Abstract: A bicycle includes a speed-increasing mechanism interposed between the driving sprocket and the driven sprocket. The speed-increasing mechanism includes a small intermediate sprocket mounted rotatably on the frame of the bicycle, a first chain trained on the driving sprocket and the small intermediate sprocket, a large intermediate sprocket connected securely and coaxially to the small intermediate sprocket, and a second chain trained on the large intermediate sprocket and the driven sprocket. The radius of the small intermediate sprocket is smaller than that of the driving sprocket, while the radius of the large intermediate sprocket is greater than that of the driven sprocket.

Abstract: Catalysts for the epoxidation of ethylene in the vapor phase comprise silver impregnated support having thereon at least one cation promoter and oxyanion promoter comprising (i) sulfate anion, (ii) fluoride anion and (iii) oxyanion of an element of Group 3b to 6b, inclusive, of the Periodic Table, wherein the amount of fluoride anion is sufficient to reduce ethylene oxide burning.

Abstract: A lamp socket switch power line fastening structure, comprising a top cover attached to a lamp socket through sliding joint, wherein the lamp socket has a groove at the top divided into two branch grooves by a raised, pointed strip, two notches on said two branch grooves, and two curved, conductive strip springs respectively fastened in the two notches and having each one end connected to either terminal contact of the switch therein and an opposite end turned into either branch groove to stop at a terminal end. Inserting a two-wire power line into the groove on the lamp socket causes the two conductors of the two-wire power line to be separated by the raised, pointed strip and moved into the two branch grooves to further become respectively connected to and retained by the two curved, conductive strip springs.

Abstract: A novel praseodymium-palladium oxide compound has the formula Pr.sub.4 PdO.sub.7. The compound has utility as a catalyst for oxidation of combustion mixtures comprising oxygen (e.g., air) and gaseous carbonaceous fuels such as methane and displays excellent regeneration characteristics after exposure to decomposition-causing temperatures. The compound may be used in a catalyst composition by being coated as a washcoat on a suitable carrier. Catalytic combustion processes are carried out by contacting such combustion mixture with the catalyst under combustion conditions, including catalytically supported thermal combustion. Regeneration of over-temperatured catalyst is also provided for.

Abstract: Nitrogenous compounds especially bases such as amines are used to control the operation of a hydrocracker. Catalyst activity and selectivity may be controlled by addition of the base to the feed, for example, to control the balance between isomerization and conversion in an operation using a zeolite beta catalyst. Runaway conditions may be controlled by the addition of nitrogenous compounds and if they are added at intermediate points along the length of the reactor, the temperature profile within the reactor can be effectively regulated.

Abstract: A process for preparing an improved expanded porous polytetrafluorethylene product having a higher density and improved cold flow properties and prepared from a paste formed from a polytetrafluoroethylene resin and a lubricant. The method includes extruding the paste through an extrusion die at a reduction ratio of less than 100, calendering the extrudate, removing the lubricant, and heating the extrudate to a temperature greater than the crystalline melting point of polytetrafluoroethylene but generally below the temperature at which thermal decomposition becomes appreciable while concurrently expanding the extrudate to at least twice its original length.

Abstract: A lightly operable fully automatic umbrella comprising a hollow shank having a reduced neck at intermediate portion to divide it into an upper section having upper and lower apertures and a lower section having upper and lower holes, a longitudinal guide groove at the upper section and a middle ring provided at a location having a distance from the top end, the guide groove having a through hole communicating with the interior of the shank; a cylinder mounted around the shank at the end section above the middle ring for receiving an umbrella opening spring therein, and provided with an upper ring at outer lower end; a slidable sleeve mounted around the shank at the upper section, having upper and lower pawls, and provided with a lower ring at outer upper end, including an inner sleeve having a slot; an inner shaft inserted in the lower section of the shank, having upper and lower holes, including an umbrella closing spring received in a space between the top end thereof and the reduced neck, a wire and a slid

Abstract: A combined and fixed necktie having a necktie body, a sheath member, an adjusting plate, a neck rope and a neck rope retainer. The adjusting plate can adjust and fix the length of the necktie body which is inserted into rectangular apertures of the adjusting plate. The twined necktie body and adjusting plate can be fixed in the sheath member. The rope retainer being fixed in the sheath member can control the diameter of the neck rope so that is is very convenient and easy for the wearer to wear or remove the necktie.

