Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 5239823 | Multiple layer cooled nozzle liner The present invention is a multiple layered nozzle liner for two-dimensional nozzles which provides both convective and film cooling, and incorporates a highly maintainable thermal barrier coating.... | 08/31/1993 |
| 5239824 | Evaporative emission control system for internal combustion engines An evaporative emission control system for an internal combustion engine having an exhaust passage, an exhaust secondary air supply system connected to the exhaust passage for supplying secondary air thereto, has an ECU which detects an amount of evaporat... | 08/31/1993 |
| 5239825 | Exhaust emission control device for outboard motor The present invention provides an improved exhaust emission control arrangement for an outboard motor. A catalyst material holding structure is mounted within an exhaust passage of an engine. A thermally insulating interstice is located between an inner w... | 08/31/1993 |
| 5239826 | Exhaust system for engine An exhaust system for an engine having two groups of cylinders includes a small capacity catalytic converter disposed in an exhaust manifold for one group of cylinders and a larger capacity catalytic converter disposed in an exhaust manifold for another g... | 08/31/1993 |
| 5239827 | Hydrostatic track ring snubber A fluid pressure independent, mechanically controlled dampener for a hydrostatic transmission pump track ring is shown. In one embodiment, two opposing wedge-shaped blocks are biased against each other by a spring-loaded bolt. A pad, axially adjacent the ... | 08/31/1993 |
| 5239828 | Two-stage valve A two-stage brake control valve has a larger first stage and a smaller second stage. First stage operates to fill a brake. Then, after a transition phase only the second stage is used to supply the working pressure. A check valve is between the first stag... | 08/31/1993 |
| 5239829 | Powder activated tool with crusher sleeve An explosively operated tool includes a ram and an anvil. The ram is driven towards the anvil by ignition of a cartridge. A crusher sleeve is provided on the ram such that, in the event the ram is driven towards the anvil without a member or members there... | 08/31/1993 |
| 5239830 | Plural engine power producing system Two gas turbine engines are interconnected through a pneumatic, mechanical, hydraulic, or power link. This power link runs from the gas producer shaft of one engine to the gas producer shaft of the other engine either delivering or absorbing power directl... | 08/31/1993 |
| 5239831 | Burner having one or more eddy generating devices A burner comprises at least one swirl member for mixing a fuel with an air previously to burning of the fuel, and at least one eddy generating device which is arranged in a flow of a mixture of the fuel and air to generate an eddy flow in the flow so that... | 08/31/1993 |
| 5239832 | Birdstrike resistant swirler support for combustion chamber dome A backing support or bumper mounted downstream of the disk shaped flange of the venturi in adjacently lying fuel cup assemblies and extends to a mid portion of each flange to prevent rotation of the flange and possible disengagement of the fuel nozzle in ... | 08/31/1993 |
| 5239833 | Heat pump system and heat pump device using a constant flow reverse stirling cycle The four processes of a reverse Stirling heat pump cycle; isothehermal compression with the heat of compression being transmitted to a constant, relatively high temperature sink, regenerative cooling, isothermal expansion with heat flow from a cooler, con... | 08/31/1993 |
| 5239834 | Auxiliary outside air refrigeration system The invention pertains to an auxiliary outside air refrigeration system for use in combination with a conventional refrigeration system to supply refrigeration to an enclosure whereby cold outside air is used as the cooling medium. A differential thermost... | 08/31/1993 |
| 5239835 | Refrigeration system consisting of a plurality of refrigerating cycles The present inventions are intended to improve heat efficiency of a refrigeration system having plural refrigerating cycles of different evaporating or condensing temperatures typically used in breweries. Each of main lines of different evaporating temper... | 08/31/1993 |
| 5239836 | Electric control apparatus for ice making machine An electric control apparatus for an ice making machine having an upright ice making plate arranged above a water tank, a water valve arranged to be opened during the defrost cycle of operation for supplying fresh water into the water tank through the ice... | 08/31/1993 |
| 5239837 | Hydrocarbon fluid, ejector refrigeration system A refrigeration system particularly suitable for an automobile air conditioning system is disclosed. The system includes an ejector to raise the pressure of the working fluid to the condenser pressure and a boiler which utilizes waste heat from the automo... | 08/31/1993 |
| 5239838 | Heating and cooling system having auxiliary heating loop An apparatus and method for exchanging heat energy between a refrigeration circuit and a hot water system utilizes a solar heated water tank or a conventional water heater. In a wintertime operation, condensed refrigerant receives heat from either the sol... | 08/31/1993 |
| 5239839 | Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media A thermal energy storage apparatus for use in refrigeration and air conditioning holdover systems is disclosed. The apparatus comprises thermal energy storage media encapsulated in a way that enables use of corrosive and/or aqueous thermal energy storage ... | 08/31/1993 |
| 5239840 | Decorative insert for artificial fingernails A detachable decorative insert which is insertable in an artificial fingernail fitted with a securing aperture. A cylindrical base of the decorative insert is designed to fit in the securing aperture where the decorative insert or a carrier for it is arra... | 08/31/1993 |
| 5239841 | Method of decorating a human breast A spring wire or other spring-like material is formed with a circular ring portion which has a diameter adapted to fit snugly around a nipple of a human breast. The wire or material also forms two overlapping end portions which project outwardly from the ... | 08/31/1993 |
| 5239842 | Spring ring adjuster An attachment device for a finger ring for improving the fit of the ring is constructed from a clamp, an elongated spring secured by the clamp, and a resilient sleeve disposed upon the spring. The clamp is of monolithic construction, fabricated from a pie... | 08/31/1993 |
