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| Number | Title | Issue Date |
| 5120277 | Tensioner for a transmission belt A tensioner for a power transmission belt is disclosed comprising a return spring associated mechanically with a tensioner roller with which the belt cooperates for controlling the movement of said roller under the action of said spring, wherein the vibra... | 06/09/1992 |
| 5094059 | Hinged roof truss and double hinge therefor A hinged building truss, such as a roof truss, includes elongated wooden structural members connected by a double hinge joint. The joint has a central elongated flat plate having first and second pivots located toward respective ends of the elongated plat... | 03/10/1992 |
| 5054960 | Floating barriers for containing oil spills Floating barriers are provided with containment means (doublecoated with polyvinyl chloride) of woven twisted nylon thread and with low density polyurethane floating means. The two previous characteristics, along with a change in arrangement, size and sha... | 10/08/1991 |
| 5051019 | Space frame assembly A space frame node and connector assembly is provided in which the node is provided with a series of sockets each of which is formed into an inner and outer part, the inner part being screw-threaded for receiving a screw-threaded spigot portion of a conne... | 09/24/1991 |
| 5051213 | Method and apparatus for mixing fluids Method and apparatus are disclosed which are used to mix two fluids, two gases, or a fluid and a gas. The preferred embodiment is useful primarily for the aeration of water but can be used to mix any gas with a liquid. The method involves creating relativ... | 09/24/1991 |
| 5050537 | Automatic animal feeding system A feeding system for cows uses a track system which carries bowls in a first direction from each of the stalls in a stanchion type barn to a feeding room where the bowls are filled and back to the stalls. Each of the bowls is carried by a bracket and has ... | 09/24/1991 |
| 5050060 | Intrinsically safe power supply unit An intrinsically safe power supply unit, more particularly for face supports in mining, comprising an ac transformer connected to a rectifier and power resistors for limiting the current and connected to the dc voltage output, wherein the ac voltage trans... | 09/17/1991 |
| 5049025 | Automobile dolly A dolly for an automobile comprises a first part which is U-shaped and includes a first side for engaging the tires of the automobile and casters. A second part is removably attached to the first part and provides a second side which can be pulled toward ... | 09/17/1991 |
| 5047224 | Method for treating organic waste material and an oxidation catalyst/cocatalyst composition useful therefor An oxidation catalysts/cocatalyst composition of matter is useful in oxidizing organic waste material. Use of the oxidation catalysts/cocatalyst composition causes the reaction rate to increase and causes the energy required for the reaction to decrease. ... | 09/10/1991 |
| 5044928 | Pulse combustion device In a pulse combustion device including a combustion chamber having a cylindrical wall, a forward end wall secured to one end of the cylindrical wall for attachment with a liquid vessel and being formed with an inlet port to be supplied with a mixture of g... | 09/03/1991 |
| 5044929 | Ignition control apparatus for pulse combustor An ignition control apparatus for a pulse combustor, wherein the number of trials for energization of a spark electrode is calculated and memorized, the memorized number of trials is reset to an initial value or zero after ignition of the fuel-air mixture... | 09/03/1991 |
| 5043147 | Combined muffler and catalytic converter exhaust unit There is provided a new and useful combined muffler and catalytic converter exhaust unit for the exhaust stream from an internal combustion engine, the combined unit comprising a housing having an inlet and an outlet, first and second chambers within the ... | 08/27/1991 |
| 5041482 | Cool melt glue Hot-melt adhesives, useful for both glue-port and glue-gun applications, are formulated so that they can be applied at temperatures no higher than 280° F. and preferably at temperatures of at most 250° F. The adhesive compositions have a heat resistance... | 08/20/1991 |
| 5039345 | Fiber composite article and method of manufacture An article and method for its manufacture are described. The article is preferably a ladle used in the manufacture of metals and receives molten metal for further chemical processing in the ladle or for transportation. The ladle is transparent to a wide r... | 08/13/1991 |
| 5038753 | Liquid heating apparatus of the pulse combustion type In a liquid heating apparatus of the pulse combustion type, a mounting plate is secured to a side wall of a liquid vessel for supporting thereon an air-fuel mixer head outside the vessel and a combustion chamber inside the vessel, and an inlet pipe is sec... | 08/13/1991 |
