Abstract: A multi-functional control valve system for an LPG tank. The valve system comprises, on a single frame, a fill port for delivery of LPG from a supply source to the tank, a manual shut-off valve for the fill port, a delivery port, independent from the fill port, for passage LPG from the tank to a delivery line for utilization at a location remote from the tank, a manual shut-off valve for the delivery port, fuel level monitor associated with a frame responsive to the level of LPG in the tank and an automatic shut-off associated with the fuel level monitor and positioned in the fill port automatically to move to close the fill port and stop delivery of LPG to the tank when the fuel in the tank reaches a predetermiend level, and automatically releasable from that closed position when LPG in the tank falls below that level, as indicated by the monitor.

Abstract: A dispenser for hot-melt materials, such as adhesives, includes a heat-conductive, removable cartridge containing the adhesive to be melted, a chamber for receiving the cartridge and a heater adjacent the cartridge for melting the adhesive prior to dispensing through a nozzle. Pressure is applied through a plunger to expel the adhesive through the nozzle.

Abstract: A hose joint with an opening-closing valve comprises: a cylinder member having an axial bore, a center bore projecting from the inner surface of the axial bore in the direction of the center of the axis, and a ring-shaped valve seat in which one end surface of the valve seat constitutes a valve seating surface; a valve body comprising a shaft-shaped portion and a head portion formed at one end of the shaft-shaped portion, and an O-ring for sealing between the outer surface of the shaft-shaped portion and the inner surface of the center bore when the head portion is in contact with the valve seating surface; and a spring for urging the valve body in the direction of allowing the head portion of the valve body to come into contact with the valve seating surface. The operation of engaging an insert pipe member, fixed to a hose, with the cylinder member opens the valve seat and the valve body. Disengagement of the insert pipe member from the cylinder member closes the valve seat and the valve body.

Abstract: A hose snap-action joint includes a cylinder member comprising an arc-shaped inwardly-directing engaging portion disposed on the inner surface thereof projecting in the radial direction inwardly; an insert pipe member; an engaging member comprising an arc-shaped outwardly-directing engaging portion projecting in the radial direction thereof outwardly, and the outwardly-directing engaging portion made engageable with the inwardly-directing engaging portion at a predetermined angle position by the engaging surface thereof facing in the direction perpendicular to the axial direction thereof; a locking ring disposed in a manner rotatable integrally with the engaging member and relatively movable in the axial direction thereof by a predetermined distance; a spring for urging the locking ring to the cylinder member; and a locking mechanism comprising a locking groove formed on the cylinder member and a locking portion formed on the locking ring.

Abstract: In a lockable folding joint of a ladder having two arms with their flat heads pivoted to one another, a detent block used to engage one of spaced notches of one of the flat heads is held resiliently and firmly by an improved mechanism. The mechanism includes a one-piece curved rod spring which has two opposite arc-shaped rod portions whose one ends are attached to the detent block, two coiled portions formed at another ends of the arc-shaped rod portions and a U-shaped rod portion extending from the coiled portions. A spring plate has a rolled end pivoted to one of the arm with the same pivot pin as the coiled portions. The U-shaped portion depresses the spring plate so that the hook end of the spring plate is engaged tightly with the detent block.

Abstract: A direct fuel injection internal combustion engine comprises an auxiliary piston in an auxiliary cylinder for modulating sharp pressure rises in the combustion chamber. The main piston has a cavity into which injected fuel is directed. The fuel injection stream and the output from the auxiliary cylinder intersect.

Abstract: A batch process for making a resin includes adding at least one portion of colored resin material to a resin base material of another color and mixing the combination including the colored material only sufficiently to incomplete blend the colored material into the base mix so that the colored material is only partially dispersed in the resin base. The multicolored product may be foamed or unfoamed material.

Abstract: In a pulse combination device including a housing forming therein a combustion chamber, a cylindrical support member joined to the housing to form a mixing chamber in open communication with the combustion chamber, a perforated end wall member coupled with an open end of the support member to permit inward flow of the air passing therethrough into the mixing chamber, a cylindrical member mounted in the center of the end wall member to form therein a gas passage in open communication with the mixing chamber, an annular plate formed with a plurality of air inlet ports and being secured to annular end surfaces of the end wall member and the cylindrical member, a shroud housing assembly arranged to form therein an air intake chamber in open communication with the inlet ports through the perforated end wall member, and a blower arranged to forcibly supply the air into the air intake chamber, a deflector plate is mounted in place in the mixing chamber to block a reverse flow of combustion products applied thereto f

Abstract: A television signal is distorted by passing it through a distortion amplifier which applies a Gaussian distortion curve to the signal. The curve has a maximum increase in amplitude of about 38 dB, which is about 30 dB with respect to the amplitude increase of the video carrier. The signal is further modified by the addition of gated jamming signals between the video and audio carriers. The jamming signals are present only during the horizontal and vertical blanking intervals and so do not affect the quality of the picture reproduced by the receiver. The distorted television signal is restored by applying a filter function which is the inverse of the distortion function. The gated jamming signals are removed by the restoring filter to a degree which permits the television receiver to read the horizontal and vertical sync signals and the color burst signal during the blanking intervals.

