Abstract: A flexible vacuum cleaner hose having an electric lead integral therewith and extending from one end to the other of said hose, a control switch and an overload device carried by said hose and in circuit with said lead, and electric cords extending from the ends of said hose, also in circuit with the lead, providing an overload protected current carrying vacuum cleaner hose for energizing a vacuum cleaner power head.

Abstract: The ventilation air terminal device for supplying heated, air conditioned or ventilating air to an enclosure comprises cylindrically tubular transition with a mounting bracket thereon for mounting the terminal device with respect to the wall, ceiling or floor. The terminal device extends through an opening in the wall, ceiling or floor, and the mounting bracket secures it flush with the inside of the wall, ceiling or floor. A dome-shaped, circular air diffuser secures over the front of the terminal device to direct air discharging therefrom.

Abstract: The invention is directed to an electrical connector with multi-pin/socket contacts suitable for use in locations where the receptacle assembly is attached to a support, such as the underside of an aircraft wing, and the plug assembly is mounted on a separate detachable structure, such as a pylon. The plug assembly engages the receptacle through collet fingertips. A separate, but not independent, capsule assembly is mated with the receptacle socket contacts by vertical movement imparted by a cam assembly. The mated/engaged connector is locked in that relation by balls juxtaposed between a capsule assembly channel and a plug housing sleeve. The plug housing is suitably floated on spring loaded mounts attached to the pylon skin.

Abstract: A high pressure hose construction and method of and apparatus for making the same is disclosed wherein the hose construction has a smooth walled inner liner of resilient polymeric material, and an adhesive layer, which may also be of polymeric material bonded to the liner. A braided cover is disposed over the entire layer and embedded therein. This braided cover is comprised of a plurality of elongated intermeshing strands of non-metallic fibers, such as yarn, and metallic fibers. Preferably, every three strands are of flexible, non-metallic fibers, such as nylon fibers, and every fourth strand is of metallic fiber, such as piano wire or spring steel. One set of strands crosses over and under another set to produce an intermeshing or weaving effect. These strands may also extend in a direction at an angle, such as 45.degree. or 53.degree.

Abstract: A data evaluator employing an endless loop which has the capability of eliminating a standard signal from a test signal so as to result in the depiction of an accurate defect signal. The data evaluator of the instant invention generally comprises two record and play back heads, an endless loop which travels an endless path across the opposed record and play back heads, and a synchronizing device employed to synchronize the signals which simultaneously are played across two opposed record and play back heads.

Abstract: A switching matrix in the key service unit of a key telephone system is formed by several groups of relays, each group being associated with a particular station set and each relay in each group also being associated with a particular central office line. All of the relays, except one in each group, disconnect the associated station set from the associated line when the relay is de-energized. One relay in each group functions in the opposite manner to connect the associated station set to the associated line upon failure of the local power supply.

Abstract: A function generator provides a voltage vs. time curve which is also applied to the oscilloscope and is adjusted by the operator to conform to the peak amplitudes of the displayed electrical pulses. During subsequent testing, this voltage function is applied to a control signal generator which, in accordance with a predetermined relationship, modifies the voltage function into a control signal which is applied to the receiver. The control signal varies the receiver gain with time to attenuate and equalize the displayed pulses to a preselected amplitude.The equalized pulses corresponding to the equal sized reflectors are dependent upon only the size of the reflector and are independent of the depth of the discontinuities within the test blocks. As a result of the adjustment to the receiver gain by the control signal, the magnitudes of all displayed echo pulses from workpieces subsequently tested by the system will be dependent only upon the sizes of the corresponding discontinuities in the workpieces.

Abstract: A helically fabricated flexible hose having two reinforcing wires which also serve as electrical conductors and a multiple-ply wall which is thicker over the wire convolutions than between them and is reinforced with cords within the wall plies.

Abstract: A key telephone set is disclosed having a programmed digital computer which signals a central switching and control unit of a key telephone system of the status of a plurality of function switches and receives signals from the central switching and control unit that certain electrical connections and visual indicators in the key telephone set are to be initiated or controlled. Two independent audio communication circuits are provided in the key telephone set for interconnection to either the hybrid network of the handset or the built in speakerphone unit. Central office lines are accessed via individual function switches. Intercom calls are initiated via one function switch, and are answered hands-free via the speakerphone or are answered via the hybrid network. A wide range of features are signalled via the function switches and are visually monitored by means of visual indicators. The key telephone set may be used interchangeably with either dial pulse signalling units or tone signalling units.

Abstract: The disclosure is directed to a calling circuit which controls the connection of two different audio signal sources to a single audio signal transmission path for broadcasting the audio signals over a telephone set loudpseaker as well as controlling the energization of indicators in the telephone set and at the main control circuit. Only four conductors are used to connect the telephone set with the main control circuit, two of which are power supply conductors which may supply other circuits as well.

Abstract: A gas lighter is formed by a head assembly which incorporates all of the valving, regulation and ignition functions and is slidably and detachably connected to a fuel cartridge having a valve assembly through which the head assembly is fluidly coupled to the fuel supply. The fuel cartridge may be stored indefinitely apart from the head assembly, and may be either disposed of and replaced, or refilled, when its fuel is exhausted.

Abstract: The disclosure relates to a four conductor circuit arrangement providing two communication channels between a control unit and a terminal device. Power feed and bi-directional signalling are accomplished simultaneously over the same four conductors used for the two commmunication channels without interference. The signalling from the control unit to the terminal is accomplished by means of a voltage modulator circuit in the control unit by which voltage pulses are transmitted via a phantom circuit arrangement over the four conductors to the terminal unit. The voltage pulses are sensed from the phantom circuit in a data receiver which is located at the terminal unit. Connected to the phantom circuit in the terminal unit is a voltage regulator circuit which receives power from the control unit via the four conductor phantom circuit interconnecting the control unit and the terminal. In series with the voltage regulator circuit is a constant current sink and an inductor.

Abstract: A conveyor system for handling containers, particularly non-rigid bottles or jars, wherein the containers are gripped firmly but resiliently, to minimize deformation, and are conveyed, without friction or danger of marring, to a delivery zone where they can be delivered individually or in groups. The container gripping means includes holding jaws carried by complementary endless belts or chains, and inflatable pressure adjusting air bags for urging the holding jaws into engagement with the containers, holding them precisely spaced for subsequent operations and releasing them accurately on signal.

Abstract: Dual-chamber pressurized dispensers for a variety of products. A flexible inner container defines one chamber in which the product to be dispensed is contained, the inner container being connected at one end to a dispensing valve. A rigid outer container encloses the flexible inner container and therebetween defines another chamber in which a pressurizing propellant is contained. Each inner container is designed to achieve high expulsion efficiency, with an upper portion having a lipped aperture in which the dispensing valve is received and a lower portion having longitudinal stiffening ribs.