Abstract: A concentration valve for a gas detecting apparatus including a cylinder having diametrally opposed inlet and outlet ports for a sample gas and having diametrally opposed inlet and outlet ports for a carrier gas longitudinally spaced from and in the same longitudinal plane as the sample-gas inlet and outlet ports, a cylindrical plug having a diametral passage therethrough and movable longitudinally of the cylinder between a sampling position wherein the diametral passage communicates with the sample-gas inlet and outlet ports and an analyzing position wherein the diametral passage communicates with the carrier-gas inlet and outlet ports, a pneumatic actuator for longitudinally moving the cylindrical plug between the sampling and analyzing positions, gas adsorbing means in the diametral passage for adsorbing a gaseous material or materials from the sample gas, and means for heating the gas adsorbing means in the analyzing position of the cylindrical plug to desorb the previously adsorbed gaseous material or ma

Abstract: A power source for operating gas discharge lamps and other loads at high frequency, typically utilizing a 120 volt ac source rectified to provide a 150 volt dc input and providing a 20,000 hertz output. An inverter with current feedback in place of the conventional voltage feedback providing voltage turn off and voltage turn on in less time and providing increased base current during the conduction time for reducing the voltage-current product and heat generated in the inverter. Voltage limiting and current limiting features are provided for the basic circuit. Inverter circuits with two transistors for increased loads are also provided.

Abstract: A cable transfer system for a telephone central office main frame and cable vault. A cable transfer panel for permanent or temporary connection to the main frame while positioned remote from the main frame, and providing for interconnection of up to 200 line pairs at a time with a single switch operation for each interconnection. A cable transfer panel also providing for cross connecting of line pairs and for connecting of test equipment to the line pairs, as desired.

Abstract: An air supply track for positioning in a floor, and a probe for mounting on a vehicle which moves along the floor. An air supply track having a slotted conduit with the slot closed by a membrane urged against the slot by air pressure within the conduit. A probe movable into engagement with the membrane for moving the membrane away from the slot permitting air flow through apertures in the membrane into the probe and then into the vehicle.

Abstract: Apparatus and method for separating materials, particularly isotopes of heavy metals. An electrohydrodynamic source of positive ions directed in a beam to a transverse magnetic field which deflects the ions along paths which carry the different mass ions to different collectors. An ion source incorporating a container for molten material, a pressure system for delivering the liquid material to a capillary tube, and a high voltage power supply providing an intense electrostatic field at the tube end for producing ions by field emission.

Abstract: A process for the oxidation of sulphur dioxide to sulfur trioxide in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the sulfur dioxide with a predetermined amount of oxygen containing gas to give at least 1% stoichiometric excess of oxygen for the oxidation of sulfur dioxide to sulfur trioxide and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 120.degree. C and about 800.degree.;W.sub.k X.sub.n J(1-k-n).sup.ZO (3.+-.m)whereinW is Zirconium, Tin or Thorium or mixtures thereof;X is an alkaline earth metal or mixture thereof;J is scandium, ytrrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series or a mixture thereof, at least 0.01% of said metal having an oxidation state other than +3;k is a number having a value between 0 and about 0.1;m is a number having a value of from 0 to about 0.26; andn is a number having a value from 0 to about 0.

Abstract: A process for the oxidation of hydrogen to water in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the hydrogen with a predetermined amount of oxygen containing gas to give at least 1% stoichiometric excess of oxygen for the oxidation of hydrogen to water and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 100.degree. C and about 1,000.degree. C;w.sub.k X.sub.n J(1-k-n).sup.ZO (3.+-.m)WhereinW is Zirconium, Tin or Thorium or mixtures thereof;X is an alkaline earth metal or mixture thereof;J is scandium, yttrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series of a mixture thereof, at least 0.01% of said metal having an oxidation state other then +3;k is a number having a value between 0 and about 0.1;m is a number having a value of from 0 to about 0.26; andn is a number having a value from 0 to about 0.

Abstract: A process for the oxidation of hydrogen sulfide to sulfur trioxide in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the hydrogen sulfide with a predetermined amount of oxygen containing gas to give at least 1% stoichiometric excess of oxygen for the oxidation of hydrogen sulfide to sulfur trioxide and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 100.degree. C and about 700.degree. C.;w.sub.k X.sub.n J(1-k-n).sup.ZO (3.+-.m)whereinW is Zirconium, Tin or Thorium or mixtures thereof;X is an alkaline earth metal or mixture thereof;J is scandium, yttrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series orA mixture thereof, at least 0.01% of said metalHaving an oxidation state other than +3;k is a number having a value between 0 and about 0.1;m is a number having a value of from 0 to 0.26; andn is a number having a value from 0 to about 0.

Abstract: A process for the oxidation of carbon monoxide to carbon dioxide in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the carbon monoxide with a predetermined amount of oxygen containing gas to give at least 1% stoichiometric excess of oxygen for the oxidation of carbon monoxide to carbon dioxide and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 100.degree. C and about 1,000.degree. C;w.sub.k X.sub.n J(1-k-n).sup.ZO (3.+-.m)WhereinW is Zirconium, Tin or Thorium or mixtures thereof;X is an alkaline earth metal or mixture thereof;J is scandium, ytrrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series or a mixture thereof, at least 0.01% of said metal having an oxidation state other than +3;k is a number having a value between 0 and about 0.1;m is a number having a value of from 0 to about 0.26; andn is a number having a value from 0 to about 0.

