pierce one end seal of the first vial causes the medicament therein to flow into the first vial thereby mixing the medicaments prior to application to a patient by means of a needle piercing assembly which pierces the second of the first vial seals and the patient to which the mixed medicaments are to be infused. The second vial functions as a piston rod and aides in the discharge of the medicaments.

Abstract: A miniature surge protector for use in telephone central offices, or the like which are provided with terminal blocks for communication lines includes an in-line over-current coil arrangement which grounds each communication line if an overcurrent flows therethrough and is additionally provided with a gas tube surge protector and an auxiliary air gap disposed across a pair of communication lines and a common ground terminal, thus providing overvoltage and overcurrent protection to a pair of telephone communication lines.

Abstract: An equipment protector and energy saving apparatus includes transient protection as well as under voltage protection by preventing the reduced voltage from being applied to motors and other apparatuses that may be damaged because of insufficient voltage being applied thereto. Provision is incorporated to protect for momentary low voltage transients and turn-on prevention, if the line voltage should be reduced below a predetermined value. Provision is also made for correcting for a small increase in line voltage which may occur when the operating equipment is removed from the line. A timing device may be incorporated therein in order to remove the protected equipment from the line for predetermined intervals of time.

Abstract: Apparatus and method for measuring the thickness of a test piece by obtaining the acoustic velocity of the test piece where an ultrasonic wave is refracted into the test piece at a first point and the wave travels substantially parallel to the surface and the transit time to a second point where the wave is refracted out of the test piece is measured. The distance between the first and second points is known and the ultrasonic wave is initially transmitted into a member of different acoustic velocity than the test piece to produce the subsurface wave in the test piece.

Abstract: A universal station identification circuit arrangement for use with central office equipment that utilizes either differential or longitudinal detection methods is adapted to be connected to the tip party's subscribers drop in a two-party line without requiring access to or rewiring of the tip party's telephone. The circuit arrangement may be fabricated in a single unit which includes a ringer isolator and ANI mark circuits. The ringer isolator and the ANI mark circuits may also be used individually.

Abstract: An overvoltage surge arrester which has a reduced turn on time and is suitable for use at low voltage levels to protect electronic equipment, such as telephone repeaters and the like; this protective device includes a core of semiconductor material provided with a predetermined surface creepage path thereacross and electrically conductive terminals (electrodes) disposed on each end thereof. The conductive terminals or electrodes may extend towards each other to provide a secondary, backup discharge gap. The surge arrester may be used as an integral part of a gas filled device with the conductive electrodes connected between a line electrode and ground electrode thereof.

Abstract: A high pressure liquid filter vessel fabricated of non-metallic materials and used for the filtering of liquid in a permanent installation provides for a simplified method of replacing the filter bag and includes a removable cover which displaces a relatively large volume of liquid. Removal of the cover from the filter housing reduces the liquid level within the housing to a level below the lip of the filter bag, making it easier to grab the lip thereof, and remove the bag without coming into contact with the liquid being filtered. The bracket used for retaining the cover on the filter housing prevents distortion thereof and makes the filter ideally suitable for high pressure filter applications where corrosive liquids are involved.

Abstract: An audio-visual line test termination device for providing a characteristic signature to the telephone central office and a visual and an audible signal to the customer when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a miniature audio indicator, a light source and a minimum of associated electrical components to indicate to the central office test operator and the customer that the telephone subscriber line is in operating order. The instant invention may be utilized together with a housing that may be permanently installed across the subscriber line.

Abstract: A circuit arrangement utilized for extending the ringing range of a single party telephone service utilized on long rural line loops where the ringer and a blocking capacitor of the subscriber's telephone instrument has been connected across the tip and ring electrical conductors of the loop includes; a pair of terminals connected to the tip and ring conductors of the subscriber's line, a zener diode connected from one of the electrical conductors with a capacitor connected in parallel therewith. A switching device is connected in series with the parallel connection of the zener diode and capacitor providing a current path to a reference ground.