Abstract: A grouting composition for sealing a borehole or other cavity contains 90-99.9% finely divided water swellable clay and 0.1-10% polyacrylate thinner having a molecular weight of about 5,000 to 95,000. The grouting composition is mixed with fresh water to provide a completely reswellable, unflocculated, easily placed, low permeability sealing composition. The thinner allows a very high concentration of water-swellable clay in the composition. A preferred grouting composition contains 98-99.9% sodium bentonite and 0.1-2% polyacrylate thinner of molecular weight of about 2,000 to 50,000. In use, 50lb. of the preferred grouting composition is mixed with 11-14 gallons of fresh water, to provide a grouting mixture which includes about 25-40% reswellable solids.

Abstract: A control means for hydraulic self-advancing support units for underground working, comprising at least one electrohydraulic control device comprising an electric circuit for energizing electromagnets which actuate hydraulic valves, a command keyboard connected to the energizing circuit, a display connected to the energizing circuit and two multipole connectors for connecting the control device to respective adjacent devices, the multipole connectors being connected to one another and to the energizing circuit by electric lines inside the control device, characterized in that the energizing circuit is substantially made up of a CPU control sub-assembly, a keyboard and display sub-assembly, and a magnet control sub-assembly, these sub-assemblies being interconnected by a common bus line, the line connection between the plug-in connectors comprises at least one flexible printed circuit board connected by at least one ribbon cross-connection to one of the three sub-assemblies, and the magnet control sub-assembly

Abstract: A slingshot includes a hand grip and a crotch which are adjustably mounted on a shoulder engaging stock. The crotch has a sighting element which is adjustable for elevation and windage. The sighting element extends into the field of view and is flexible to allow the projectile to push it out of the way without affecting the path of the projectile.

Abstract: A portable hand held instrument is capable of making accurate colorimetric measurements in the field. The instrument has a body which houses the electronic circuitry and a door which allows a vial having a solution to be measured to be placed therein. The vial is illuminated lengthwise by a light beam of two wavelengths, one of which serves as a reference. The light emerging from the top of the vial is spatially integrated and directed to a detector. The detector measures the intensity of the transmitted light, and the electronic circuit determines the difference between the logarithms of the detected signals. This difference is multiplied by a constant to produce a signal representative of the concentration and is displayed. The resolution of the measurement is automatically increased when the processor senses that the signals are too small.

Abstract: A marine propulsion system of the type having a sacrificial anode for corrosion protection of the casing includes structure whereby the propeller is electrically insulated from the casing and the sacrificial anode. The structure includes spacers made of insulating materials, spacers having insulating coatings, or insulating coatings on the surfaces of the propeller or the propeller shaft. Electrical insulation of the propeller prevents unsightly and efficiency-reducing depositions on the propeller surfaces and reduces the required size of the anode.

Abstract: A pivot system used in a weedless fishing lure enables the barbed point to be exposed only when a fish strikes the lure. The hook eye is restrained by a resilient band, such as an elastic band, on the outside of the lure. Alternatively, the hook is contained within the lure body. The barbed point is concealed within a slot in the lure until a fish strikes the lure, at which time tension is put on the line and the fish hook is rotated so that the barbed point is revealed. The fishing line is attached to a portion of the fish hook, extending from the shank, positioned in the slot through the lure. A fish hook used with the lure has an arm extending from the shank to which the line is attached.

Abstract: The invention relates to sustained pulsewise release pharmaceutical preparation which comprices drug-containing polymeric material layers (layers A) and polymeric material layers containing the drug in question only in a slight amount or free of the drug (layers B) disposed alternatingly, with the whole surface extending in the direction perpendicular to the layer plane being coated with a polymeric material which is insoluble in water or scarcely soluble in water (polymeric material C).This pharmaceutical preparation of this invention is designed so that active ingredients which should desirably be released pulsewise can be released therefrom in a pulse-like and clinically significant manner and thereby the pharmacological effects of said active ingredients can be maintained for a prolonged period of time.

Abstract: A jewelry closure includes a pair of closure members for magnetically engaging together. One or both closure members includes a magnet. A first closure member of the pair is supported by a casing which extends outwardly to receive the second closure member when both closure members are magnetically engaged together. The closure is secured by a clip attached to the outer surface of the casing. A portion of the clip lies adjacent an outer end surface of the second closure member when the closure is secured. In closed position the clip prevents the closure members from being separated when the jewelry closure is secured.