Abstract: A process for the oxidation of ammonia to nitrous oxide in the presence of elemental nitrogen with minimal oxidation thereof which comprises combining the ammonia with a predetermined amount of oxygen containing gas to give at least 1% stoichiometric excess of oxygen for the oxidation of ammonia to nitrous oxide and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 100.degree. C and about 400.degree. C.;w.sub.k X.sub.n J(1-K-n).sup.ZO (3.+-.m)WhereinW is Zirconium, Tin or Thorium or mixtures thereof;X is an alkaline earth metal or mixture thereof;J is scandium, yttrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series or a mixture thereof, at least 0.01% of said metal having an oxidation state other than +3;k is a number having a value between 0 and about 0.1;m is a number having a value of from 0 to about 0.26; andn is a number having a value from 0 to about 0.

Abstract: Method and apparatus for making vitreous silica of high purity including producing a melt of liquid silicon in a first chamber, mixing the liquid silicon with carbon dioxide in an upper zone of a second chamber to produce silicon monoxide, mixing the silicon monoxide with oxygen in a lower zone of the second chamber producing silicon dioxide in gaseous form, condensing the silicon dioxide on the wall of the second chamber, and withdrawing the resultant tube of vitreous silica from the lower end of the second chamber. The apparatus is lined with silica to prevent introduction of impurities. The liquid silicon is produced by mixing hydrogen and trichlorosilane.

Abstract: A hinge for mounting a door in an opening of a piece of furniture, with a hinge part receiving a door between spaced arms with an arm visible on the door outside face when the door is closed, and with a holding component having a flat bracket for attachment to an interior face of the furniture, and with the holding component pivotally mounted to the hinge part.

Abstract: A portable container convertible to a lighted dancing stage, including a bottom panel adapted to lie flat and form a dancing stage, four side panels hingedly connected to the bottom panel along corresponding edges thereof and adapted to be folded upwardly to form a container, or to lie flat adjacent the bottom panel, readily releasable means for latching the side panels in their upwardly folded positions, and illuminating means carried by one of the side panels for directing light toward the bottom panel when the side panel which carries the illuminating means lies flat adjacent the bottom panel.

Abstract: A coil mount structure for use in a loudspeaker of moving coil type is disclosed which comprises a generally cylindrical member at around one end portion of which a center peripheral portion of a diaphragm and an inner peripheral edge portion of a damper are removably fixed and at around the other end portion of which a coil is provided.

Abstract: A stretcher supporting structure for use in an airplane, including an elongated stretcher supporting frame adapted to be positioned generally horizontally in the airplane, two leg assemblies connected to the frame adjacent the respective ends thereof, means for connecting the leg assemblies to the floor of the airplane, two straps connected to the frame on opposite sides thereof adjacent each leg assembly, and means for anchoring the other ends of the straps to the airplane with the straps oriented diagonally downwardly to brace the frame and its supporting leg assemblies. The stretcher supporting structure may be installed in the airplane in the space normally occupied by one or two of the seats with which the airplane is equipped, or it may be installed in a similar space with the corresponding seat back or backs folded downwardly and with the stretcher supporting frame located above such seat backs.

Abstract: The output voltage of an AM synchronous detector is compared with a reference potential level by a voltage comparator. A muting device connected with the output of the detector is controlled by a control circuit connected with the comparator. Through this control circuit, the detector output is immediately muted when the detector output level falls below the reference potential level, and the muting of the detector output is removed after a predetermined retardation when the detector output level exceeds the reference potential level.

Abstract: An air cleaner of the oil-bath type, in which dust-laden air at high velocity in an entry stream is first mixed with an oil spray and then impinged on an oil bath and deflected outwardly and upwardly through a filter bed to wet the filter bed with oil for catching dust carried by the air, surplus oil being drawn by venturi action from the filter bed and sprayed back into the entry stream for recirculation into the oil bath and into the filter bed, constantly washing the lower end of the filter bed and other parts so as to prevent clogging by the accumulation of dust.

Abstract: A radar which can be used in a system for identifying coded objects. A passive encoding array (label) for an object and having dipoles at selected dipole locations in the array, and a radar for scanning the array as it crosses the radar beam. The radar utilizes a doppler receiver and a matched filter processor to detect one of doppler, FM, and AM modulated FM signals from crossing targets. The radar output is a pulse code with pulses corresponding to the dipoles of arrays illuminated by the radar.

Abstract: A shaft angle transducer particularly suited for use as a magnetic compass card for providing an output signal linear with angular movement over a wide range, such as plus and minus 40.degree., with no zero dead band. A member with a plurality of radial segments, each having relatively opaque and transparent portions, with the proportion of the portions changing from segment to segment to provide an output varying as a predetermined function of angular position. A sensor with radiation source and detector, with the segments moving between the source and detector, with the segments in a disc configuration and in a wheel configuration.

Abstract: A device for completely vaporizing the fuel delivered to an internal combustion engine so as to minimize the emission of air pollutants. The device includes a heat conducting tubular housing, a heat conducting screen within and coaxial with the housing with an annular space between the housing and the screen, a heat conducting helical coil within the annular space and coaxial with the housing and the screen, and means for heating the helical coil, either electrically, or with heated air. In one form, a diffuser within and coaxial with the screen adjacent the inlet of the housing directs a fuel and air mixture outwardly into contact with the screen, helical coil and housing. In another form, a fuel injecting means within and coaxial with the screen adjacent the inlet end of the housing sprays fuel toward the outlet end of the housing and outwardly against the screen. A de-icer tube communicates with the inlet end of the housing for delivering heated air thereto under icing conditions.