Abstract:
A measuring instrument for studying the tensile characteristics of hair or other fibre samples is provided with elements whereby it is possible successively to carry out measurements on a series of samples automatically without intervention by an operator. A stack of pairs of blocks (12A and 12B) is mounted in a loader (23) with a sample (21) connected between the blocks of each pair. The sample blocks are displaceable as a pair from the bottom of the loader across a plate to be engaged by relatively movable clamps (11 and 19) by means of which the sample carried between the blocks can be stretched. A dynamometer (5) measures the tension for a predetermined elongation and a sensor (54) cooperating with an anvil (25) senses changes in transverse dimensions of the sample.
Abstract:
A device for spraying at least one substance onto a medium, the device comprising a supply of vector gas and at least one substance feed member suitable for communicating with a supply of said substance, the substance being sucked from the supply by suction established in the vicinity of the substance feed member by means of the vector gas being emitted, wherein the vector gas is emitted through at least two gas outlet orifices whose respective positions are selected in such a manner that the vector gas jets emitted by said orifices meet one another.
Abstract:
A device for spraying at least one substance onto a medium includes a supply of vector gas, a substance feed in communication with a supply of the substance and at least one shutter which interrupts communication between the substance feed and the supply of substance. The substance can be sucked from the supply by suction established in the vicinity of the substance feed by emission of the vector gas. The vector gas is emitted from at least one gas outlet orifice located in the vicinity of the substance feed.
Abstract:
A device for packaging and dispensing a fluid, including a receptacle containing a shrinkable bag suitable for shrinking as the quantity of fluid contained inside it diminishes, the device also including extraction means opening out to the inside of the bag. Inside the bag, the device includes a free body whose buoyancy is selected so that it takes up a position close to the extraction means when the device is in use for dispensing a quantity of fluid, the shape and the dimensions of the body also being selected so as to prevent the bag from tearing as it shrinks.
Abstract:
Valve (3) for dispensing a product using a propellent gas, comprising a chamber (5) communicating with the product, in which chamber there is mounted a nozzle stem element (7) fitted with an ejection passageway (11a, 11b) placing the outside in communication with the chamber, the nozzle stem element being urged by a spring (13) towards a first position in which the passageway is closed; an additional gas intake orifice (14); a moving annular seal (15) arranged on the nozzle stem element and, in the position of rest, closing off the orifice and dividing the chamber into a first compartment (A) and a second compartment (B), the chamber and the nozzle stem element in a second position placing the orifice and the outside in communication for letting the gas out, the first and second compartments being separated, structure (C) for temporary communication being provided in the chamber, this structure being inoperative in the first and second positions and operative in a third position of the nozzle stem element to place the first and second compartments in communication.
Abstract:
An aerosol device for dispensing a composition with relatively high viscosity, in particular a gel or an emulsion, comprises a can intended to be used with the head upwards, containing the composition and a propellant agent acting directly on the composition. A dispensing valve is in the upper part of the can on an opening of this can, while a dip-tube connected to the valve extends as far as the vicinity of the bottom of the can. The composition (C) to be dispensed has a viscosity (measured on a Brookfield DV III viscometer, needle no. 7) lying in the range of 4000 to 10,000 millipascal.second, preferably of 6000 to 8000 millipascal.second, for a speed of 100 revolutions/minute and of 30,000 to 150,000 millipascal.second, preferably of 50,000 to 120,000 millipascal.second, for a speed of 2.5 revolutions/minute. The dip-tube is a semi-capillary tube (18) whose internal diameter (e) lies between 0.7 and 1.5 mm.