Abstract: The invention contemplates an improved tripod mount for cameras or the like and embodying the feature of simplified raised or lowered adjustment of camera height, as well as the feature of adjustably spreading and/or collapsing the legs in a single unitary motion which can add the convenience of floor rollability when desired.

Abstract: A chroma-key insertion technique by which a part of a second television picture, designated by a chroma-key signal produced from a first television picture, is inserted into the first television picture. The second television picture is displayed on a television monitor which is inserted into the chroma-key frame advantageously allowing a television announcer to always face or direct his eyes toward the chroma-key screen in which a picture from a remote video source is to be inserted on a resultant picture.

Abstract: A clear signal generating circuit for initializing a logic circuit upon the application of power to the logic circuit. The generator circuit comprises a level detection circuit for generating a detection signal when the power supply voltage reaches or exceeds a predetermined value, a counter circuit which commences to count in response to the detection signal and which generates a trigger pulse upon reaching a predetermined count and a status storage circuit which is placed in a first state in response to the occurrence of the detection signal and placed in a second state in response to the trigger pulse. The output of the status storage circuit is utilized as the generator circuit output.

Abstract: A copper-aluminum alloy flame spray powder is provided consisting essentially by weight of 0 to about 5% Fe, about 2% to 8% Ni, about 5% to 15% Al, and the balance essentially copper, a coating produced from said powder being characterized by improved as-sprayed hardness in combination with resistance to oxidation and galling.

Abstract: P/M products are provided having improved resistance to wear and abrasion by adding controlled amounts of pre-alloyed refractory carbide material to metal powders selected from the group consisting of iron-base, nickel-base, aluminum-base, copper-base and beryllium-base powders following which the mixed powders are compacted and sintered to the desired shape.

Abstract: The invention contemplates method and means for using an electron microscope in conjunction with a projection system whereby the microscope produces a distortion-corrected image of an object at a relatively low magnification level, the distortion-corrected image being at the object plane of the projection system, whereby magnification may be varied in accordance with excitation of the projection system, and whereby a delicate object specimen may be fixedly positioned and exposed to large-area low-level illuminating flux within the objective lens system of the microscope.

Abstract: A solar cell array, comprised of a plurality of series-connected unit solar cells, formed from a common substrate, is cooled by providing cooling passages between adjacent sidewalls of adjoining unit cells through which a heat transfer medium is transmitted. Transmission of the heat transfer medium through the passages effectively cools the solar cell array as the cooling surfaces provided by the sidewalls of the cooling passages are much larger than the light-receiving surfaces of the cells. Enhanced cooling effectiveness can be accomplished by providing additional cooling passages along the lower surfaces of the unit cells.

Abstract: In a semiconductor device including at least one active semiconductor region isolated by an oxide layer in a semiconductor substrate having a principal surface, at least two PN junctions, terminating at the oxide layer, are formed in the active region, by introduction of impurities into the active region with the active region surface never exposed during their formation. The junctions may partly reach the principal surface. The impurities may be introduced by ion implantation through a thin oxide film overlying the active region, and through use of other films placed on the oxide film, or by the known melt-through technique. At least one junction may be formed by epitaxial growth of a semiconductor layer of the opposite conductivity type.

Abstract: The method of the invention employs a gas torch which has the feature of selective addition of metal powder to the gas flow, in a cyclical pattern of metal-spraying and non-spraying (fusing) utilization of the same torch. The torch is caused to make short and relatively rapid transverse oscillations of sweep across the width of a swath along the workpiece, the swath developing in the course of a relatively slow feed (e.g., a longitudinal feed) of the torch with respect to the workpiece. The rate of torch feed and the duty cycle of metal application (vs. non-spraying) are related to the effective width of the metal "bead" thus sprayed, so as to assure (1) overlapping of adjacent beads and (2) fusing of adjacent beads to each other and to the workpiece.

