The invention relates to the detection of the tracking error of a track using a process of periodic excursion of a reading beam in a direction which forms an angle with the direction of exploration of the track. The detection system comprises a mirror deflection by a bar vibrating in a flexural mode which is clamped to a base. Two plates of piezoelectric elements mechanically coupled with said vib...

A device for cutting successive sheets from a traveling web includes a pair of thin-walled knife-carrying cutting cylinders concentrically mounted over fixed supporting shafts. To prevent ringing of the shafts at high cutting frequencies, due to resonant frequency interference, each support shaft is formed by a body having an inperforate cylindrical wall. The cylindrical wall of the support shaft ...

Low adherency wound dressings consist of a wound facing layer and an absorbent layer, the wound facing layer comprising a conformable apertured film and the absorbent layer comprising a conformable hydrophilic foam; materials therefor and processes of manufacture thereof are described.

1. A storage battery comprising a spacer member for dimensionally stable electrode plates, the electrode plates being spaced by at least 5 mm, characterised in (a) that the spacer member (1) is an electrically insulating sheet (2) having projections (3) provided therein beneath one another at predetermined distances (a), the lateral extension (b) of said projections corresponding to the distances ...

Insufficient finish level on a yarn may be detected by monitoring the temperature of a stationary surface over which the yarn runs and observing a rise in temperature above that seen when a normal fixed level of finish is present on the yarn.

Metal flake is formed by charging metal particles, liquid and milling material to a ball mill. Metal flake formed, liquid and milling material are removed from the mill at a rate commensurate with the charging rate. The flake is then separated from the milling material.

PURPOSE:To provide failure flags as a part of the user's program, by detecting failures in a device and arbitrarily setting the inhibiting state of a controlling object. CONSTITUTION:A CPU5 executes a control operation as an instruction executing means and an input and output revise emans and various OS processing mentioned later, and a memory 6 being an RAM is used as a working memory. As a failu...

Polyurethane foams prepared with halogenated phosphoric acid flame retardant have low scorch and surface discoloration when prepared in the presence of a composition containing phenothiazine, 4,4'-thio-bis-(6-tertiary butyl meta cresol), and organophosphite.

A process for converting moist carbonaceous materials into an aqueous slurry suitable for pipeline transport and subsequent combustion in furnace burners such as power boilers and the like. In accordance with the process, a moist carbonaceous feed material such as peat, brown coal, lignite, subbituminous coal, waste agricultural cellulosic materials and the like is subjected to an autoclaving trea...

A device for detecting unacceptable defects in a neck area of hollow glass articles transported by a feeding element has a light source spaced from a path of feeding of the articles and arranged to illuminate the neck area of the latter, a projecting element arranged to project an image of the neck area of each of the glass articles, an image receiving element arranged to receive the projected ima...

An apparatus and method for identifying and removing arteriosclerotic plaque deposits from blood vessels. The apparatus comprises a catheter (6) having an optical fiber (18) for transmitting laser irradiation and an ultrasonic transducer (12) mounted at the tip of the catheter for transmitting and receiving ultrasonic signals. The apparatus further comprises a transmitting unit (7) for generating ...

The present invention relates to polystyrylpyridine-type resins having increased toughness, and composite materials containing these resins. The resin of the invention contains a polycondensation product of at least two reactive methylated substituents, the said resin having the following general formula (I): Ux Vy Wz in which: U denotes the grouping V denotes the grouping

A process for making oriented film of perfluorinated polymer which is either an ion exchange polymer or a melt-fabricable precursor thereto, which has been extended in the range of about 1.3X to 3X in at least one planar direction, is disclosed. Such film is made by swelling a film in melt-fabricable form in a liquid organic compound and either restraining it while drying, or stretching it followe...

The object of the present invention are new thermoset resins having quickened curing, a process for their preparation, and their applications. The resins according to the invention consist, at least in part, of the products resulting from the polycondensation of one or more pyridine derivatives containing at least two methyl groups in the 2, 4 or 6 positions, with one or more aromatic dialdehydes,...

The invention relates to a method and a plant for reducing oxide-containing material while simultaneously generating a gas suitable as fuel gas. In this regard, there is produced from carbonaceous and/or hydrocarbon material a reduction gas containing mainly carbon monoxide and hydrogen gas, using thermal energy obtained by partial combustion in a separate gas generating shaft. The temperature of ...