Abstract: An improved warp knit having colored surfaces comprised of three or more colors can be made across the same wales. Threads having a color which is covered in one colored surface run as floats, and threads with a color forming the colored surface are placed in a pattern connecting the floats with one another. A fabric or twill pattern extends across at least a number of wales which is less by 1 than the number of colors. Accordingly adjacent floats consist of at least two differently colored threads.

Abstract: A single sideband modulator provides a means of translating low frequency baseband signals directly to radio frequency in a single stage. Such modulators, providing suppressed carrier and one or two of the sidebands, facilitates the transmission of intelligence with significantly increased gain over AM transmission. Control signals are continuously generated to keep the local oscillator breakthrough and image sidebands down to an insignificantly low level. This is achieved by monitoring amplitude of the RF output of the single sideband modulator, and comparing this with the baseband signals. By adjusting the d.c. offsets at the baseband inputs to the balanced modulators, carrier breakthrough is cancelled. By adjusting the relative phases of the baseband signals, deviations from the 90.degree. split are compensated. By changing the amplitude of one of the baseband signals, the level of one of the RF paths is adjusted to achieve amplitude balance.

Abstract: A microwave polarizing lens structure having two concentric hemispherical arrays of metallic linear scattering elements (dipoles) supported by thin walled dielectric shells. It has the property of controlling the sense of polarization, the ellipticity ratio and shape of the radiation pattern of the antenna contained within it.

Abstract: A two-channel optical fiber fused coupler comprising two optical fibers, each with a core and cladding, fused together at a narrow tapered waist. The first channel is at a wavelength of .lambda..sub.1 and the second channel is at a wavelength of .lambda..sub.2 where .lambda..sub.2 is longer than .lambda..sub.1. The coupler is fabricated to have a characteristic wavelength .lambda..sub.0 such that for wavelengths .lambda..sub.2 longer than .lambda..sub.0 coupling occurs and for wavelenghts .lambda..sub.1 shorter that .lambda..sub.0 the light at .lambda..sub.1 is core guided throughout the coupler and thus does not couple across.

Abstract: An optical sensor comprising an optical fiber having a core covered by a cladding, the cladding having an index of refraction different from that of the core, apparatus for retaining the fiber in a sinuously looped disposition, apparatus for fixing the fiber to an object to be sensed whereby movement to be sensed results in one or both of accordion expansion and contraction of loops of the fiber and microbending of the fiber, apparatus for applying a first optical signal into one end of the fiber, apparatus for detecting a resulting optical signal from the other end of the fiber, and apparatus for comparing the first and resulting optical signals to obtain an indication of the movement.

Abstract: A mounting head for fitting a socket with an electronic component comprising a mounting tongue located between two jaws having at least one intake port for holding a component, a first lifting device for shifting the mounting torque between the two jaws in a first direction, a first supporting headpiece for the jaws which is movable in the first direction toward the socket until the jaws come to rest against the socket after which the tongue may be shifted in the direction of the socket, a centering plate extending transversely to the jaws retained on a first headpiece together with the jaws and tongue, the headpiece being comprised of the first lifting device, the first headpiece being supported by a second headpiece which is situated at the side of the centering plate, the second headpiece being comprised of a second lifting device for shifting the first headpiece transversely to the centering plate and transversely to the first direction.

Abstract: This invention relates to a method of creating an index grating in an optical fiber comprising disposing a slit mask containing one or more slits over a side of an optical fiber, illuminating the fiber through the slit mask by substantially monochromatic ultraviolet light for a short interval, whereby an index grating line is created and stored in the core of the fiber.

Abstract: Apparataus for butt joining hanging conveyor supports having a C-shaped rail section in which conveying hangers can travel back and forth along the rail section. The supports each have a hollow section above the rail section and trolley wires running along at least one vertical side of the supports. Connecting parts are disposed between ends of adjacent supports, the hollow section having at least one profiled section in the shape of a square standing on a point. A square tube connects the ends and bridges the connecting parts and are inserted into the profiled sections at the ends of adjacent supports. Tie rods connect the ends of the adjacent supoorts. At least one L-shaped angle iron is disposed on each of the top sides of the ends of adjacent supports. The angle irons are connected to one another via at least one screw bolt and act, on both vertical sides of the ends of adjacent supports, on the tie rods which connect the ends together.

Abstract: A thrust producing apparatus comprising a gyrostat having a gyrostat wheel, apparatus for supporting the gyrostat, apparatus for toppling the gyrostat creating precessional force in a predetermined direction against the supporting apparatus, and apparatus for rotating the gyrostat into an orientation whereby it can again be toppled while avoiding the creation of precessional force in a direction opposite to the predetermined direction. Controlled unidirectional movement of the apparatus based on gyrostatic precession is thereby obtained.

Abstract: In order to largely prevent formation of mist in a nozzle head which is attached to a high-pressure paint spray gun, a small spigot from which the paint issues has a very small thickness of less than 0.5 mm. A circular air jet nozzle which surrounds the spigot and beyond whose outlet area the spigot projects, is provided with a depression which fans out the circular air jet. The circular air jet nozzle is surrounded by a rim of air bores which open to the same annulus as the circular air jet nozzle and which have a smaller total cross-sectional area than the area of the circular air jet nozzle and which produce a rotary air umbrella encircling the circular air jet.

