Abstract: A device for removably holding and pressing a holder or carrier, supporting a graphics or textual display, against the interior of a raisable auto window by means of a leaf spring hooked over the top edge of the window and configured to exert force against the carrier when raised.

Abstract: A multi-frequency comb generator (2-4; FIG. 1) for radar and the like using a feedback loop through a frequency multiplier, such as for example, a doubler (3). A reference or master oscillator output goes through a directional coupler (2), for example, a ten dB coupler with twenty dB directivity, to the frequency doubler and then an amplifier (4). The amplifier output is superposed on the reference oscillator output (1) and is applied to the input of the doubler. Frequency doublers, when driven by multiple frequencies, cross modulate and generate sum and difference frequencies, which in going around the loop are fed back to the input, resulting in a comb of frequencies (5). As part of the frequency selecting section of a radar exciter (FIG. 2) the comb of frequencies and the output of a parallel frequency multiplier (8) are fed to a mixer (7), and the mixer's output, along with the coupled output ("N.times.

Abstract: A circuit accepts as input a multi-frequency composite signal, such as that produced by a comb generator and passes on as an output signal switchably selected set of components of the input, so that the output signal may be varied by the selections of the components to be passed through. The circuit contains multiple filters in parallel with switches at the input and output of each.

Abstract: A process and apparatus are described for separating heavy isotopes of hydrogen. The process uses multiple protium-deuterium, protium-tritium or deuterium-tritium exchange reactions between a metal protide and gaseous hydrogen alternately depleted and enriched in at least one heavy isotope of hydrogen. The apparatus for performing the process comprises two multistage reaction zones, one for forming a metal hydride enriched in at least one heavy isotope and one for converting the enriched hydride to a depleted hydride and enriched hydrogen gas. The apparatus is simple in design and the process is much less energy intensive than existing prior art processes.

Abstract: A method and arrangement for enhancing the level of supplied microwave energy including a resonant ring capacitively coupled to a microwave coupling device effective for connecting to a microwave transmission line, the arrangement being mounted in a shield structure. Amplification is effected by IMPATT diodes capacitively coupled to the resonant ring. The microwave coupling device is variably setable with respect to the transfer structure, thereby promoting the establishment of impedance matching therebetween.

Abstract: A DC current injectable double balanced diode ring mixer circuit for radio frequency (RF) application. The diode ring includes eight diode elements and defines eight terminals including four symmetrical DC injection ports in conjugate pairs interleaved with four symmetrical RF inputs for phase and anti-phase application.

Abstract: The unbalance in currents flowing alternately in the two halves of a doubended, push-pull inverter is obviated by means of a parallel resonant network, comprised of an inductor and capacitor, placed in series with the power supply voltage applied to the center tap of the inverter transformer primary winding. The network component values are selected to provide relatively a high impedance of the inverter fundamental operating frequency while providing a low impedance at twice the fundamental operating frequency.

Abstract: Brazing of metal parts employing a homogeneous, ductile, filler metal foil is disclosed. The brazing foil, useful for brazing cobalt based alloys, has a composition consisting essentially of 0 to about 4 atom percent iron, 0 to about 26 atom percent chromium, 0 to about 20 atom percent nickel, 0 to about 4 atom percent tungsten, 0 to about 4 atom percent molybdenum, 0 to about 20 atom percent boron, 0 to about 12 atom percent silicon, 0 to about 2 atom percent carbon and the balance essentially cobalt and incidental impurities. In addition to containing the foregoing elements within the above-noted composition ranges, the composition must be such that the total of iron, chromium, nickel, tungsten, molybdenum and cobalt ranges from about 75 to 85 atom percent and the total of boron, silicon and carbon ranges from about 15 to 25 atom percent.