Abstract: A hand held household or hobby type spray gun is provided with a pistol grip housing having a transverse bore receiving a removable piston pump and nozzle assembly, suspending a removable container for the medium to be sprayed, and covered by a removable cap enclosing an electric motor for driving the piston of the pump. The pump and nozzle assembly is locked in the bore by a quarter turn rotation which seats a detent in a recess of the bore. The electric motor is energized from an external power source through a cord carried by the cap or from batteries which may be mounted in a chamber provided by the grip or handle portion of the housing. The housing may be a one-piece injection mold plastics material member, and the removable container for the media to be sprayed as well as the closure gap for the motor may also be injection mold plastic material members. The grip or handle portion of the housing span the rear side of the spray gun and has a front recess embracing the container.

Abstract: A midstream urine collection device (10, 110) includes a urine receiving cup (12) into which a sample of urine is deposited. A barrel (28) is attached to the receiving cup (12) and has a receiving bore (44) therein. A needle assembly (23) is mounted in the barrel (28) in flow communication with the inside of the receiving cup (12). An evacuated container (46) is adapted to be inserted into the receiving bore (44) of the barrel (28) so that a cannula (24) of the needle assembly (23) pierces a plug (50) on the container (46), whereby urine is drawn from the cup (12) into the evacuated container (46). The needle assembly may have a valve (25) closing off the flow through the needle cannula. The valve may be a valve sleeve (26) which also shrouds the end of the needle cannula.

Abstract: A preheater for a casting ladle includes a stationary horizontal refractory deck having vertical apertures in which are disposed refractory plugs, each of which supports an electrical heating element that depends downwardly from the refractory deck. A lifting table is movable into registration with the set of depending electrical heating elements and is also adapted to support the casting ladle thereon and to raise it into surrounding relation with the electric heating elements that depend from the refractory deck. Individual defective heating elements can be removed and replaced during operation of other operative heating elements.

Abstract: A power driven cleaning device for an aquarium includes filter suspended in the aquarium tank and through which water is circulated by an impeller. A first filter pad is followed by a filter cartridge, each of which spans the flow path, and which are clamped in place by a removable cover, for service.

Abstract: A cargo truck trailer has telescoped box-like top and bottom body portions with mechanism operated from a single control station which will raise and lower the top body portion to provide maximum cargo space that will clear overhead structures such as viaducts along the intended travel route so that a single vehicle trailer becomes useful at maximum capacity over a designated route. The top or roof body portion is guided by ribs or struts of the bottom body portion. The mechanism which raises and lowers the top body portion is housed within the bottom body portion preferably between its outer skin and inner liner. The control station is a single crank which drives gears and chains to simultaneously rotate a plurality of vertical screw rods at the corners and midsection of the body to raise and lower nut members carried by the top body portion.

Abstract: When levels of chrominance signals reproduced from a helical scan video tape recorder are controlled, two types of control signals are generated based on a level of color burst signal of the reproduced chrominance signals. One of the two control signals is responsive to relatively rapid level changes, and the other thereof is responsive to stationary errors based on head-tape contacting pressure changes during one revolution of a rotary video head.

Abstract: A high current electron source with a narrow energy band of the type employed in an electron beam printer has a beam generating system consisting of a cathode and focusing electrodes and an anode with at least one electrode functioning to astigmatically focus at least one electron crossover in the low velocity range. For varying the position and shape of the crossover in a simple manner for adaptation to particular use conditions of the high current electron source, the Wehnelt electrode of the electron source consists of one or more cylinder lenses or of an electrostatic multipole element, or an electromagnetic multipole element is disposed in the plane of a conventional non-ferromagnetic Wehnelt electrode with a circular aperture for the electron beam. By pole reversal of the Wehnelt voltage or of the coil current and by changing the size of the current, the shape and azimuth position of the first crossover in the cathode space can be varied to any configuration.

Abstract: The invention relates to a method for burning fine-grain material, particularly for the manufacture of cement clinker from cement raw meal. The material is thermally treated in a multistage burning process with a pre-heating stage, a calcining stage with a high-degree of calcination, a sintering stage in a very short rotary kiln and a cooling stage. Fuel is introduced both into the sintering stage in the short rotary kiln as well as into the calcinating stage. Hot exhaust air from the cooling stage is supplied both to the sintering stage as well as to the calcining stage as furnace air. The invention also relates to an apparatus for the manufacture of mineral products of the burning process such as cement clinker.

Abstract: A system for the generation of a light intensity control signal for a video amplifier of a data display device is disclosed which is connected with a video signal line and a pulse generator. When displaying characters composed of horizontal lines and vertical rows of points on a screen, the lines display a higher brightness than the points. The disclosed system derives from the video signal an analog light intensity control signal for the video amplifier with which the light intensity of the points is readjusted. The system includes a detector device connected with a video signal line, the detector device identifying the signal sequence associated to a point, a line or, a blank and a converter which derives a light intensity control signal therefrom.

Abstract: In addition to the overall sum code words, call progress tone sum code words are formed which, in addition to the conference parts, respectively include a different PCM word corresponding to a call progress tone. In the formation of the respective partial sum code words to be transmitted, by subtraction from individual conference components, an overall sum code word or a call progress tone sum code word are selectively taken into consideration depending upon whether a call progress word is to be fed in or not or, respectively, depending upon what call progress tone is concerned.