Abstract: A metallic toner fluid composition that contains (A) electrostatically charged, colloidal elemental metal particles dispersed in an electrically nonconductive organic carrier liquid having a dielectric constant less than about 3.5 and a volume resistivity greater than about 10.sup.12 ohm-cm, (B) a soluble surfactant in an amount sufficient to charge and stabilize the colloidal metal dispersion, and (C) an effective amount of organosol particles and/or a soluble polymer that is not a soluble surfactant (B). Also disclosed is a substrate coated with elemental metallic toner fluid particles. The coated substrate can act as a donor substrate for thermal mass transfer of images to a secondary receiving substrate by performing either or both of the following steps, in any order:(a) transferring the elemental metal coating from the primary substrate to the secondary receiving substrate;(b) contacting the elemental metal coated primary or secondary substrate with an electroless metal plating solution.

Abstract: New contact lens cleaning materials are designed for use in cleaning fluorine and silicon containing hard contact lenses. The contact lens cleaning materials are water based and contain an alkylphenyl polyether alcohol surfactant and an anionic second surfactant selected to have good cleaning action with respect to protein and mucous-like material deposits.

Abstract: A method of making a dielectric isolation integrated circuit structure in which dielectric material grooves formed by ion implantation extend down into the structure and intersect a PN junction or other active region at intersection lines such that each intersection line is within microns both laterally from the center of the groove and vertically from the bottom of the groove and the grooves continuously curve at least at the intersection lines at a radius of curvature less than 1 cm.

Abstract: Filled thermoplastic molding composition containing a polycarbonate, a polyester, an olefin/carbon monoxide copolymer, a grafted core-shell elastomer, and a talc filler.

Abstract: A hardware device containing a first permanent key and a second key is plugged in a specified port of a computer to establish a communication path between the hardware device and computer. The first and second keys are presented with an access sequence from the computer in the software which is desired to be controlled generating outputs which are applied to an algorithm decoder which provides a control key which is used to protect the software from unauthorized use. The control key is the resultant of the algorithm decoder and the first and second keys. One of the keys is supplied with the hardware under the control of the developer whereas the second key may be supplied with the hardware device but is not restricted to the hardware device and may be entered through a separate port of the computer. The algorithm decoder can be included in any part of the software, the computer hardware or any combination thereof.

Abstract: A method of automatically generating new knowledge bases comprising:automatically planning satistically designed experiment on selected control variables;executing the designed experiment;analyzing the experimental results to acquire knowledge bases; andcoding the thus-acquired knowledge bases in computer-usable form.

Abstract: Moist, warm, clean air from a vapor treatment system is injected into wells which are screened only at the contaminated depth forcing vapor flow only through the contaminated region. Intermediate the injection wells is an extraction well which is also screened only at the contaminated depth. A vacuum is drawn on the extraction well drawing the flushing vapors from the injection wells and toward the extraction well through the contaminated soil thereby entraining some of the contaminants. The contaminants are preferably non-volatile hydrocarbons such as diesel fuel, aviation and jet fuel, crude oil or pesticides. The contaminated, flushing vapor is then treated and recycled. An MW/RF heating system heats the earth's surface and the contaminated soil, thereby enhancing volatilization of the contaminants and their removal via the vapor flushing system.

Abstract: The tri-state dual-in-line package (DIP) switch includes a base with a plurality of transverse grooves, a plurality of conducting pins attached to the transverse grooves; a plurality of slide members, each having a top protrusion and one conducting element attached to the rear surface; and a cover having a plurality of openings for the top protrusions of the slide members. The base is tightly sealed to the cover by means of high frequency welding, wherein energy directors provided for in at least one of the base or said cover are melted by allowing high frequency current to pass through the cover to the base. The width of the base is wider than that of prior art and the conducting pins are folded twice to maintain a standard distance.

Abstract: Blends of a major portion of ethylene vinyl alcohol copolymer (EVOH) and a minor portion of an amorphous polyamide and preferably also a semicrystalline nylon are disclosed. These blends may be formed into films or multilayer structures, which can be thermoformed into containers or other articles. The presence of the minor portion of amorphous polyamide permits thermoforming of the EVOH at lower temperatures without the formation of defects.

Abstract: An instant cooling can, comprising an inner container received inside an outer container for containing beverage or foods. An instant cooling media is received inside a vacuum space between the outer container and the inner container. A ball is fastened in the neck portion of the can to seal the vacuum space. The ball is removed from its position permitting outside air to flow into the vacuum space to cause the instant cooling media to generate cooling gas for mixing with the beverage or foods contained inside the inner container so as to instantly drop the temperature of the beverage or foods.

Abstract: A canned beverage fixture attachable to the interior of an automobile; a handle portion of the fixture can be inserted in the gap between car window glass and the window frame, or it may be looped around the locking pin of the car door. The fixture comprises a fixing ring connected with a handle portion by means of a hanging belt. The lower edge of the fixing ring is formed into a barbed ring portion that facilitates insertional movement of the fixing ring around the top edge (rim) of the canned beverage.