Abstract: This invention is directed to an electrical connector having substantial shielding effectiveness against EMI energy and especially against EMP energy. The invention improves on known EMI shielded connectors by adding a conductive spring washer, such as a wave washer made from beryllium copper alloy. The spring washer is seated in the plug portion of the connector so as to make electrical contact with the receptacle portion when the plug and the receptacle are mated.

Abstract: An electrical conduit formed of helically fabricated grounding and reinforcing elements, including a foil channel having overlapped turns welded to one another and to a supporting helix.

Abstract: An electrical conduit formed of helical inner and outer channels having movably interlocked flanges, so that the channel convolutions separate on the outside of a bend of the conduit and come together on the inside of the bend.

Abstract: The material tester has three mutually perpendicular directions of motion and a rotary motion about an upright axis. Ultrasonic search units are mounted for motion on or about these axes and are connected to control the speeds along several of the axes and about the vertical axis as well as to produce a signal showing the properties of the material to be tested. The search units are controlled by the motion along the several axes and about an upright axis to follow a contour.

Abstract: A helically fabricated flexible hose having a self-supporting helical reinforcing element of non-circular cross-section with a flat side facing inwardly, thereby imparting a substantially smooth surface to the hose interior.

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: An electrical connector having a receptacle including a receptacle shell and a plug including a plug housing, a coupling nut threaded on the plug housing and engaged with a coupling ring, the coupling nut having threaded engagement with the plug housing and the coupling ring having locking flanges engageable with cooperable locking lands on the receptacle shell, the plug and receptacle being adapted to be fully electrically mated and locked by rotation of the coupling ring through about 90 degrees. An arcuate detent member subtending an angle of about 180 degrees is keyed to the plug housing for relative axial movement of the plug housing, and is received within an annular groove in the coupling ring for resilient forcible selective engagement of opposite radially outwardly enlarged ends of the arcuate detent member with two sets of radially outwardly formed recesses in the coupling ring.

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 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 continuously advancing definite length mandrel device wherein a cylindrical mandrel surface is formed by helically wound closed-loop belt convolutions, improved in that a plurality of belts are employed to form the surface.

Abstract: A control system for actuators which can be separately energized. The controller of the system has a two-position control unit and a three-position control unit and is followed by constant current source circuits, a stepping switch unit with threshold switches having a stepped reference voltage, as well as a logic circuitry interconnecting the stepping switch unit and the two-position control output. Prevention of overshoot or undershoot is achieved by means of additional logic circuitry interconnecting the switches at the positive and negative output of said three-position control unit, said two-position control output, and said first mentioned logic circuitry between the stepping switch unit and two-position control output. In this manner overshoot can be prevented by quickly de-energizing the actuator, which was last energized, when the actual value in the controlled system closely approaches the set-point or reference value.

Abstract: The reinforced flexible duct consists of a single- or double-ply reinforcing fabric, a wire helix, and a continuous extruded liner. The fabric, wire helix, and extruded liner are continuously helically wound on a mandrel. The freshly extruded liner adheres to itself, to the helically wound wire, and to the reinforcing fabric to form a continuous reinforced flexible duct. Optionally, a narrower continuously extruded and wound scuff strip can be wound over the wire helix.

Abstract: High storage density for spent nuclear fuel assemblies in a pool achieved by positioning fuel storage cells of high thermal neutron absorption materials in an upright configuration in a rack. The rack holds the cells at required pitch. Each cell carries an internal fuel assembly support, and most cells are vertically movable in the rack so that they rest on the pool bottom. Pool water circulation through the cells and around the fuel assemblies is permitted by circulation openings at the top and bottom of the cells above and below the fuel assemblies.

Abstract: An electrical connector having a receptacle means including a receptacle shell and a plug means including a plug shell, coupling means including a coupling housing engaged with a coupling nut for rotation of the coupling nut, the coupling nut having threaded engagement with the plug shell and the coupling housing having a breech lock means engagable with cooperable breech lock lands on the receptacle shell, the plug means and receptacle means being adapted to be fully electrically mated and locked by rotation of the coupling housing through about 90.degree.. An arcuate detent member of about 180.degree. keyed to the plug shell for relative axial movement and received within an annular groove in the coupling housing for resilient forcible selective engagement of opposite radially outwardly enlarged ends of the arcuate detent member with two sets of radially outwardly formed recesses in the coupling housing.

Abstract: The hose assembly, preferably for use as a flexible hose for a vacuum cleaner or the like, includes a pair of side by side electrical conductors helically wound integrally within the hose. Each conductor is doubly insulated. A tubular coupling cuff is screwed onto one end of the hose for coupling the hose to other equipment. The cuff is molded with a recessed area on the inner diameter thereof. Wire connectors between conductors in the hose and wires in an electrical wiring harness are mounted in a strain relief molded onto the harness and mounted in the recess so that when the harness is pulled, the wires thereof will not become disconnected from the conductors of the current carrying hose.