Fibrous polyolefin nonwoven sheets are bonded and stretched in a continuous, multiple stage process. First, the sheet is heated without significant stretching to a temperature that is close to, but below, the melting temperature of the polyolefin. Then, as the sheet is forwarded to a first stretching stage, the sheet temperature is decreased by 5 DEG to 40 DEG C. and thereafter the sheet is alte...

A valve actuator to open and close the intake and exhaust valves of an engine utilizing the electromagnetic force generated by an electromagnet. A reciprocally moving magnetic pole (8a) is coupled to an intake or exhaust valve (8), an upper fixed permanent magnetic pole (3) is provided to be opposed to an end in the reciprocating direction of the moving magnetic pole (8a), and the intake or exhaus...

An apparent gear ratio, namely G = NT/NO, is determined based on transmission input and output revolution speeds NT and NO which are detected by sensors. The apparent gear ratio is used to determine whether a shift operation is in progress or not. It is defined that the gear shift operation is in progress when the apparent gear ratio falls between one gear ratio before the shift operation and anot...

A valve actuator to open and close the intake and exhaust valves of an engine utilizing the electromagnetic force generated by an electromagnet. A reciprocally moving permanent magnet (4) is coupled to an intake or exhaust valve (7), a first electromagnet (3) is provided to be opposed to one end in the reciprocating direction of the moving permanent magnet (4), a second electromagnet (5) is provid...

PCT No. PCT/CH89/00172 Sec. 371 Date May 9, 1991 Sec. 102(e) Date May 9, 1991 PCT Filed Sep. 19, 1989 PCT Pub. No. WO91/04217 PCT Pub. Date Apr. 4, 1991.A device for joining a large number of threads on a single frame. Each of a plurality of thread clamps has a guide tube communicating with a vacuum duct. A carriage for carrying a thread joining system is arranged on the frame. As the carriage mov...

An apparatus for positioning the spool in the valve body and setting the armature air gap with respect to the core assembly of a compound, spool type valve driven electro-mechanically by a pair of face type opposing solenoids.

An obtd. paste is filled into an active material supporter. The weight of minium in the lead oxide (1) is specified to lie between 10% and 50% of the total weight of the lead powder. The lead powder can contain both a lead oxide (1) having a minium content of up to 90% and a lead oxide having a minium content of over 90%, and the amount of minium in the former is more than 80% of the total amount ...

Particulate expandable thermoplastic polymers containing a) at least one organic boron-silicon compound, b) at least one thermoplastic polymer and c) a foaming agent, process for producing them and the foamed materials made with the use of these expandable thermoplastic polymers.

A defined set of correction measures for defined subsystem faults is set up and stored in priority order. Subsystem operating parameters are detected and corresp. output signals processed in a data processor to detect faulty functions in at least one subsystem and to select a sequence of correction measures for the faulty functions. The correction measures are performed sequentially to modify the ...

An apparatus is provided for measuring the concentration of a substance in a sample solution. The apparatus comprises first electrode means (20, 22, 24), second electrode means (30, 32, 34) and an enzyme channel (14) between the first and second electrode means. The enzyme channel (14) contains an enzyme for catalysing a reaction of the substance whose concentration is to be measured. In use, a kn...

Symbols (y(n - L)) in a symbol sequence transmitted via a fading channel are estimated (S/< ANd >(n - L)) in an equalizer having a channel estimating filter (CEST). An error signal (e(n)) influences an adaptation circuit (10) which controls adjustable coefficients (7) so as to form a channel estimate (c1(n), c2(n), c3(n)), which is adapted during the whole of the symbol sequence. The adaptation ci...

In identifying and testing the location of unmasked areas on a semiconductor wafer (10), the surface of the wafer (10) is scanned with two laser beams (26,52). The power of each reflected beam is a function of the optical reflectivity of the surface of the wafer(10). The optical reflectivity of the unmasked areas is different from the masked areas. Power measurement of the reflected beams by photo...

Spray-stable and castable aqueous foams (S) produced by the mechanical foaming of suitable aqueous preparations (W), in which the aqueous phase contains (A) a curable polymer system consisting of (U) an ionomeric polyurethane or a mixture of ionomeric polyurethanes and possibly (P) one or more further polymers which are at leat curable with (U), and (B) at least one foam stabiliser, having a weigh...

A table memory (28) is provided for selecting types of files to be updated in accordance with identification codes designating types of transactions. When a transaction occurs, the corresponding transaction record and the identification code indicating the type of transaction are generated. Data from the table memory is retrieved in accordance with the identification code to select all the files t...

A data processing apparatus comprises input, file update, display and print processing units which are independently operated and linked to each other. Arbitrary word labels can independently be set in each processing unit. Each processing unit performs only an operation defined by the word labels. The data processed by one processing unit can be used as a source data based on which the succeeding...