Abstract: Stress and crack-free development of resist layers or films, for example composed of PMMA, used in production of galvanically generated flat precision parts is achieved. Resist layers having a thickness of at least 100 .mu.m are exposed via electron lithography or x-ray lithography techniques whereby very fine structure patterns having dimensions in the micron and sub-micron range are attained and developed with a developer comprised of a mixture of a material selected from the glycol ether group, a material selected from the primary amine group, a material selected from the aqueous group and a material selected from the azine group. Aspect ratios of 30:1 are achieved without dark errosion. Residual PMMA components remaining after development, as well as the developer itself, are fully removed with a post-development rinsing with water so that no disruptive layer residues remain on the surface which has been uncovered through development.

Abstract: Apparatus and method for the galvanic deposition of aluminum from aprotic organoaluminum electrolytes utilizing a rotatable galvanizing globe, a rotatable electrolyte container, and tubular connecting means joining said container and said globe to one another.

Abstract: Apparatus and method for engraving with an electron beam such that depressions of different sizes can be generated in the surface of a workpiece and the different sizes of depressions are produced by an electron beam and wherein during periods when depressions are not to be formed the electron beam remains on but is defocused so that it does not form depressions. A modification of the invention provides that at times when the beam is not being used to cut depressions that it is pulsed wherein the short pulses of the beam which engage the work surface do not do any cutting.

Abstract: A venting slide fastener stringer for use on a cushion, a pillow, etc. has a warp-knit stringer tape including a pair of laterally spaced, elongate webs with a wale-free region therebetween, and a connecting thread or threads having portions laid in opposed marginal wales in the webs and substantially parallel portions extending transversely across the wale-free region to interconnect the webs, thereby providing a plurality of vent holes longitudinally along the wale-free region. The opposed marginal wales are more rigid than other wales in the webs, and the connecting thread or threads are more rigid than foundation threads making up the webs. A row of coupling elements is mounted on one of the webs remotely from the wale-free region.

Abstract: Apparatus and method for electronically retouching color images reproductions in which the color signals are generated by means of scanning image point by image point and by trichromatic master scanning and then the signals are digitized and the digital color values of the individual color components are stored in a storage medium and the stored color values are then changed by identifying the coordinates of the image points to be changed in the color image and simultaneously determining the coordinate identification and the locally dependent correction values for the digital color values of the color components and then changing the digital color values by applying correction values at the correction locations so as to obtain the retouched color values.

Abstract: Disclosed herein is method for assembling a pair of slide fastener stringers each having spaced sections in continuous rows of scoops and an apparatus for the same. The leading edge of the scoop row in the leading stringer is detected by a probe inserted into the guide groove of the binder member for the scoop row. The engagement of the leading edge and the claw of the probe retards the progress of the leading stringer thereby retarding the rotation of the feed roller for the leading stringer while increasing the speed of the rotation of the other feed roller for the trailing stringer, which is connected to the first feed roller through a differential transmission mechanism. After both of the stringers are brought into right alignment for exact engagement in the binder member, the claws disengage from the leading edges of the scoop row in the stringers and come out of the spaced sections. In this condition, the spaced sections in the stringers are detected individually by detecting lever means.

Abstract: A filter circuit for electrical waves including at least one line which supplies electrical input waves and at least one line for withdrawing output electrical waves and in which the frequency dependent transmission characteristic is determined by coupled line loops each of which is in the form of a line ring and wherein coupling between the line loops is unidirectional and the individual line loops are designed so that they have unidirectional transmission characteristics.

Abstract: A trigger device for electronic switches operating according to piezo-electric principles and having galvanic decoupling between the input control electronics and the controlled electronics switch has a piezo-ignition coupler which is a lamina of piezo-ceramic material having at least two spaced electrodes on one surface thereof and at least two counter electrodes in registry therewith on an opposite side thereof. The respective electrodes in registry form electrode pairs and one pair of electrodes is connected to the control electronics and another pair of electrodes is connected to the trigger electrode of the electronic switch. The lamina has a shape displaying an axis with more than two-fold rotational symmetry and the dimensions of the lamina are selected such that the frequency of an alternating signal supplied to the lamina is matched to the resonant frequency of the lamina at a value between 20 kHz and 500 kHz for inducing a mode of vibration according to the principle of radial oscillation.

Abstract: An automatically locking slider for slide fasteners has a locking member including a piece of resilient strip, preferably made of stainless steel, which is bent into a generally "3" shape having a U-shaped base extending around a transverse spindle of a pull tab, a locking prong extending from one end of the base, and an anchor extending from the other end of the base and terminating in a hook-shaped end hooked with a locking-member retaining nose on a slider's neck. The base is normally urged against the spindle of the pull tab by the resilience of the strip. The hook-shaped end of the anchor is normally urged against the nose by the resilience of the strip and is thereby prevented from being unhooked from the nose. Thus the locking member is held in position on a slider body solely by the resilience of the strip, requiring no bending or deforming of any part of the slider body that would make the slider defective from an aesthetic view.

Abstract: A recirculating sprayer adapted for mounting on a vehicle is improved for use at increased travel speed and for operation in higher wind conditions by angling the solid spray streams forwardly or rearwardly from a direction transverse to the travel direction. The sprays are employed in criss-cross, opposite pairs, with the spray stream patterns of adjacent pairs of spray nozzles abutting or overlapping one another for full coverage of all upstanding weeds or crops in an area traversed by the sprayer. A series of collector mats or panels may be arranged transverse to the travel direction, with sprays trained thereon for contacting each weed twice in its upstanding position once by each spray of a pair; the weeds may also be contacted once more as they are bent forward to pass beneath the panels and a reservoir thereunder. The collector may also be arranged in panels parallel to the travel direction, for increased ease in negotiating sloping terrain.