| 5036709 | Paving materials testing machine An electronically instrumented combination kneader compactor and plane-strain, simple-shear testing machine for use in testing paving materials under cyclic loading and over a range of temperatures and various rates of shear has been described. A very sig... | 08/06/1991 |
| 5036593 | Trailer alignment guide A unitary trailer alignment guide for positioning a towing vehicle with respect to a trailer for connecting a trailer hitch includes a base, a telescoping upright member, a telescoping horizontal member joined at one end to the upper end of the upright me... | 08/06/1991 |
| 5032289 | In situ off-shore processing of urban sewage without using or contaminating urban land An offshore sewage treatment facility or sludge facility is serviced on a ship. The ship is secured and in position by means of a single point mooring system which is attached to the vessel's stem or stern and is connected to a submerged pipeline as a con... | 07/16/1991 |
| 5027871 | LPG tank control valve system 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... | 07/02/1991 |
| 5027923 | Extension device for a ladder An attachment for a ladder includes a housing and an extensible leg. The housing is clamped to the side of a ladder, and the extensible leg is extended to engage the ground after the ladder has been placed level. A bubble level is provided for visually de... | 07/02/1991 |
| 5028339 | Polymer matrix and method for retaining reactants in a polymer matrix A method for holding a reactant in a polymer includes combining reactant, hydrogel monomer and a quenching surrogate in a solvent, whereby the solvation of the reactant and the monomer is reduced. The monomer is then polymerized to form a polymer matrix f... | 07/02/1991 |
| 5026024 | Hose snap-action joint 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... | 06/25/1991 |
| 5026187 | Dispenser for hot-melt material 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 dispen... | 06/25/1991 |
| 5026198 | Lockable folding joint for foldaway ladder 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 inclu... | 06/25/1991 |
| 5026025 | Hose joint with opening-closing valve 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 surfa... | 06/25/1991 |
| 5024184 | Direct fuel injection internal combustion engine 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 ... | 06/18/1991 |
| 5022078 | Television signal enhancement and scrambling system 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 increas... | 06/04/1991 |
| 5020987 | Pulse combustion device 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 wit... | 06/04/1991 |
| 5021094 | Grouting composition 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 ... | 06/04/1991 |
| 5021463 | Method for making multicolored resin material and product thereof 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 materia... | 06/04/1991 |
| 5016601 | Slingshot with adjustable sight 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 t... | 05/21/1991 |
| 5017051 | Electrohydraulic control means for hydraulic self-advancing support units 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 con... | 05/21/1991 |
| 5013155 | Portable spectrophotometric instrument having vial holder and light integrator 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... | 05/07/1991 |
| 5011692 | Sustained pulsewise release pharmaceutical preparation 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 ... | 04/30/1991 |
| 5011583 | Corrosion prevention for a marine propulsion system 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 i... | 04/30/1991 |
| 5010679 | Fishing lure and fish hook 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 contai... | 04/30/1991 |
| 5008984 | Magnetic jewelry closure with clip 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 membe... | 04/23/1991 |
| 5009026 | Fish hook including an improved bait guard with a slider A bait-saving fish hook includes a rearward eye portion, a shank portion, and a forward hook portion together with a bait guard attached to the eye portion. The bait guard includes an elongated flexible member secured to the eye portion extending forwardl... | 04/23/1991 |
| 5009273 | Deflection apparatus There is provided a new and useful deflection method and apparatus for use in directional drilling, the apparatus comprising a housing which is adapted to be disposed about a drill string and to be rotatable relative to the drill string; a deflection memb... | 04/23/1991 |
| 5009384 | Overhead support system for TV monitors An overhead support system for TV monitors comprising a shoe releasably and slidably insertable into seated position into a pocket in an upper portion of the monitor housing. The shoe carries electrical contacts to mateably engage with corresponding elect... | 04/23/1991 |
