Abstract: A secure communication system uses narrow beam laser transmissions from a relay station high above the surface of the earth and another station which may be a submerged submarine. Position reporting by a laser transmission from the other station or submarine to the relay station provides for acquisition, tracking and data transmission between the stations. For strategic use transmissions to the submarine for one way data transmission is achieved by radio relay to the relay station and laser down link transmission to the submarine. Transponding mode operation is provided for a two-way transmission data link.

Abstract: A fluid suspension system is provided for a motor vehicle wheel, the wheel being rotatably mounted on an axle. The fluid suspension system comprises a load arm, an air bellows, and a torque arm. The air bellows is mounted between the load arm and the chassis of the motor vehicle. One end of the load arm supports the axle, the other end of the load arm being attached to the chassis by a first pivot bearing. One end of the torque arm is attached to an axle seat by a second pivot bearing, the other end of the torque arm being attached to the chassis by a third pivot bearing. The torque arm and the load arm extend in the same direction away from the axle. A bearing block is slidably mounted on the torque arm, the bearing block being housed within a slider casing fixed to the chassis. The bearing block and the slider casing are such that the bearing block has substantially no freedom of movement in a direction parallel to the axle.

Abstract: A color picture tube shadow mask material is made of an alloy consisting of 30 to 45 wt. % of Ni, 0.1 to 5.0 wt. % of V, and the balance essentially Fe. A color picture tube having a shadow mask consisting of this material is also prepared. The alloy has an average thermal expansion coefficient of 6.times.10.sup.-6 /.degree.C. or less in a temperature range of 20 to 100.degree. C., and an elasticity coefficient of 15,000 kgf/mm.sup.2 or more.

Abstract: A multiplexing method for an alarm system is disclosed in which a plurality of transponders connected in parallel by a pair of wires each monitors an opening and responds to a synchronizing signal after a preprogrammed time delay corresponding to the particular transponder if the opening it is monitoring is secured.

Abstract: A synthesizer apparatus includes a reference oscillator for generating a reference signal, a voltage controlled oscillator (VCO) whose oscillation frequency is controlled by a control signal, a frequency divider, which is intermittently operated, for frequency-dividing the output signal from the VCO, and a phase comparator for comparing the phases of the reference signal and the output signal from the frequency divider, and supplying a control signal to the VCO in accordance with the phase difference. The phase comparator outputs an average value signal having an average value corresponding to a difference in pulse rise times of the output signal from the frequency divider during an operation period of the frequency divider.

Abstract: A cathode structure for a magnetron representative of a self-oscillation type microwave electron tube comprises a pair of opposite end shields for supporting both ends of a filament helically wound in an axial direction, and a getter fixed on at least an upper end shield positioned on the side of a terminal from which a microwave oscillation output is produced. The upper end shield is concaved with respect to a lower end shield, and the getter provided on the upper end shield is also concaved so as to be closely fitted over substantially the entirety of an outer surface of the upper end shield. Preferably, the getter provided on the upper end shield has an upright annular wall of a central burring hole. Thus, the improved cathode structure is immune to deformation and suitable for cleaning and welding, thereby ensuring improved lifetime stability and high fabrication efficiency.

Abstract: A projection picture tube includes a bulb, a sealing chamber disposed in contact with a front surface of a phosphor screen panel of the bulb and sealed with a liquid coolant, and a holding mechanism for holding the sealing chamber by the bulb. The sealing chamber includes a transparent member disposed in front of the phosphor screen panel to be spaced apart therefrom, a heat dissipation member which is disposed between the transparent member and the phosphor screen panel and part of which is in contact with the liquid coolant sealed in the sealing chamber, seal members respectively disposed between the heat dissipation member and the phosphor screen panel and between the heat dissipation member and the transparent member, and a holding piece for holding the transparent member on the heat dissipation member. The holding mechanism is coupled to the heat dissipation member.

Abstract: The panel face plate of a cathode ray tube is provided with an irregular film which is formed by spraying a mixed solution of silicon hydroxide, alcohol and alkyl acetate onto the panel face plate.

Abstract: A convertible suspension mounting system for ceiling fans having a disk-shaped fixing support for being secured on the ceiling surface, a housing body of a bowl shape connected to the fixing support, a connecting device flexibly coupled with the housing body at one end and screw-connected to a pipe fitting of a ceiling fan structure. The connecting device includes a tubular connecting member with screw threads and a through hole respectively formed at each end, a circular coupling member screw-connected to the connecting member at the upper portion, and an axially flexible pipe sleeve fastened between the circular coupling member and the bottom side of the housing body with the upper portion of the connecting member flexibly received therein, so that the connecting member is provided with an axial deviation for adapting to various ceiling surface conditions, and the suspension system can be conveniently converted into a direct coupling system without the connecting device.

Abstract: A color picture tube includes a shadow mask of a precipitation strengthening Fe-Ni alloy. The alloy contains Fe-Ni as a major constituent and has at least one additive element. The alloy has a precipitation strengthening phase of Ni.sub.x X.sub.y (wherein X is at least one element selected from the group consisting of Al, Ti, Nb, Ta and Zr; x is 2 to 4; and y is 0.05 to 1.5) and an average thermal expansion coefficient of not more than 6.times.10.sup.-6 /.degree. C. in a temperature range of 20.degree. C. to 100.degree. C.