| 5239843 | Knitting machine for the production of plush goods For the production of plush knitted goods containing stitches made from main and plush threads, main threads and plush threads are fed to hooks and sinkers, at least the plush threads are pre-formed to plush thread loops by drawing back the knitting tools... | 08/31/1993 |
| 5239844 | Latch needle for a loop-forming textile machine A latch needle for a loop-forming textile machine includes a needle shank; a sawslot provided in the needle shank and being defined by two parallel-extending needle shank cheeks; a rivet traversing the sawslot and being rotatably supported in the needle s... | 08/31/1993 |
| 5239845 | Device for changing and controlling the yarn feeds in a double-cylinder circular knitting machine A device for feeding yarn to a circular knitting machine of double-cylinder type with a plurality of yarn guides, and a system for controlling and cutting the yarn ends. The device comprises a suction nozzle in a position external to the cylinders and a r... | 08/31/1993 |
| 5239846 | Knitted gloves and method of processing edges of gloves in the knitting process A method for knitting gloves and a glove so knitted by a flat knitting machine which includes forming stitches of several circumferential courses of the knitted material which make up the wrist edge aperture domain. The method uses a knitting process in w... | 08/31/1993 |
| 5239847 | Agitator for a washing machine An agitator for a clothes washer includes a base and a plurality of blades projecting generally radially outwardly along the base. Each blade, which is of generally S-shape as viewed in plan, includes first and second sides which are of mutually different... | 08/31/1993 |
| 5239848 | Truck gladhand lock apparatus A gladhand structure arranged for pneumatic communication between first and second conduits includes confronting and interlocking housings, with the housings including projecting flanges extending in a parallel relationship relative to one another, with t... | 08/31/1993 |
| 5239849 | Automobile and property anti-theft apparatus A combination vehicle steering wheel locking and article protection apparatus comprises an elongate, rigid locking bar having joined at one end region a first, longitudinally--opening fork configured for fitting over a conventional vehicle steering wheel ... | 08/31/1993 |
| 5239850 | Method for bending elongated materials in a continuous manner A method for bending materials in a continuous manner with a bending machine having a fixed supply head and a movable bending head includes feeding material continuously along a material feeding direction through channels of the supply head and bending he... | 08/31/1993 |
| 5239851 | Rolling method of multi-high rolling mill for obtaining accurate sheet crown A five-high rolling mill is disclosed which includes an upper work roll backed by an intermediate roll and a backup roll and a lower work roll backed up by a single backup roll. Control benders are provided on each of the intermediate roll and the upper a... | 08/31/1993 |
| 5239852 | Apparatus and method for forming a tubular frame member An apparatus for forming a frame member for an automobile from a tube blank applies internal hydraulic pressure to the blank, tangent bends and preforms the internally pressurized blank into a preformed tube having a desired horizontal profile configurati... | 08/31/1993 |
| 5239853 | Device for bending sheet metal A folding machine in which a metal sheet is clamped between an upper and lower clamp, and the section of sheet extending out beyond the clamps is bent through a given angle by a bending cheek. During the rotating motion of the bending cheek, the bending c... | 08/31/1993 |
| 5239854 | Pivoted body and fire straightening rack A generally horizontal vehicle supporting rack is provided for support from a floor surface and includes depending support means intermediate its opposite ends for support from the support surface and mounting the rack for oscillatory movement between a h... | 08/31/1993 |
| 5239855 | Positional calibration of robotic arm joints relative to the gravity vector Methods of calibrating robotic manipulators are disclosed. The present invention uses an inclinometer or a leveling device to provide a reference to calibrate each encoder for each joint of a robotic manipulator. The inclinometer or leveling device is mos... | 08/31/1993 |
| 5239856 | Apparatus for producing standard gas mixtures The present invention provides an apparatus for performing a process for producing standard gas mixtures which entails purifying a raw gas using a gas purifier (3) such as a known two stage gas purifier system, thereby generating a high-purity diluent gas; mix... | 08/31/1993 |
| 5239858 | Method and apparatus for the automated testing of vehicle fuel evaporation control systems A method and apparatus for the testing of a vehicle fuel evaporation control system, which typically includes a fuel tank, vapor adsorption canister and purge valve, consisting of the introduction of a non-reactive gas into the control system and the subs... | 08/31/1993 |
| 5239859 | Method and apparatus for leak testing a hollow body A method and apparatus for leak testing a hollow body wherein the hollow body is placed in a test chamber. The hollow body is exposed to one of a positive or negative differential pressure between an internal pressure of the hollow body and a pressure in ... | 08/31/1993 |
| 5239860 | Sensor for measuring alcohol content of alcohol/gasoline fuel mixtures An alcohol sensing device is provided for determination of the alcohol content within an alcohol/gasoline fuel mixture which is being provided for the operation of an internal combustion engine. The sensing device uses infrared spectrometry measuring tech... | 08/31/1993 |
| 5239861 | Device for indicating contamination degree of hydraulic circuit and method of judging the contamination degree Two or more filters of different filtration particle size capabilities are arranged in a hydraulic circuit such that hydraulic oil containing contaminants is passed through the filters, either in series according to the order of the filtration particle si... | 08/31/1993 |
| 5239862 | Apparatus and method for measuring fluid properties A meter for measuring a material property of a fluid comprises a pair of parallel passage (6, 8) arranged in a line (2). The passages (6, 8) are alternately isolated by valves (12) thereby trapping a portion of the fluid. Measurements made at a measuring ... | 08/31/1993 |
| 5239863 | Cantilever stylus for use in an atomic force microscope and method of making same An atomic force microscope for observing a sample surface (7) is internally provided with a cantilever stylus (1, 14, 23) and makes use of atomic forces acting between the cantilever stylus (1, 14, 23) and the sample surface. The cantilever stylus (1, 14,... | 08/31/1993 |
