Abstract: A waveguide antenna (1) having a plurality of broad-side slots (S1-S3) is provided with one or more spatial filters (I, II) for suppressing the grid lobes (GL1,GL2) which occur in the radiated field as a result of the positioning of the slots. According to one embodiment, the spatial filter comprises two sections (I, II). The first section (I) comprises a box-like part which is mounted on the long side of the antenna waveguide (1) towards the slots (S1-S3) and has a height extension (a.sub.1) which is greater than or equal to the height extension (a) of the antenna waveguide. The other section (II) comprises two parallel walls which extend in the direction of the antenna axis. There is formed in this way an interface layer (G) which causes the grid lobes to be reflected back to the antenna aperture. A further embodiment of a spatial filter for the antenna waveguide is described.

Abstract: A high velocity pneumatic device having particular use for excavating or dislodging soil. The device includes a body or housing having a passage that connects a source of air under pressure, such as a compressor, to an elongated discharge tube. A valve mechanism is disposed in the passage and controls the flow of air through the tube. Mounted in the distal end of the tube is a nozzle having an inwardly converging upstream and an outwardly diverging downstream end which increases the velocity of the air being discharged through the tube. A manually operable trigger is directly connected to the valve mechanism and actuates the valve to discharge air through the tube. The nozzle is formed of a non-sparking metal, such as brass, while the tube is composed of an electrically nonconductive material, such as glass reinforced resin.

Abstract: This invention relates to specifically designing and genetically engineering recombinant baculovirus for producing, in a compatible insect system, a desired protein, virus, protein hybrid, or virus hybrid. In particular aspects, this invention relates to the use of different baculovirus promoters for the ultimate purpose of constructing a recombinant baculovirus designed for the investigator's specific need. For example, the recombinant baculovirus of this invention can be designed to produce a viral pesticide.This invention also describes the construction of a genetically engineered virus or virus hybrid (e.g. animal or human pathogen) which is not capable of replicating itself but is essentially identical to the authentic pathogen in terms of structure and antigenicity.

Abstract: An apparatus and method are provided for generating a foam from a preheated dye solution and subsequently applying the foam to continuous strands of yarn wherein the foam is driven by a pressure differential. The apparatus has a foaming pan for producing the foam from the dye solution and a gas. The pan opens into a foam transmission chamber at or near ambient pressure which fluid communicates with an evacuated spent foam discharge chamber across an open interface. The yarn is dyed by conveying it through the open interface and contacting it with the foam which is drawn across the open interface in a flow path perpendicular to the yarn by the pressure differential between the foam transmission and discharge chambers.

Abstract: A method for assembling a plastic ball valve having improved sealing means.

Abstract: A window pet porch provides household pets with timely access to a protected outdoors environment. It includes a cage having bottom and top interconnected by open mesh on three sides and a solid clear material, having an opening, on its fourth side. It is made of such size and weight as to be readily mountable into a window frame; it has suitable brackets and clamps for securing it there and so that its side of clear material faces the window. The opening in the solid clear material of the fourth side has as a closure device a swinging door horizontally pivoted at its top.

Abstract: High performance synthetic sodium aluminosilicate compositions, and the method of making the same by the hydrothermal reaction of certain delaminated kaolin clays with select sodium silicate reagents, result in enhanced performance flatting agents for paint systems and anti-block agents for plastic film applications.

Abstract: A dry solid animal feed composition in which biodegradable feed is contaminated with a mycotoxin and is admixed with a mycotoxin inactivating agent comprising particles of a phyllosilicate mineral capable of inactivating mycotoxins, said particles being coated with a sequestering agent in an amount sufficient to enhance the mycotoxin inactivating capacity of said phyllosilicate.

Abstract: A winding machine with receiving stations for winding rolls arranged on both sides of a roller, to which web-form material runs alternately (as viewed in machine transverse direction). On a machine frame there are arranged axially unslidable load rollers following one upon another over the usable machine width. The load rollers are movable with operating arrangement against the winding rolls. For the use of the load rollers it is merely required that there be selected those rollers which lie within the width of the corresponding web strip.

Abstract: A detachable scraper attachment for a flood bar having a pair of opposing opposite edges comprising a portion adapted to mount on a portion of the flood bar holder, a flange having an upper and lower edge, the lower edge being generally arcuate, the upper edge attached to the channel portion, and means for detachably affixing the scraper attachment to the edges of the flood bar.

Abstract: A plastic ball valve having improved ball sealing means.

Abstract: The invention relates to a novel method for transforming and rapidly regenerating plant tissue. The method employs target tissues which are the shoot apices thereby expanding the species range for transformation and reducing the risk of somaclonal variation.

Abstract: A traveling-wave ring-laser (10) to provide improved power stability single longitudinal mode characteristics, narrow lasing linewidth and smooth wavelength tuning. The ring-laser comprises an optical amplifier (12) that includes a first facet (16) and a second facet (42). Optical amplifier (12) generates laser light from first facet (16) ring-laser (10) directs a portion of the laser light from first facet (16) back into second facet (42). An Faraday rotator (32) and half-wave plate (30) direct a portion of laser light that second facet (42) receives to travel in one direction only from first facet (16) to second facet (42). By feeding back input from optical amplifier (12) first facet 16 into second facet 42, lasing occurs. Causing laser light from first facet (16) to travel in one direction provides for smooth wavelength tuning and stable power performance single longitudinal mode and narrow-linewidth characteristics in laser system (10).

