Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5378398 | Method of treating europium activated strontium tetraborate phosphor Europium activated strontium tetraborate phosphor is reacted with strontium carbonate or strontium fluoride or ammonium fluoride in order to improve emission characteristics.... | 01/03/1995 |
| 5273726 | Removal of aluminum from ammonium molybdate solution Aluminum is removed from ammonium molybdate solution by the use of Mg+2 in the solution to precipitate out the aluminum.... | 12/28/1993 |
| 5231123 | Basing cement A basing cement comprises, in weight percent, 80 to 85 filler material of limestone and lithopone, and 15 to 20 of binder resins including at least 6 weight percent of araucaria resin.... | 07/27/1993 |
| 5212763 | Electric fluid heater with infrared hot spot sensor A forced gas electric heater has a serpentine heating element disposed within a cylindrical glass tube. Infrared radiation emanating from the heating element enters the glass tube whereby part of the infrared radiation is directed within the wall of the g... | 05/18/1993 |
| 5196229 | Coated phosphor articles Phosphor particles are coated with a continuous, non-particulate, conformal coating of a metal oxide by suspending the phosphor particles in a gel solution containing a metal alkoxide. The gel suspension is then gelled after which the gelled suspension is... | 03/23/1993 |
| 5191605 | Telephone surge protector A telephone protector comprises an encapsulated bidirectional voltage sensitive switch having three terminals protruding therefrom, one of the terminals being a grounding terminal. There is an elongated shorting bar substantially orthogonal to the three t... | 03/02/1993 |
| 5178808 | End seal manufacture for ceramic arc tubes An end plug for an arc tube for a high pressure discharge lamp is made by pressing alumina powder in a tapered cylindrical die so that the diameter of the as-pressed plug is greatest at that part of the plug that has the lowest as-pressed density. The var... | 01/12/1993 |
| 5164171 | Removal of carbonate from caustic sulfide solution In the manufacture of ammonium paratungstate, sulfide is added to a tungsten-containing solution in order to precipitate molybdenum sulfide. Volatiles, including sulfides, evolved during this process are collected in a caustic scrubbing solution. The sulf... | 11/17/1992 |
| 5153910 | Protected telephone network interface device A telephone network interface device comprises a base structure, a protector assembly disposed within the base structure and a cover on the base structure. The device also includes a telephone jack and terminals to which a telephone subscriber's wiring ca... | 10/06/1992 |
| 5146199 | Circuit breaker having crimped metal cover An electrical circuit breaker has an insulative rigid base on which a circuit breaker assembly is mounted. The base has two long sides with grooves extending the full lengths thereof. A metal cover is crimped onto the base at and along the full lengths of... | 09/08/1992 |
| 5137665 | Process for densification of titanium diboride In a process for producing a high density article of titanium diboride, a titanium diboride powder mixture is formed into a compact shape, and then sintered according to a two step sintering process with one step being at a low furnace pressure to close t... | 08/11/1992 |
| 5134684 | Electric air or gas heater utilizing a plurality or serpentine heating elements An electric air or gas heater includes a plurality of equal diameter elongated linear serpentine resistive wire heating elements circularly arranged in parallel about a common axis and disposed within a cylindrical chamber having separable air or gas entr... | 07/28/1992 |
| 5126104 | Method of making powder for thermal spray application A method is disclosed for preparing an intimate mixture of powders of nickel-chromium-boron-silicon alloy, molybdenum metal powder, and Cr3 C2 /NiCr alloy suitable for thermal spray coatings which comprises milling a starting mixture... | 06/30/1992 |
| 5124091 | Process for producing fine powders by hot substrate microatomization A process for producing fine powder, which includes entraining a starting powder material in a carrier gas, injecting the starting powder material using the carrier gas into a high temperature jet to form a high velocity stream of molten droplets, fragmen... | 06/23/1992 |
| 5121026 | Electrode for ignition plug The center electrode of an ignition plug is a unitary cylindrical tungsten rod in which the outer peripheral portion thereof has a higher work function than the core portion.... | 06/09/1992 |
| 5120250 | Electrode for ignition plug The center electrode of an ignition plug is a unitary cylindrical tungsten rod in which the outer peripheral portion thereof has a higher work function than the core portion.... | 06/09/1992 |
| 5112524 | Unactivated yttrium tantalate phosphor An unactivated yttrium tantalate phosphor, M'YTaO4, contains one or more additives of Sr, Rb and Al in order to improve brightness under X-radiation.... | 05/12/1992 |
| 5111527 | Electric heater with thermistor temperature control A forced gas electric heater has a serpentine heating element in series with a preheat coil. Gas to be heated first flows through the preheat coil before flowing through the serpentine heating element. A thermistor is disposed between two adjacent turns o... | 05/05/1992 |
| 5102347 | Insulation displacement terminal for telecommunication devices An insulation displacement terminal comprises a clamp having an internally threaded tubular portion to accommodate a screw. An insulated telephone wire can be inserted into an aperture in the clamp. When the screw is screwed all the way into the clamp, a ... | 04/07/1992 |
| 5102454 | Hydrometallurgical process for producing irregular shaped powders with readily oxidizable alloying elements Composite powders containing a first group of metals of iron, cobalt, nickel and molybdenum in specific ratios and one or more oxidizable metals can be formed by forming an aqueous solution containing first group of metals, forming solid material of the m... | 04/07/1992 |
