Abstract: A brake element is sensorized by at least one piezoceramic sensor arranged between a metallic support element and a block of friction material of a brake element, the sensor being completely embedded within the block. An electrical voltage signal generated by at least one piezoceramic sensor, without the need for a power supply, is picked up by an electrical circuit integrated into the metallic support element. The electrical voltage signal is processed in the form of equal length of samples per unit of time of the detected signal by successively processing in real time each sample of equal length of time sample of the signal by applying an algorithm. The algorithm is selected from at least one of a sequence of integrations of voltage values in the sample carried out in an interval of time in the order of milliseconds; FFT voltage data sample; and integral of the voltage data sample.

Abstract: A method in which at least one piezoceramic sensor, which converts every mechanical force to which it is subjected into an electrical signal and having a Curie temperature higher than 200° C., is solidarized directly onto the surface of a metal support element of a vehicle braking element, which during use faces a vehicle element to be braked. While in contact with such a surface, an electrical circuit is implemented that picks up and eventually processes the electrical signal, the electrical circuit being connected with a connector integrated with the metal support element. An electrically insulating layer sandwiches the at least one piezoceramic sensor and the electrical circuit, and a block of friction material with an underlying damping layer is formed upon the electrically insulating layer. After forming the block of friction material, the piezoceramic sensor is polarized by applying a predetermined potential difference thereto by means of the connector.

Abstract: Method for the electroless metallizing of fibrous materials, consisting of coating such fibrous materials, before subjecting them to a chemical metallizing treatment, with a uniform film of a polymer which is capable of adhering to the fibrous material, is resistant to the chemical metallizing treatment, and is suitable for receiving metal coatings.

Abstract: A new class of hydrosoluble monoazoic cationic dyes free of sulphonic or carboxylic groups and derived from 1-phenyl-3-aminopyrazoles is disclosed, as are, also, processes for preparing the new dyes and use thereof in the dyeing and printing of synthetic fibers.

Abstract: The present invention concerns a class of compounds useful as dispersed dyes and insoluble in water, having the general formula (I): ##STR1## wherein the symbols have the following meaning: R is selected from the group consisting of an alkyl group having up to 5 carbon atoms, a group --CH.sub.2 --COOX, wherein X stands for an alkyl group having up to 4 carbon atoms; a group ##STR2## and a group --CH.sub.2 --CH.sub.2 --CN; R.sub.1 represents an H atom, a halogen atom (preferably Cl or Br) and an NO.sub.2 group.The dyes of this invention, are particularly suited for the dyeing and printing of synthetic fibres, in particular of polyester fibres.The shades vary from yellow-green to orange. They possess an excellent affinity as well as an excellent fastness to light both in the deep tones as well as in the bright tones.Good fastnesses are also found against sublimation, to solvents and to washing.

Abstract: This invention relates to a class of water-soluble acid azo dyes, containing at least a sulphonic group, having formula (I): ##STR1## wherein the symbols have the following meanings: A is a residue of a diazotizable aromatic or heterocyclic amine, optionally substituted;R is selected from the group consisting of H, CH.sub.3, OCH.sub.3 and OC.sub.2 H.sub.5 ;R.sub.1 is selected from the group consisting of CH.sub.3 and C.sub.2 H.sub.5 ;R.sub.2 is selected from the group consisting of CH.sub.3 and C.sub.2 H.sub.5.The dyes which are the object of the present invention exhibit shades varying from yellow to blue and are useful for dyeing and printing natural polyamide fibres (wool and silk) and synthetic fibres (nylon). They possess an excellent affinity in both an acid bath and a neutral bath and an excellent tinting power. The dyes obtained are characterized by a remarkable purity of shade, by an excellent stability to sunlight, to washing and to sweat, as well as by a good equalizing power on nylon.

Abstract: Hydrosoluble, cationic, azo dyes of the formula: ##SPC1##Wherein:R is an alkyl or aralkyl group;R' is an alkyl group having from 1 to 4 carbon atoms;R" is H, an alkyl group having from 1 to 4 carbon atoms or a halogen;R'" is an alkyl group having from 1 to 4 carbon atoms or a C.sub.1 -C.sub.4 alkyl group substituted by a halogen, cyano, hydroxy, alkoxy or acyloxy group;Y is a cyano, amido, acyloxy or carboalkoxy group; andX is an anion, are obtained by:A. diazotizing a 2-amino-6-alkoxybenzothiazole of the formula (II): ##SPC2##b. coupling the resultant diazo compound in an acid solution with a tertiary amine of the formula (III): ##SPC3##wherein R', R", R'" and Y are as defined above; andC. quaternizing the resultant dye.