Abstract: An apparatus for correcting narrowing of a fluid vessel of the body comprising a catheter, for insertion into the blood vessel at a location remote from a region of narrowing, and a fluid vessel liner. The liner is comprised of a radially resiliently compressible tube having an elongated split along one side thereof. The edges of the sides of the liner on each side of the split overlap each other. The liner is contained within the catheter adjacent a tip of the catheter in a compressed condition. The catheter is constructed for expulsion of the liner from the catheter forward of the catheter at the region of narrowing, thereby facilitating expansion of the tube to a natural expanded condition so as to support the blood vessel from the interior to the diameter of the tube in its naturally expanded diameter.

Abstract: A solar collector comprising a collector frame surrounding a transparent collector pane, the frame being mounted to the frame of an existing window inside a building, a plurality of narrow heat sinks fixed to opposite sides of the frame containing solar energy absorbing and retaining means, the heat sinks being spaced so as to allow significant amounts of solar illumination incident on the existing window to pass through the collector pane into the building, a lower port passing through the solar collector and located adjacent the bottom of the collector and an upper port passing through the solar collector adjacent the top of the collector, whereby air from the building can pass through the lower port into a space between the existing window and the collector pane, and out the upper port into the building, thereby heating the interior of the building.

Abstract: In order to delay the drying of an aqueous writing fluid at an exposed point of a writing utensil, an ether is added to the aqueous writing fluid, the ether having a polyglycol radical and a single alcohol radical whose gel point is above 30.degree. Celsius and which is dispersed in the writing fluid. An example of such an ether is cetyl alcohol-n-polyglycol ether with n=5 or 6.

Abstract: A fused twin biconical taper fiber optic splitter comprised of a pair of non-identical monomode or nominally monomode optical fibers having predetermined cladding diameters fused at respective narrowed waists, the cladding diameter of one fiber before coupler fabrication being greater than the other, whereby wavelength selective coupling between one and the other fiber is obtained.

Abstract: A trolley carriage comprising rollers for carrying the trolley carriage along a bearing rail. The rollers are supported by at least one roller support of the trolley carriage. The bearing rail has live rails which are insulated from one another extending along the bearing rail, and the trolley carriage has sliding contacts which are in flexible contact with the live rails. A common housing part which is connected to at least one roller support via a detachable quick coupling supports the sliding contacts.

Abstract: Dual polarization microstrip array antennas for high efficiency power reception or transmission of electro-magnetic waves are described. The antennas are easy to manufacture, applicable over a wide range of frequencies and angles of incidence, and permit true conformal application and high power handling. The antenna, according to an embodiment, has an array of microstrip patch antenna elements, wave filters, matching stubs and rectifier terminals, all highly symmetrically arranged to each other on one side of a dielectric layer. A common ground plane is provided on the other side of the dielectric layer. Rectifiers are connected to the terminals to produce rectified outputs of each patch antenna element.

Abstract: A traffic control device for use on school buses which locates the traffic control sign in the normal field of view of oncoming traffic, yet is robust, can be extended and retracted automatically and rapidly, and substantially does not suffer wind, acceleration or deceleration damage during movement of the school bus. The traffic control device is comprised of a traffic control display such as a stop sign, apparatus for supporting the display in a horizontal plane adjacent the vehicle, and apparatus for thrusting the display outwardly from the side of the vehicle while rotating the display through 90.degree. to change the facing direction of the display to a plane visible to the traffic. The supporting apparatus is comprised of a beam, the display being fixed to the end of the beam. The rotating apparatus is comprised of the apparatus for thrusting the beam outwardly from the vehicle whereby the display is rotated through 90.degree.

Abstract: In a tactile sensor, a first conductive path made of an electrically resistive material, which is elastic, is fixed to a foil-like base. At points of intersection with good electrically conducting conductive paths, which are fixed to a second elastic foil, the first conductive path has a uniformly curved convex surface. If pressure is exerted on the second flat foil, then the convex surface of the first conductive path is deformed in the area where the pressure is exerted so that, in this area, the first good electrically conducting conductive path presses against the first conductive path over a pressure-responsive longitudinal area, so that the total resistance of the first conductive path changes in a pressure-responsive manner. By measuring the total resistance and the potential of the good electrically conducting conductive paths, the pressure exertion can be determined as to location and amount of pressure.

Abstract: A conveying system comprised of a rail and at least one transport hanger which can travel back and forth along the rail on rollers, the rollers having horizontal axes of rotation, the rail having horizontal conveyer support projections which are located at the bottom of the rail and along which the rollers are positioned for travel back and forth along the rail carrying the transport hanger with them, trolley wires which are insulated from one another being located on the rail to the side of the path of motion of the transport hanger, the rail having guideways for rollers of a trolley carriage at the side of the path of motion of the transport hanger for facilitating support and movement of the trolley carriage back and forth at the side of the transport hanger and independently thereof, the trolley carriage having sliding contacts for engagement of the trolley wires for powering a tool that may be carried by the trolley carriage.

Abstract: Cleaning apparatus for textile machines disposed in a row, which cleaning apparatus can be moved back and forth among the textile machines. The cleaning apparatus has blow hoses provided with nozzles to blow off loose fuzz from the textile machines, and at least one suction hose for sucking up the blown off fuzz. For each textile machine at least one stationary blower is disposed at the machine side opposite from the suction hose and has at least one blast nozzle for blowing air covering the floor below the textile machines. The cleaning apparatus has a vertically extending, relatively rigid air blast duct which docks at the blower when the cleaning apparatus is aligned with the blower.