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 |
| 4447541 | Methods for decontaminating soil A reagent mixture is admixed with soil to first desorb and then hydrolyze and thereby increase the biodegradability of a toxic or otherwise hazardous polyhalogenated organic compound with which the soil is contaminated. Essential constituents of the reage... | 05/08/1984 |
| 4419243 | Growth of biomass This invention provides a process and apparatus for the growth of biomass from a supply of suitable nutrient wherein the volume of biomass and the size and shape of the units in which it is present within a vessel (10) in which the reaction takes place ca... | 12/06/1983 |
| 4407839 | Dusting blend This invention relates to an improved dusting blend and the use of such a blend in a baking process. The improvement resides in the addition of salt to the dusting blend to retard insect infestation while at the same time retaining good flowability charac... | 10/04/1983 |
| 4376545 | Ski brake A ski brake, which is mounted on the ski and provided with two brake arms, one on each side of the ski, which brake arms by spring action can be turned to a catching position, in which the brake arms extend downward, substantially perpendicularly to the s... | 03/15/1983 |
| 4373325 | Combustors Combustors utilizable in a variety of sizes, configurations, and applications in which vortex induced centrifugal forces and hot gas recirculation are employed for flame stabilization. Both gas and liquid fuels can be burned, and low emission as well as o... | 02/15/1983 |
| 4370867 | Open top refrigerated display case with ambient air defrost An open top refrigerated display case having an ambient air defrost system and a method of operating such display case, at least one air conduit extends in a U-shaped formation along opposing side walls and a bottom wall of the refrigerated display case. ... | 02/01/1983 |
| 4367413 | Combined turbine and generator An electrical machine which can be run as a synchronous generator or as a pump is disclosed. The machine is a true hybrid of a turbine and synchronous generator in that the turbine blades are designed to carry magnetic flux. To that end the blades are mad... | 01/04/1983 |
| 4363815 | Alpha hydroxyacids, alpha ketoacids and their use in treating skin conditions Preventive as well as therapeutic treatment to alleviate the symptoms of skin disorders associated with disturbed keratinization or inflammation with one or more alpha or beta hydroxy-acids and alpha or beta ketoacids is disclosed. The alpha or beta hydro... | 12/14/1982 |
| 4363690 | Structural materials and components High density structural ("blocking") materials composed of a polyimide filled with glass microballoons and methods for making such materials. Structural components such as panels which have integral edgings and/or other parts made of the high density mate... | 12/14/1982 |
| 4363309 | Valve, particularly crossover passage valve A sealed butterfly-type valve for an exhaust gas passage in an engine intake mainfold, the valve having a rotatably mounted stem carrying a gas flow modifying valve element disposed in the passage, and sealing against escape of exhaust gases along the ste... | 12/14/1982 |
| 4363234 | Method and apparatus for forging sections A method and an apparatus, FIG. 1, for manufacturing sections (9,10,11), preferably for manufacturing beam preforms. The method is characterized in that a blank (7) with rectangular or square cross-section is forged between a pair of web tools (1,2), in that t... | 12/14/1982 |
| 4363202 | Apparatus for lining kilns, tunnels and the like A rig for lining with brick a kiln, tunnel or like surface embodies a frame that is of variable size to suit different surface diameters, and two relatively adjustable jacks support deformable arcuate brick column support members at each opposite sides of... | 12/14/1982 |
| 4361571 | 3-Carbamoyl-6-aminopyridinium and analogues, and their use in treating skin disorders Systemic as well as topical treatment to alleviate the symptoms of skin disorders characterized by inflammation or disturbed keratinization comprising as the principal active ingredient, one or more 3-carbamoyl-6-aminopyridinium compounds, is disclosed. I... | 11/30/1982 |
| 4361453 | Methods of preparing polyimides and artifacts composed thereof Methods of converting essentially unpolymerized precursors into polyimides in which the precursors are exposed to microwave radiation. Preheating, thermal post-curing, and other techniques may be employed to promote the development of optimum properties; ... | 11/30/1982 |
| 4354985 | Water wash humidifier assembly A humidifier assembly comprises a humidifier housing having an open bottom, a rear wall opening adapted to be aligned with an opening in ducting containing air to be humidified and a front wall opening over which is removably mounted a door. A removable w... | 10/19/1982 |
| 4347970 | Container closure A carton has a plurality of side panels each connected by a fold line to one of a series of end closure flaps, there being a major flap having two oppositely located and oppositely angularly related slots canted with respect to the fold line of that flap ... | 09/07/1982 |
| 4345396 | Visible indexes Spring loaded devices for spacing index strips and other components of a visible index with respect to a frame supporting those components and for removably attaching items to or holding them against the frame.... | 08/24/1982 |
| 4323843 | Magnetic contamination detector Apparatus is provided for detecting ferrous contamination in a fluid such as engine transmission lubricant. The apparatus has two spaced apart electrodes, a magnetic flux extending between the electrodes the lines of force of which are substantially recti... | 04/06/1982 |
| 4295568 | Pressure frame with bowed side members For palletized handling of goods a pressure frame is made from springy frame members of L-shaped section, which are all similarly tilted for two reasons: firstly to enable identical pressure frames to nest safely in storage and secondly to accommodate str... | 10/20/1981 |
| 4294495 | Boom sockets A boom socket in which the gooseneck assembly and cross pin are supported in rolling contact bearings and in which the construction and materials eliminate free play and minimize corrosion and otherwise reduce maintenance to a minimum.... | 10/13/1981 |
