Abstract: A connector is disclosed for coupling a coaxial cable to terminal pins on a printed circuit board to provide EMI/RFI shielding for a signal pin on the board. The insulator of the connector has a center contact cavity for receiving a socket contact which is connected to the center conductor of the coaxial cable. Longitudinal grooves in the outer surface of the insulator form outer contact cavities for ground terminal pins on the PC board. Integral resilient contact fingers formed on the shell extend inwardly into the outer cavities to engage the ground pins.

Abstract: A semiconductor gas sensor comprises an insulating substrate (11) on which a resistive heater track (15) coupled to a pair of electrodes (12, 14) is deposited. A film (16) of a semiconductive metal oxide, typically a doped oxide, is ion-plated on to the assembly so as to contact the resistive track (15) and a further electrode (13). Exposure of the device to a particular gas, e.g. hydrogen sulphide, reduces the resistivity of the semiconductive film (16), this change being detected via an amplifier circuit (not shown). In an alternative version of the sensor (FIGS. 5a, 5b and 6) the heater is disposed under a dielectric layer, the semiconductive film being ion-plated onto the dielectric layer and electrodes therein.

Abstract: A continuous wave pseudonoise radar system which employs a large word rate to avoid spillover and other noise. Spillover is the electromagnetic energy that is transmitted from the transmitting antenna directly to the receiving antenna. In other words, the spillover is not reflected from the target. The word frequency is thus made higher than the highest expected doppler. The high word rate would normally cause an ambiguous range indication because the word wavelength would be less than twice the maximum expected target range. However, this problem is solved by the use of coarse and fine range indicators. It is an outstanding feature of this invention that the coarse range is obtained by changing the transmitter bit rate. The difference between transmitter and receiver bit frequencies is then integrated over a selected period. The definite integral is directly proportional to range. However, the range turns out to be a function of the transmitter bit frequency only at the integral limits.

Abstract: A sheet feeder for an impact daisywheel type printer is interconnected with an existing system by reconnecting the ASCII type data cable to the sheet feeder. The internal logic of the sheet feeder is cabled to the printer and provides for all necessary automatic control. The sheet feeder also includes a mechanical bail control which opens the bail to allow for automatic feeding of the paper around the platen.

Abstract: A plastic ribbon guide to fit on a print head of a mosaic printer. The printer is a ticket printer which holds the ribbon in a stable position adjacent the tray which also acts as an anvil. The ribbon is kept taut. The ribbon guide has a shape to hold the ribbon in a positive manner.

Abstract: Elemental sulfur is recovered from acid gas containing hydrogen sulfide (H.sub.2 S). Such H.sub.2 S may be produced from any conventional source such as an amine desulfurization plant. The acid gas and the H.sub.2 S therein is contacted with oxygen (O.sub.2) or the oxygen in air in a stoichiometric amount such that one-third, by weight, of the flowing H.sub.2 S is oxidized (the H.sub.2 S is measured and the O.sub.2 thereby controlled). Oxidation takes place thus:H.sub.2 S+3/2 O.sub.2 .fwdarw.SO.sub.2 +H.sub.2 OThe sulfur dioxide (SO.sub.2) indicated in the equation above is then further reacted in a conventional Claus process sulfur recovery plant with the balance of the H.sub.2 S. That is, due to the fact that only the said one-third of the H.sub.2 S is oxidized, there is a two-thirds remainder of the same and it is this two-thirds remainder which is referred to above as the "balance." This balance is converted to elemental sulfur (S) in the following manner:2H.sub.2 S+SO.sub.2 .fwdarw.3S+2H.sub.

Abstract: An electronic navigation beacon, particularly for coastal navigation, in which an unmodulated carrier f.sub.c is transmitted from the first antenna of a pair of antennas, and a periodically modulated sideband f.sub.c .+-.f.sub.a is transmitted from both antennas, where f.sub.a is in the audio frequency domain. A cyclical RF phase variation is imposed on the sideband signal transmitted from the second antenna. The effect in space is that of a rotating radial having an audio frequency null, the periodic modulation providing the listener at a remote point with timing information enabling determination bearing as a function of the time of passage of the radial through the remote point relative to the start of rotation of the radial.

Abstract: An optical fiber connector of the watch bearing jewel type. To prevent "growing out" of a fiber end to which the connector is terminated, a thin protective window is placed against the bearing jewel and supported by a fiber stub mounted in a second watch bearing jewel. The fiber and the fiber stub are optically coupled via the window.

Abstract: A flat cable insulation-displacement connector in which the center-to-center spacing of the terminals is less than the spacing between the conductors of the flat cable. The terminals are inserted in the connector housing so that the planes containing the contact slots present an angle of 23.degree. to the lateral axis of the connector. A cable clamp is provided with guide channels positioning the cable over the contact forks at the same angle of 23.degree.. The clamp is provided with relief contours over which the cable is bent successively along several angles when forced down by closing the cover, thus realigning the cable with the connector axis.

Abstract: Powder which is too fine to be fluidized on its own is fluidized admixed with a sufficient quantity of coarser powder of a particle size that can be fluidized on its own. The process may be used for coating fine powders with valve-metal for the manufacture of capacitor electrodes.

Abstract: A liquid level system employs a bellows which is in flow communication with a differential pressure unit by a column of reference liquid. A float in the bellows carries a switch which energizes an alarm when liquid in the column is lost.

Abstract: A filter connector is disclosed in which the insulator thereof contains a slot which is parallel to and intersects a row of contact cavities in the insulator. A monolithic capacitor is mounted in the slot with its live electrodes aligned with and facing the contact cavities. A contact in each cavity embodies an integral outwardly extending spring finger which engages one of the electrodes on the capacitor. A rear insulator retains the contacts and capacitor in the cavities and slot, respectively.

Abstract: A liquid level system employs a pair of vertically spaced sensors in a tank such as a boiler. Each sensor includes a pair of bellows. The first bellows is enclosed by a protective enclosure while the second bellows is exposed to the interior of the tank. The first bellows of the two sensors are interconnected and filled with a liquid forming substance, such as an alkali metal, which is in liquid phase at high temperatures, while the second bellows of each sensor and the enclosure for the first bellows are interconnected and filled with a second liquid-forming substance, such as a metal alloy, which is essentially inert. A transducer is connected to one of the second bellows which produces an electrical output signal proportional to the difference between the pressures at the locations of the second bellows and, thus, the level of liquid in the tank.