Abstract: An equalizer having an adaptive viterbi analyzer and channel estimation circuits connected to each a state of the viterbi analyzer. The equalizer receives a filtered and sampled signal which during its transmission has been subjected to time dispersion. For each state, the estimation circuits each estimate a partial impulse response for the communications channel. The iterative estimation process begins by determining transition error signals between a old and a new state with the aid of a preceding partial impulse response. The estimation circuits estimate the current partial impulse responses for the new state using the part partial impulse responses, the transition vectors, and the transition error signals selected by the viterbi analyzer. The partial impulse responses are used to estimate symbols included in the received signal.

Abstract: Device for forming a cut in breast and belly of the carcass of a slaughtered animal comprising a mandrel, a cutting blade and two pressure rollers lying on either side of the mandrel engaging the rear side of the carcass near the head, each roller being fitted at the first end of an arm which at the other end is connected to a carrier situated beside the mandrel and extendable in the direction of the carcass, which arms can each be swung about the longitudinal axis of the carrier the roller being provided with a disc-shaped flange right angles to the roller axis.

Abstract: A sewing machine is provided with a device for stopping the drive in the case of a thread disturbance. The device has a light source, a first light guide device for transmitting the light beams to the monitoring point, a second light guide device, via which a signal can be sent to a receiver in the absence of thread at the monitoring point, and a control unit for signal evaluation and to report a thread disturbance, even in the case of maximum deflection of the thread at right angles to the pull-off direction, only when a thread disturbance does really exist. To achieve this, the first light guide device is designed, on its side facing the thread, in a plane perpendicular to the thread pull-off direction, with a radiation outlet which extends preferably in the horizontal direction. The first light guide device causes light beams to be sent over the maximum range of movement of the thread at equal radiation intensity over an entire radiation cross section.

Abstract: A method and apparatus for the transfer printing of a fabric web is provided. The apparatus includes a supply station for supplying a multi-layered web comprising a web of fabric to be printed and at least one substrate having a surface provided with a sublimation ink, the substrate being disposed in intimate frictional contact with the web of fabric so that the ink-carrying surface thereof is in contact with the web surface to be printed. The apparatus further includes a printing station for maintaining a slight pressure on the multi-layered web and for applying heat thereto to thereby effect the transfer of ink from the substrate to the web of fabric. A receiving station is also provided for separating the multi-layered web into a printed web of fabric and into at least one substrate, and further for collecting the printed web and substrate following the separation thereof.

Abstract: A modulator arrangement comprises two Mach-Zehnder modulators, a main modulator (2) and a compensation modulator (3) having non-linear transmission functions. The modulators (2, 3) are controlled by a modulating control signal (V), via electrodes (16, 17). A carrier wave (S1) from a laser (7) is power divided (a, 1-a) into part-waves in a power divider (5) between the modulators (2, 3). The modulated part-waves (S2, S3) are superimposed at an output (14) to produce a resultant modulated wave (S4). A linearized transmission function between the control voltage (V) and the power of the resultant modulated wave (S4) has a radius of curvature whose length is maximized within a control voltage range, so as to minimize intermodulation distortion. The mean slope of the transmission function is maximized within this range. At a common control voltage (V) for the modulators (2, 3), the modulator arrangement has an optimal transmission function at a length ratio b=.sqroot.

Abstract: The present invention is directed to a liquid electrolyte for an electrolytic capacitor, as well as an electrolytic capacitor made therewith. The electrolyte includes a liquid solvent portion comprising one or more N-substituted pyrrolidones in the amount of at least 40% and water in the range of about 0.2 to about 8%. The electrolyte includes a solute portion comprising an amine salt and boric acid. The amine salt consists of a dicarboxylic acid and an amine. The dicarboxylic acid has 3 to 40 carbons and is present at a level of 0.1 to 4 moles per kilogram of solvent. The amine part is either a tertiary or secondary amine and is present at a level of about 0.2 to 4 moles of active amine nitrogen per mole of dicarboxylic acid. In addition to the above-described electrolyte, the electrolytic capacitor includes a pair of electrodes, at least one of which is composed of a film-forming metal.

Abstract: A double-coating cup for applying two protective coatings simultaneously to an optical fiber includes a body having an bore formed therein and provided with a plurality of first and second coating-material inlet channels. A die holder is positioned in the bore in the body and the outer surface of the die holder has first and second slots formed therein positioned opposite the first and second coating-material inlet channels, respectively. The die holder also has first and second radial bores formed therein which communicate with the first and second slots, respectively. A guide die having a bore formed therein is positioned in the bore in the die holder and has a bore formed therein. First and second die nozzles and an intermediate die guide positioned therebetween are disposed in the die holder bore.