| 4290226 | Flexible flying disc toy A flexible flying disc toy having a flat, flexible body of fabric material, whereby an advertising message or the like may be printed thereon, and a shape defining and retaining, flexible peripheral ring and rim integrally formed of vinyl or the like so t... | 09/22/1981 |
| 4285339 | Electronic closed loop servomechanism and electronic scuba regulator therefor An electronic closed loop servomechanism for sensing a physical force such as ambient pressure and electronically powered means for performing useful work controlled by said servomechanism. The servomechanism may be used in a breathing gas system such as ... | 08/25/1981 |
| 4278847 | Transformerless hybrid circuits An electronic hybrid for coupling a two-wire line to a four-wire line and having a two-wire port adapted to be connected to the two-wire line, separate receive and transmit ports adapted to be connected to said four-wire line, means for coupling signals r... | 07/14/1981 |
| 4273833 | Anti-fouling overcoating composition and use thereof An anti-fouling overcoating composition for watercraft or stationary underwater structures precoated with hard-surface leaching-type anti-fouling paint consists essentially of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic copolym... | 06/16/1981 |
| 4271991 | Low pressure dispensing A low pressure container for dispensing a product, even products of high viscosity, namely about 10,000 cps. or higher, at pressures of only about 6-40 lbs. per sq. in. gauge (psig). The low pressure reduces the safety hazard to practically zero, reduces ... | 06/09/1981 |
| 4270774 | Method of making bingo or tombola tickets and article produced thereby Tombola or bingo tickets and booklets of tickets are manufactured in continuous strip form which is concertinaed or fan-folded at intervals of every six or twelve tickets; the strips form caters for the differing ticket or booklet requirements of differen... | 06/02/1981 |
| 4265739 | Flotation machines and components thereof Froth flotation apparatus with mechanical agitation and aeration. Impeliers and diffusers therefor which are more durable and less expensive than the state-of-the-art components.... | 05/05/1981 |
| 4264158 | Picture changer for large-scale picture projector A picture plate changer for changing pictures projected with a large scale picture projector, e.g., overhead type projectors projecting a single picture from an entire picture plate. A magazine stores the picture plates as a stack of flat plates or plexig... | 04/28/1981 |
| 4262800 | Sterilizable holder for fiber optic surgical unit or the like A sterilizable holder for a fiber optic surgical unit or similar delicate medical instrument including a base, an outline of the instrument formed on the base, pairs of retainer pegs located about the outline on the base and elastic bands engaging the peg... | 04/21/1981 |
| 4259093 | Electrostatic precipitator for air cleaning An electrostatic precipitator for air cleaning wherein the air passes through in two steps: first passing through a charging portion and next through a separation portion. The charging portion includes wires positioned parallel to and between parallel met... | 03/31/1981 |
| 4258430 | Information collection and storage system with removable memory An information collection and storage system and method wherein pulses representing sensed information are counted and wherein resulting pulse counts are written into a volatile random access memory which forms a part of a detachable battery powered memor... | 03/24/1981 |
| 4258052 | Treatment of psoriasis with nicotinamide analogues A treatment to alleviate the symptoms of psoriasis consisting of topical application of a cream, lotion, ointment or gel containing as the principal active ingredient one or more nicotinamide analogues is disclosed. The therapeutic composition may include... | 03/24/1981 |
| 4255488 | Polyimide fibers Polyimide fibers which have a porous, microcellular structure. Methods of making such fibers from a precursor under conditions which cause the precursor to foam and undergo imidization.... | 03/10/1981 |
| 4252639 | Coal beneficiation processes A method of beneficiating coal in which the coal is conditioned by agitating it in the presence of a dense halogenated hydrocarbon and a surface active agent to effect a transfer of surface water from the coal to mineral matter associated therewith and an... | 02/24/1981 |
| 4250427 | Dye laser flashlamp and method of making same A coaxial dye laser flashlamp, each electrode of which is made of spaced rings joined by several molybdenum strips evenly spaced about and between the coaxial quartz tubes of the flashlamp. The coaxial quartz tubes are then fused together in the regions o... | 02/10/1981 |
| 4244283 | Fruit and like transportation bins A bin for the transportation of citrus fruit comprises a rigid fabricated frame having a substantially continuous top rim and an integral shape retaining tub of molded synthetic plastic mounted within and attached to the frame with the upper edges of the ... | 01/13/1981 |
| 4241114 | Polyimides Polyimide foams derived from mixtures of aromatic diamines and partial esters of a benzophenonetetracarboxylic acid. The precursors are converted into polyimide foams by the application of heat; and the foams are then compressed, yielding dense, rigid, an... | 12/23/1980 |
| 4235971 | Inoculator An inoculator wherein a multiplicity of small volumes of an inoculum are picked up on pins depending from an inoculator head and deposited in separate areas according to a pattern, such as in the wells of a microtitration tray. The instrument includes a c... | 11/25/1980 |
| 4234769 | Electrical switch having a floating bridge member In an electrical switch including a housing and a button in which the button, by means of a manual depression thereof in a single direction is movable relative to the housing between two positions and during this movement causes a snap spring inserted in ... | 11/18/1980 |
| 4234530 | Method for the manufacture of thin-walled shaped articles of crystalline thermoplastic material A method for manufacturing thin-walled articles from crystalline thermoplastic material comprising the steps of extruding a continuous web of hot crystalline thermoplastic material at an extrusion temperature above the crystalline melting temperature rang... | 11/18/1980 |
