Abstract: A method for manufacturing a micromechanical timepiece part starting from a silicon-based substrate, including, providing a silicon-based substrate, forming pores on the surface of at least one part of a surface of the silicon-based substrate of a depth of at least 10 ?m, preferably of at least 50 ?m, and more preferably of at least 100 ?m, the pores being designed in order to open out at the external surface of the micromechanical timepiece part. A micromechanical timepiece part including a silicon-based substrate which has, on the surface of at least one part of a surface of the silicon-based substrate, pores of a depth of at least 10 ?m, preferably of at least 50 ?m, and more preferably of at least 100 ?m, the pores being designed in order to open out at the external surface of the micromechanical timepiece part.

Abstract: A method of fabricating a micromechanical part in a single-piece made of a synthetic carbon-allotrope includes forming a substrate which includes the negative cavity for the micromechanical part to be fabricated, coating the negative cavity of the substrate with a layer of the synthetic carbon allotrope in a thickness of between 0.2 ?m and 20 ?m, the thickness being less than the depth of the negative cavity, removing from the substrate a larger thickness than the thickness of the deposited layer, so as to leave a limited thickness of the layer of material in the negative cavity, and removing the substrate so as to release the single-piece micromechanical part formed in the negative cavity comprising an external surface of comparable roughness to that of the substrate.

Abstract: A method for fabrication of a micromechanical part made of a one-piece synthetic carbon allotrope based material, the method including: forming a substrate with a negative cavity of the micromechanical part to be fabricated; coating the negative cavity of the substrate with a layer of the synthetic carbon allotrope based material in a smaller thickness than the depth of the negative cavity; and removing the substrate to release the one-piece micromechanical part formed in the negative cavity.

Abstract: The invention concerns a diamond coating characterized in that it includes at least one stack of a first nanocrystalline diamond layer and a second microcrystalline diamond layer.

Abstract: A powdery mineral filler comprising a calcium compound and a magnesium compound, comprising a semi-hydrated dolomite of general formula aCaCO3.bCa(OH)2.cMg(OH)2.dMg0.eCaO, a, b, c, d and e being molar fractions with (a+b+e)/(c+d) between 0.8 and 1.2, and comprising particle agglomerates, a flame-retardant polymer composition containing same, production methods and use of such mineral fillers.

Abstract: The invention relates to a one-piece metal component including an electroformed metal body, the external surface of the body including, only over or to a predetermined depth, less trapped hydrogen than the rest of the electroformed metal body causing a hardening relative to the rest of the body in order to improve the wear resistance of the one-piece component while preserving a relative magnetic permeability of less than 10 and the ability to be driven or pressed fit.

Abstract: The present invention concerns a fireproof composition consisting of reticulated polysiloxane and raw carbon nanotubes with a “bound rubber” value greater than or equal to 15 grams of carbon nanotube, said carbon nanotubes representing between 0.05 and 1% of the total weight of said composition.

Abstract: The process of obtaining a polylactide-urethane copolymer is described which includes contacting an ?, ? dihydroxyl polylactide prepolymer of general formula I wherein X is NH or O, R is an alkyl or an aryl group, n and n? are integer numbers which are substantially the same and are in the range from 20 to 140, with a diisocyanate compound of general formula II O?C?N—R?—N?C?O wherein R? is an alkyl or an aryl group and with an amine or an alcohol of general formula III R?X?]2 wherein R? is an alkyl or an aryl group and X? is NH2 or OH, and with the proviso that at least one of R or R? is an aryl group.

Abstract: An adjustable height device for aiding in the stretching of a sheet. The device may include a bracket for attaching the device to a bottom surface of a bed frame, a first connector attached to the bracket by a first rotating element so that the first connector can rotate about the first rotating element with respect to the bracket, a telescoping shaft attached to the first connector by a second rotating element so that the telescoping shaft is rotatable about the second rotating element with respect to the first connector, and a gripping device attached to the telescoping shaft by a second connector. The telescoping shaft may be made of an inner shaft slidably inserted into an outer shaft. The gripping device may include a base having a first gripping surface and a movable element having a second gripping surface rotatable about a rotational axis with respect to the base.

