An automatic fire detection system characterized by an extremely low incidence of false alarms utilizes two detection channels, one fed by an infrared (IR) detector and the other by an ultraviolet (UV) detector. Signal processing electronics in each channel produce a normalized output signal proportional to the power of incident IR and UV radiation within specific bandwidths. The system features a...

A system of navigation for vehicles is proposed, which is provided with a device (14) for representing a road map as well as with a composite navigation apparatus (10, 11, 12) for the continuous instantaneous determination of the location of the vehicle and with a location display (16) on the representation of the road map. Deviations of the location from the course of the roads on the road map ar...

The utility model discloses an adsorption storage battery, belonging to a lead acid storage battery. The adsorption storage battery is characterized in that an adsorption layer is filled between the shell body and the pole plate of the storage battery, and electrolytes is immersed in the adsorption layer. The adsorption storage battery overcomeds the advantage that the electrolytes of the existing...

The utility model relates to a continuously collecting tube which is suitable to a whole-glass vacuum tube solar energy thermal arrester whose fluid (such as water or oil, etc) is arranged in a glass tube. The essential technical proposal is that the length of the fluid inlet tube of the rectangle case-shaped continuously collecting tube extended into the continuously collecting tube is reduced to...

In the device for evaluating test strips having individual test sections, which consist of a terminal, a work platform with holder for the test strips and a sensing head, a position mark 5 is arranged for each test section 9 on the side of the holder 13. On the work platform 15, the sensing head 14 is arranged so as to be capable of of traversing the test sections 9 and the position marks 5. The s...

This invention is a solution or dispersion of a liquid crystalline polymer characterized by having a polymer backbone to which are attached a plurality of pendant liquid crystalline moieties in an active hydrogen-containing compound having at least two active hydrogen-containing moieties. In another aspect, this invention is a polyurethane and/or polyurea polymer prepared by reacting a polyisocyan...

A process for producing a tire reinforcement is characterized by the fact that each reinforcement cord is projected individually into its place in the reinforcement. For this purpose, a machine is used which comprises laying members comprising essentially a rotary conduit which projects the cord by a radially outer extremity of the conduit and rollers which impose a linear speed of laying of the c...

Dimensionally stable, cured phenolic foams are described that have a thermal conductivity after 10-days below 0.0185 watts/m DEG C, a density of 30 to 70 k/cubic meter and a closed-cell content of at least 85%.

Partially cured phenolic foams having a cell structure that is resistant to rupture under pressure and a slow deterioration of thermal insulation value are described. These foams can be cured to achieve dimensional stability without substantial adverse affect on their structure.

The invention disclosed herein relates to a method for the preparation of finely dispersed polyurethane ureas. The method comprises the steps of first preparing a chain extended polyurethane from at least one diisocyanate, at least one polydiol, and diol chain extenders. The chain-extender component of the reaction is comprised of low molecular weight diols having side chains or ether groups, unbr...

PURPOSE:To improve the efficiency of a bonding operation and to correct a bonding position with a small error even for the logical circuit substrate having a distorted circuit pattern by a method wherein, besides the semiconductor chip at both end parts of the logical circuit substrate, the position of bonding pad of the semiconductor chip located inside the above-mentioned two end parts are also ...

A cooler for gases generated from coal by gasification under pressure has a pressurized vessel (1) that accommodates an insert (5) with a polygonal cross-section made out of pipes (6) that are welded together gas-tight in conjunction with webs (7). The pipes in the insert are bent vertically in to create a roof (11) and parallel one another sector by sector with webs of uniform width. The pipes th...

A printed circuit board is made of poly(arylene sulfide) board and a conductive metal deposited on the board by electroless plating. Adhesion between the poly(arylene sulfide) and the conductive metal is improved by allowing the plated poly(arylene sulfide) to age.

A measuring device for long-term installation in a bore in a rock formation for detecting gradual changes in bore diameter, especially gradual constriction which might affect the condition of radioactive waste deposited in the bore, utilizes telescoping parts under outward spring pressure. One of the two elements of the transducer which by the relative displacement of these elements measures chang...

An oil-in-water emulsion of at least one polymer selected from the group consisting of (A) an ethylene-alpha-olefin random copolymer having (l) an ethylene content of 30 to 70 mole%, (2) a number average molecular weight (Mn) of 500 to l0,000, and (3) a weight average molecular weight (Mw) to number average molecular weight (Mn) ratio (Q=Mw/Mn), of 3 at most, and (4) being liquid at or...

A steam expanded alkenyl aromatic polymer composition (10) is provided. The polymer is mixed with a volatile blowing agent containing, as a primary blowing agent, dichlorodifluoromethane and as a secondary blowing agent, a halogenated hydrocarbon, a hydrocarbon, or an aliphatic alcohol containing from 1 to 4 carbon atoms. The secondary blowing agent has a normal atmospheric boiling point of from 0...

The invention relates to the preparation of low-viscosity aqueous dispersions of glycerol esters of long-chain fatty acids by dispersing under mechanical agitation in the aqueous phase, wherein the starting material is constituted by soap-free glycerol esters having a content of less than 2% by weight of free glycerol esters, a content is set of 0.5-6% by weight of alkali soaps of long-chain fatty...

A foamed article of a chlorinated vinyl chloride resin containing an inorganic material which has not less than 70 % of dimensional retention when the article is heated at 200 DEG C for one hour and not less than 5 times of expansion ratio, and a process for preparing thereof which comprises the steps of preparing a foamable composition by kneading a mixture comprising a chlorinated vinyl resin, a...