Abstract: A television communications system enhances the video signal-to-noise ratio by delaying video intelligence over an interval (as by loading the video into a store therefor), while obtaining a measure of its average value and dynamic range. At the transmitter, the video is then read out from memory, has its average value diluted and is amplified before transmission to approach the channel amplitude capacity.At the receiver, the communicated average value and dynamic range signals are utilized to restore the average value to the received wave--and to appropriately reduce its relative amplitude. The concomitant channel amplitude reduction, with offsetting amplitude enhancement at the transmitter, improves the composite channel transmission ratio.

Abstract: A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g. steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of at least one metal silicide, e.g. titanium disilicide, homogeneously mixed with a coating metal powder, such as nickel powder. The mix may additionally contain agglomerates of silicon powder with the coating metal powder making up the major portion of the powder mix.

Abstract: A metallic member is disposed in the vicinity of a mirror within an internal mirror type gas laser tube, and an electric discharge is excited between an internal laser anode and the metallic member. The metallic member serves as a cathode to sputter the metal of the metallic member onto the surface of the internal mirror. The metal adheres to the surface of the mirror and forms a metallic film thereon. The output power of the lower tube is monitored during the sputtering process and the sputtering process is terminated when the output power is reduced to a desired output power value.

Abstract: A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of silicon and at least one metal disilicide, e.g., titanium disilicide, homogeneously mixed or blended with a coating metal powder, such as nickel powder.

Abstract: A flame spray powder mix or blend is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of at least one oxidizable metal, e.g., aluminum, homogeneously mixed or blended with a coating metal powder, such as nickel powder. The coating produced is characterized by a strong bond and also being substantially low in dispersed oxides.

Abstract: A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, case iron, among other metal substrates, the powder mix comprising particles of at least one metal silicide, e.g., titanium disilicide, mixed with a coating metal powder, such as nickel powder. The amount of metal silicide in the powder mix preferably ranging from about 2% to 20% by weight.

Abstract: Hydrophilic polymers are formed in situ by irradiating a mixture of hydroxyalkyl methacrylate and a cross linking agent. The former polymer is optically clear and free of voids, obviating the discoloration and discontinuity deficiencies characterizing prior art polymerization employing foreign substances such as solvents, dispersing agents, catalysts and the like.In accordance with one aspect of the present invention, the hydrophilic polymer may be formed as a coating on a glass, plastic or other substrate.

Abstract: Motor driver/control apparatus employs a motor speed regulating amplifier configuration, e.g., two push-pull power amplifiers operable responsive to a motor speed-direction command input signal, and having the motor differentially connected between amplifier output ports. The amplifier(s) are supplied with an energizing potential of variable amplitude just sufficient for amplifier operation and to satisfy the then obtaining motor consumption. Accordingly, system power is effectively utilized; needless power drain avoided; and the amplifier cost and complexity is reduced since the amplifier need not dissipate inordinate source-supplied energy not required for motor actuation.In accordance with one further aspect of the present invention, a power supply switching regulator for a motor utilized in a radar application is operated at the radar pulse repetition rate. This produces a non-interferring zero frequency beat between the power supply and radar pulse rate in the radar receiver.

Abstract: A solid-state imaging apparatus includes a charge-coupled device having photoelectric converting means for accumulating charges corresponding to incident light rays and having a charge storage means for storing and transforming said accumulated charges during periods determined by a bias signal. Means are provided for controlling the period of the bias signal and read-out means are provided for obtaining the video signal from the charge-coupled device.

Abstract: A time generator circuit comprises a reference signal generator and frequency divider circuits to divide the reference signal to generate a first signal at an audio frequency, an hour signal, and a plurality of third signals of different predetermined frequencies. The third signals are applied to a selecting circuit which selects one of these signals. An output generating circuit receives the first signal as an output time signal in response to the second signal during a time period determined by the selected one of the third signals.

Abstract: A semiconductor device is disclosed in which a protrusion is interposed between a bump terminal electrode and the peripheral edge of the semiconductor substrate.