A metal oxide coating is applied between the conductive base and the magnesium oxide dielectric of the input and/or erase electrode(s) in a plasma display device to prevent break-down of the dielectric.

A Luneburg lens formed on an optical waveguide has a protective coating to assure stable optical characteristics by preventing changes in the focal length due to exposure to surrounding light and/or moisture. The Luneburg lens may be of As.sub.2 S.sub.3 material provided on a Ti in-diffused LiNbO.sub.3 waveguide.

A power connector includes a shunting bar which will shunt the terminals of one mating member prior to unmating of the connector and maintain the shunt condition during the initial phases of mating of the connector. This connector finds particular use where it is desirable to shunt the secondary of a current transformer when a control module is removed. Likewise the connector can be used to insure discharge of capacitance from associated circuitry thereby making them safe to handle.

A protected conveyor for a spray chamber or spray booth is provided with a pressurized housing and an air curtain means which substantially isolates the conveyor from the deleterious fluids within the spray booth and substantially isolates the articles from droppings from the conveyor. More specifically, a blower supplies air under pressure to a plenum connected to a nozzle means which discharges a thin curtain of air transversely across a slot in the housing wall and transversely across dependi...

In combination, a CRT (cathode-ray tube) comprising an envelope including a glass faceplate panel and an adjoining glass funnel sealed to said panel, an elastomeric film coating consisting essentially of polyurethane around and adhered to said panel and a continuous metal reinforcing structure around said panel and adhered to said film coating.

A connector assembly providing uninterrupted protection against electromagnetic interference includes a receptacle having a recess in which a first contact assembly is positioned, and a plug having a mating portion which fits into the recess. The mating portion contains a second recess in which a second contact assembly is positioned to mate with the first contact assembly as it projects into the second recess from the first recess. Pivotally mounted doors within the first and second recesses pr...

A periscope has a pair of solid plastic, transparent prismatic-shaped blocks of optical material which are mounted within a protective housing which extends through an opening in an armored vehicle for safely viewing an exterior field of view from within the protected vehicle. Each of the blocks has a reflective surface and a viewing surface and are separated from each other by a void. A hollow transparent cell is mounted within and fills the void between the spaced blocks and is bonded to the b...

A connector assembly providing uninterrupted protection against electromagnetic interference includes a receptacle having a recess in which a first contact assembly is positioned, and a plug having a mating portion which fits into the recess. The mating portion contains a second recess in which a second contact assembly is positioned to mate with the first contact assembly as it projects into the second recess from the first recess. Pivotally mounted doors within the first and second recesses pr...

A calcium electrode for an electrochemical cell with an electrolyte consing of molten nitrates and up to 10 mole percent halides.

Aquatic sports zones are reclaimed or made by bounding non-shore areas of the zone with a plurality of end-to-end connected water impervious flotation boom sections, anchoring the formed boom in the bound zone, and attaching the ends of the boom to pier bulkheads, and providing the boom with a ballasted skirt having a length greater than the maximum normally anticipated water depth at the point of attachment of the skirt to the boom. Where desired, water purification means may be included in the...