Abstract: An adjustable height device for aiding in the stretching of a sheet. The device may include a bracket for attaching the device to a bottom surface of a bed frame, a first connector attached to the bracket by a first rotating element so that the first connector can rotate about the first rotating element with respect to the bracket, a telescoping shaft attached to the first connector by a second rotating element so that the telescoping shaft is rotatable about the second rotating element with respect to the first connector, and a gripping device attached to the telescoping shaft by a second connector. The telescoping shaft may be made of an inner shaft slidably inserted into an outer shaft. The gripping device may include a base having a first gripping surface and a movable element having a second gripping surface rotatable about a rotational axis with respect to the base.

Abstract: The invention relates to an external part including a first portion based on photostructurable glass, at least one second portion based on at least one second material. According to the invention, one surface of the first portion is made integral with a surface of the second portion so as to form a one-piece external part.

Abstract: The invention relates to a timepiece component including a first part based on photostructurable glass and at least a second part based on at least one second material. According to the invention, one surface of the first part is made integral with a surface of the second part so as to form a one-piece timepiece component.

Abstract: A timepiece mechanism comprising including a pair of components with a first component including a material taken from a first group including solid monocrystalline, natural diamond, micro- or nano-crystalline CVD diamond, solid monocrystalline diamond, and amorphous carbon “DLC”, and having a first friction surface arranged to cooperate with a second friction surface included in a second opposing component and the second component includes, at least in its second friction surface, a material with a high concentration of boron, greater than 10 atomic percent, and, in a particular embodiment, this second opposing component includes at least one ceramic containing boron. Method for manufacturing such a mechanism. Method for transforming such a mechanism.

Abstract: Timepiece escapement mechanism with improved tribology, including a first component and a second component respectively including a first friction surface and a second friction surface arranged to cooperate in contact with each other, wherein the second friction surface includes at least one silicon-based material taken from a group including silicon, silicon dioxide, amorphous silicon, polycrystalline silicon, porous silicon, or a mixture of silicon and silicon oxide, and wherein the first friction surface is formed by the surface of a solid element which is made of solid silicon nitride in the stoichiometric formulation Si3N4.

Abstract: The invention relates to a timepiece assortment including a timepiece component fixed to an arbor with the aid of a fixing element. According to the invention, the fixing element is made of at least partially amorphous metal alloy, is secured to the timepiece component by partial insertion and includes a hole into which the arbor is driven.

Abstract: According to the invention, the marking device has a shape of revolution and comprises a casing (1) with a conical bottom (8) closed off by an obturator (2), fixed in a sealed manner to said casing (1). Inside said marking device there is a block (15) of compacted marking product.

Abstract: The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibers. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copolymers (PLA-grafted water-soluble polymers) for the compatibilization of PLA and water-soluble polymers. Such reactive compatibilization of immiscible polymer blends is achieved in such a way that main blend components are covalently bonded. In addition, such reactive compatibilization can be carried out by reactive extrusion.

Abstract: A mineral filler in a flame-retardant organic polymer composition comprising a calcium compound for a fire-resistant effect characterised in that said calcium compound comprises at least calcium hydroxide, use of same and the combustion residue obtained therefrom, and polymer sheaths for electrical cables containing the mineral filler in the flame-retardant polymer composition.

Abstract: A powdery mineral filler comprising a calcium compound and a magnesium compound, comprising a semi-hydrated dolomite of general formula aCaCO3.bCa(OH)2.cMg(OH)2.dMg0.eCaO, a, b, c, d and e being molar fractions with (a+b+e)/(c+d) between 0.8 and 1.2, and comprising particle agglomerates, a flame-retardant polymer composition containing same, production methods and use of such mineral fillers.

Abstract: A flame-retardant polymer composition comprising a mineral filler and a polymer, said mineral filler comprising a calcium compound, characterised in that the calcium compound is a fire-resistant additive in the form of calcium hydroxide, having a specific surface calculated according to the BET method greater than 25 m2/g, preferably greater than 30 m2/g, more preferably greater than 35 m2/g and advantageously greater than 40 m2/g, uses of same and the combustion residue obtained.