A tablet for pharmaceutical use able to release active substances at successive times, comprising at least: a first layer containing a portion of the active substance with suitable excipients, a barrier layer of polymer material gellable and/or soluble in water and/or aqueous liquids, which is interposed between said first layer and a third layer containing the remaining portion of active substanc...

An aqueous composition, comprising an aqueous dispersion of copolymer particles which have at least two mutually incompatible phases and where the particles have an average particle size of from about 20 to about 70 nanometers, is useful in treating or coating substrates.

Chewing gum compositions utilizing finely ground bulk sweeteners and methods of producing the compositions are disclosed. The gum compositions comprise 5% to 50% gum base, 0.5% to 3% flavor and 40% to 90% of a powdered bulk sweetener (preferably sucrose) wherein the powdered bulk sweetener has a particle size distribution such that at least about 60% of the powdered bulk sweetener passes through a...

Polymer composition consisting of: A. 5-90 % (wt) of one or more graft copolymers obtained by polymerizing 10-90 parts by weight of a monomer mixture consisting of 20-40 % (wt) acryl compound, 60-80 % (wt) vinylaromatic compound, and 0-20 % (wt) of one or more other unsaturated compounds, in the presence of 10-90 parts by weight rubber; B. 0-70 % (wt) of one or more copolymers obtained by po...

A fireproof, waterproof, and acidproof binder is characterized by a hardened composition of 10-90% by weight of alkali silicate comprising sodium waterglass, potassium waterglass or a mixture of the same, 1-40% by weight of reactive metal oxide from the group comprising magnesium, titanium, and zinc, preferably magnesium oxide, 1-70% by weight of calcium/magnesium carbonate, preferably dolomite, a...

A variable-frequency, variable-voltage (VVVF) converter is interposed in the line between an AC source and an asynchronous escalator motor. Current to the motor is sensed to determine load in conjunction with a passenger detector and load simulating electronic system and the frequency and voltage of the converter are automatically adjusted in response thereto to control escalator speed. The system...

In a method for checking and monitoring the friction between the traction sheave and the suspension ropes of an elevator, the slippage between the traction sheave and the suspension ropes of the elevator is measured, the elevator comprising an elevator machine, a hoistway and an elevator car and a counterweight moving in the hoistway. The rope slippage is measured either periodically by performing...

The electric light comprises a lamp and a reflector to which a translucent tube is connected radially with a translucent or reflecting film. An additional reflector fitted to the end of the tube to enclose a diffuser. The diffuser (8) consists of a slender body extending from one end of the tube (5) to the other and spaced right the way along from the film (6). Pref. the diffuser is a round rod, w...

A transponder arrangement is described comprising an interrogation unit (10) which sends an RF interrogation pulse to at least one responder unit (12). The responder unit (12) then transmits back data stored therein in the form of a modulated RF carrier to the interrogation unit (10). In the responder unit (12) is an energy accumulator (136) which stores the energy contained in the RF interrogatio...

Material (5) of constant thickness is absorbent. The bottom layer (6) is of impermeable material while the top player (16) is liquid-impermeable. The absorbent layer is subject to a heat source (7) and to pressure (8) to achieve the required adhesion. Pressure is applied by roller (9) rotating on a shaft (10) which is movable up and down w.r.t. the centre line (11). - Opposite this roller is a sec...

When during operation, the digitally controlled focusing (Hf) and positioning means (Hp) of the scanning system of a device for optically scanning a data carrier are excited intermittently via switching means (S1) it is achieved that the gain and offset errors in the scanning system can be derived adaptively from the response to the detection signal (d) by means of an excitation signal (d) of a de...

This invention utilizes a conventional meat skinning machine having a frame, an elongated skinning blade, a rotatable gripping roll closely positioned adjacent the blade, an electrical motor operatively connected to the gripping roll and to a source of electrical power, and a danger zone defined by the area approximate to the gripping roll closely adjacent the blade. The motor is a braking motor w...

Thick BN (boron nitride) coatings having a thickness of at least 0.4 microns protect fibres, increase their fracture toughness, and decrease chemical interaction between the fibres and the matrix into which they are to be incorporated. The boron nitride coating may be produced from the reactant gases boron tricloride and ammonia at a temperature of 1000-1300 DEG C using argon as a carrier gas. The...

An apparatus for registering the position of an optical scanning device is proposed, in which a lens (7) is provided, which has lens regions (7a, 7b, 7c, 7d) corresponding to four quadrants (I, II, III, IV) which are divided into two planes, each one of which has an optical axis (Z), these planes being perpendicular to one another. The focal lengths of the lens regions (7a, 7c) of the first quadra...

A sintered prod. made of apatite is given a porous surface by contacting iwth an acid buffer soln. which is free from phosphoric acid. Pref. the buffer soln. has a pH of 2.2-6.0 pref. 2.2-3.5 The apatite is chosen from hydroxyapatite, fluoroapatite and/or chloroapatite. The buffer solution is based on citric acid, hydrochloric acid and/or phthalic acid. USE/ADVANTAGE - Producing porous ceramic fil...

This system comprises a casing (1), it being possible for a series of mounting plates (2) to be inserted as desired in the casing and used for various functions, as well as a series of covering panels (3), that are fixed, as desired, over the mounting plates on the casing and which correspond to the functions of the mounting plates located under the panels, and the casing (1) includes an opening (...

A stretchable undergarment (26) comprises a liquid-pervious bodyside layer (4), liquid-impervious outer layer (10), an absorbent layer (8), and a stretchable layer (6). The stretchable layer (6) is stretch-bonded to the other layers and, upon relaxing the stretchable layer (6), forms a plurality of rugosities (14,19) in the bodyside layer (4), outer layer (10), and absorbent medium (8). The bonded...