Abstract: Digital processing of speech signals for compression/expansion pitch change is provided by writing and reading a ROM at different rates and controlling the discard/repeat segments of memory to be integral multiples of the pitch period. The rear pointer jumps a portion of the memory to either skip a portion (in compression) or retrace a portion (in expansion) of the recorded information. The read pointer jumps so as to avoid crossing the write pointer (thereby avoiding reading old recorded information). The jump occurs when a predetermined spacing or condition is reached between read and write pointers.

Abstract: A dimpled golf ball for use after dark. The ball is made of translucent plastic and contains in a diametrical hole therein a chemiluminescent light stick which when activated renders the ball when used in the dark plainly visible in the air and on the ground. In a preferred form, the ball is made to comply with the rules of the United States Golf Association so that it may also be used for competitive daytime play. In a modified form, the resilience of the ball may be substantially diminished so that it will travel a much less distance than the preferred ball when hit with the same club.

Abstract: A hanging lamp can be folded in a compact size so as to ease packaging and shipment. The hanging lamp includes a foldable lampshade and a switch housing having a plurality of bendable lamp tube attached thereto. A plurality of ribs of the lampshade extend downwardly and outwardly from a top centerpiece forming a dome-shaped frame structure. Each rib includes an upper rib segment and a lower rib segment connected with each other by a pivot pin. A spring is disposed around the pivot pin and biases the lower rib segment away from the upper rib segment in a transverse direction so as to ease folding up the lower rib segment against the upper rib segment. The bendable lamp tube can also be bent inwardly so that the hanging lamp occupies little space in shipment.

Abstract: In a magnetron cathode assembly having a filament for emitting thermoelectrons, upper and lower end shields fixed at upper and lower ends of the filament, a center lead fixed at and connected to the upper end shield, a side lead fixed at and connected to the lower end shield, and an insulating spacer having through holes with which the center and side leads are respectively engaged, the insulating spacer comprises a groove which has a width substantially the same as a diameter of one of the through holes and which clamps a bent portion of at least one of the center and side leads.

Abstract: An ultrasonic probe jig includes a leaf spring, a support member, a mounting mechanism, and a regulating member. The leaf spring member is brought into contact with the upper surface of an ultrasonic probe to be located on an object to be examined. The support member supports a peripheral portion of the leaf spring member. The mounting mechanism pivotally mounts a support rod coupled to a control device on the support member. One end of the regulating member is mounted to the support rod and the other end thereof is engaged with the support member. The regulating member regulates pivotal movement of the support member.

Abstract: A fluorescent screen of a color picture tube is manufactured by the steps of forming a film of substance which becomes sticky when exposed to light on an inner surface of a panel of the tube, exposing predetermined portion of the film through a shadow mask to render sticky the exposed portions, repeatedly applying powders of phosphors of respective colors onto the portions which became sticky so as to form phosphor picture elements of respective colors, exposing portions of the film other than the predetermined portions to render them sticky, and applying a powder of graphite to the portions other than the predetermined portions to form a black matrix film.

Abstract: A secure communication system uses narrow beam laser transmissions between an orbiting satellite and another station which may be a submerged submarine. Position reporting by a laser transmission from the submarine to the satellite provides for tracking and data transmission between the stations. For strategic use tracking of the submarine for one way data transmission is achieved from a single laser transmission from the submarine while transporting mode operation is provided for a two-way transmission data link.

Abstract: A substrate structure utilized to fabricate a semiconductor device is constituted by a silicon substrate; an element region selectively formed on the silicon substrate and a relatively thick field oxide region formed adjacent to the element region; an element isolating region formed between the element region and the field oxide region, the element isolating region being in direct contact with the field oxide region; the element isolating region being provided with a relatively deep groove formed in the silicon substrate and having a relatively small width; a silicon oxide insulating film formed on the inner wall of the groove; and a silicon nitride insulating film disposed on the silicon oxide insulating film. The surfaces of the element region, the element isolating region and the field oxide region on the silicon substrate are formed substantially flat.

Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 160.degree. and 200.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are inclined by a predetermined angle with respect to major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively.

Abstract: A fluorescent screen of a cathode ray tube is prepared by forming a film of photosensitive sticky substance, for example, an aqueous solution of a copolymer of a complex salt of diazonium salt and zinc chloride, oN an inner surface of a face plate of the tube, exposing the film to light to render portions thereof sticky, applying a powdery substance, for example, .[.phosphors of three colors.]. .Iadd.graphite.Iaddend., onto the film to cause the powdery substance to adhere to the portions of the film rendered sticky, removing excess powder to form a film pattern of the powdery substance, causing the substance responsible for stickiness to ooze out onto the film pattern, applying another powdery substance, for example, .[.graphite.]. .Iadd.titanium oxide .Iaddend.onto the film pattern and removing an excess of another powder substance, thus forming the fluorescent screen.