| 5103202 | Ambient compensated circuit breaker An electrical circuit breaker comprises a metal base having a raised step to which an elongated compensator bimetal is welded. A metal cover is secured to the base but is insulated therefrom. An elongated armature bimetal is welded to a step in the metal ... | 04/07/1992 |
| 5095759 | Platinum electrode bonded to ceramic A high gold content brazing alloy containing titanium is used to braze a platinum electrode to a ceramic cylinder.... | 03/17/1992 |
| 5087416 | Brazing alloy of copper, silicon, titanium, aluminum A brazing alloy for brazing ceramics has the following composition, in weight percent: 1 to 4 silicon; 1 to 5 titanium; 0.5 to 6 aluminum; 89 to 96 copper.... | 02/11/1992 |
| 5082637 | Removal of potassium from ammonium molybdate Potassium impurity is removed from ammonium molybdate by dissolving the ammonium molybdate in hot acid, allowing the acid solution to cool whereby the ammonium molybdate precipitates out of the solution as molybdenum trioxide and then separating, washing ... | 01/21/1992 |
| 5043229 | Brazed ceramic-metal composite A composite consists of a ceramic brazed to another ceramic by means of a joint layer therebetween. The joint layer comprises a porous metal interlayer and an active brazing filler metal penetrating through the porous metal interlayer.... | 08/27/1991 |
| 5035201 | Evaporating boat having parallel inclined cavities A self-resistance-heated electrically-conductive refractory evaporating boat has inclined cavities on its two horizontal surfaces, the cavities being parallel to each other.... | 07/30/1991 |
| 5031067 | Five pin protector module for telephone circuits A five pin protector module for telephone circuits comprises two input pins, two output pins and a grounding pin, all on an insulative base. The electrical current path between each input pin and its respective output pin comprises an electrically conduct... | 07/09/1991 |
| 5030598 | Silicon aluminum oxynitride material containing boron nitride A small amount of boron nitride is added to a mixture of silicon nitride, aluminum nitride and yttrium oxide, prior to sintering, to increase modulus of rupture and/or elastic modulus of the sintered material.... | 07/09/1991 |
| 5030386 | BaTiO3 ceramic temperature sensor with improved positive temperature coefficient of resistance Iron is used as a dopant in barium titanate semiconductor ceramic material to increase the positive temperature coefficient of resistance thereof. By the use of about 0.010 to 0.500 weight percent silica and about 0.0075 to 0.0190 weight percent iron, roo... | 07/09/1991 |
| 4990987 | Over-temperature sensor and protector for semiconductor devices Semiconductors can be damaged by overheating and to prevent such damage, the present invention utilizes a PTC thermistor which is in a heat sensing relationship with the semiconductor. Such thermistors demonstrate a sharp rise in resistance when the body ... | 02/05/1991 |
| 4983554 | Silicon nitride ceramic containing molybdenum disilicide A sintered silicon nitride ceramic having high stiffness consists of, in weight percent, 10.1 to 13.5 aluminum nitride, 6 to 7.5 yttrium oxide, 0.05 to 5 molybdenum disilicide, balance silicon nitride.... | 01/08/1991 |
| 4963178 | Apparatus for making quartz glass crucibles A flat-bottomed quartz glass crucible for the manufacture of monocrystalline silicon is made by disposing granular quartz particles on a flat base in a cylindrical mold. A vacuum is drawn on the particles through vacuum holes in the base to retain the par... | 10/16/1990 |
| 4958254 | Five pin protector module for telephone circuits A five pin protector module for telephone circuits comprises two input pins, two output pins and a grounding pin, all on an insulative base. The electrical current path between each input pin and its respective output pin comprises an electrically conduct... | 09/18/1990 |
| 4957236 | Method of brazing parts of Ti-Al-Nb alloy A brazing alloy-filler metal for brazing parts made of TiAlNb alloys has a brazing temperature of about 1020° to 1250° C. and a composition of, in weight percent, 37-75 titanium, 5-43 niobium, 20-58 nickel.... | 09/18/1990 |
| 4948527 | Method of making europium activated yttrium oxide phosphor A europium activated yttrium oxide phosphor is prepared as follows. Europium oxide is dissolved in nitric acid. Ammonium hydroxide is added to precipitate europium hydroxide, which is then dissolved in citric acid monohydrate to form europium citrate solu... | 08/14/1990 |
| 4938922 | Gold-nickel-titanium brazing alloy A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% pa... | 07/03/1990 |
| 4938890 | Method of making YTaO4 :Nb phosphor with improved brightness using lithium chloride-lithium sulfate eutectic flux A method of making a niobium activated yttrium tantalate x-ray phosphor using a lithium chloride-lithium sulfate eutectic flux is disclosed. The mole ratio of the flux is 46.5 mole percent lithium chloride to 53.5 mole percent lithium sulfate. Use of this... | 07/03/1990 |
| 4937414 | Wire guide for electrical discharge machining apparatus A wire guide for EDM machining apparatus comprises a vacuum hot pressed titanium diboride block having a groove on a curved side of the block for positioning EDM wire. The block has a mounting hole therethrough lined with an electrically insulating sleeve... | 06/26/1990 |
| 4924202 | Non-cycling electrical circuit breaker A circuit breaker comprises a compensator bimetal and a main bimetal which deflect in the same direction when heated. Each bimetal carries an electrical contact, which are normally in contact with each other. Upon overload, the contacts open. However, ope... | 05/08/1990 |
| 4922373 | Overtemperature protector for incandescent lamp An overtemperature protector for an incandescent lamp socket housing comprises a glass enclosed circuit breaker and an electrical heater in proximate heat transfer relationship therewith. The heater is in series with the circuit breaker so that when the c... | 05/01/1990 |
