A liquid crystal display device comprises two supporting plates which are kept spaced apart and the facing surfaces of which comprise a pattern of line electrodes and column electrodes, respectively, which form a matrix of display cells. A mixture of a nematic liquid crystal with a cholesteric addition is present between the supporting plates. The mixture has a positive dielectric anisotropy and a...

Pour assurer la régularité géométrique d'un pneumatique moulé avec un moule à segments, lorsque la sculpture dudit pneumatique comporte des blocs 11 entourés d'évidements constitués par des rainures 15 et des incisions 16, on amincit lesdites rainures 15 au niveau des plans de joints 550 entre segments. En outre, on dispose les témoins d'usure 17 au niveau des joints 550 entre segments.

Procédé pour corriger les variations de force radiale entre le pneumatique et le sol, consistant à mesurer sur une machine d'uniformité la variation de force radiale de l'ensemble roulant pneumatique 1 - jante de montage 20, à reconstituer une variation radiale à partir des variations harmoniques à corriger, à effectuer cette correction au moyen de cales 30, sous formes d'anneaux circulaires pl...

L'invention concerne un système à ordinateur de bord à affichage sélectionné d'une fonction parmi une pluralité de fonctions, appelée menu.

Le système est du type comprenant un dispositif d'affichage 2 qui comporte des moyens d'affichage du menu et des moyens d'affichage des données relatives à la fonction sélectionnée et un dispositif de commande 3 de l'affichage par l'intermédiaire dudi...

Mécanisme de canapé-lit comprenant un cadre de support d'un matelas M, ledit cadre étant repliable et escamotable en position repliée dans une caisse 1 définissant les contours du siège du canapé-lit, caractérisé en ce qu'il comporte un premier ensemble constituant le cadre proprement dit et formé par les premières parties 14, 23, 24, 34 de deux sous-ensembles articulés 6 reliées entre elles pa...

PCT No. PCT/FR89/00333 Sec. 371 Date Feb. 28, 1990 Sec. 102(e) Date Feb. 28, 1990 PCT Filed Jun. 27, 1989 PCT Pub. No. WO90/00215 PCT Pub. Date Jan. 11, 1990.The invention relates to a folding canopy like a sunshade, shelter for hiking, camping or similar, intended specially to provide protection for an area of ground against storms, sunshine or rain. The shelter (1) consists of a roof held up by ...

Method and apparatus for recording information on a card-shaped optical information recording medium with a light beam and/or for reproducing information recorded on the medium. The apparatus includes a device for irradiating the medium with a light beam, a device for causing relative reciprocal movement between the medium and the light beam, and a device for terminating or displacing the light be...

The invention relates to a dynamometric measuring device for drill pipe comprising, integral with the rotating pipe (1), sensors, (20, 40, 60, 70, 50) and a first electronic circuit (3) for the conditioning of signals provided by such sensors, characterized in that the electronic circuit (3) is integral with rotating parts (1), the sensor being arranged in a groove (10) and the measuring signals b...

La présente invention concerne un dispositif d'accès et d'asservissement à une piste d'un disque optique.

Ce dispositif comporte une tête optique 3 d'axe optique B orthogonal au plan du disque, au moins un circuit magnétique fixe comportant au moins un noyau 6 sécant à l'ensemble des tours de la piste et dont l'entrefer forme un plan sensiblement perpendiculaire au support, un premier dis...

The invention relates to a self-locking differential with epicycloid gear train including an input member 3a and two output members 5a, 4a, 25. It comprises securing means 27, 28 for rotationally securing two of the three input and output members by axial displacement of the input member, and thrust means 17a, 18a for giving rise to the said axial displacement of the input member on the occasion o...

Constructional component made of steel-reinforced wood concrete composed of an artificial agglomerate with 30 to 40% of treated wood chips, 20 to 30% of cement, 30% of water, in which a reinforcement is encased which is intended to withstand the forces due to loads. The low density of this material, 0.8 to 1.1, will provide amateurs and professionals with a constructional component of trapezoidal,...

PCT No. PCT/FR87/00286 Sec. 371 Date May 19, 1988 Sec. 102(e) Date May 19, 1988 PCT Filed Jul. 20, 1987 PCT Pub. No. WO88/00529 PCT Pub. Date Jan. 28, 1988.Ink jet printing head and replacement of bevel sticks in industrial tracers by an ink jet printing head provided with a set of deflection plates (3, 4, 5) so arranged and polarized that the electric field of deflection of droplets is orientable...

The artificial acetabulum 2 comprising grooves 2d which are arranged on its periphery and which make it possible, on the one hand, for the said acetabulum 2 to be cemented directly into the iliac bone or, on the other hand, for it to be snapped into a hollow hemispherical cup 3. ;

Le cotyle artificiel 2 comprenant des rainures 2d disposées sur sa périphérie et qui permettent d'une part d...

The invention relates to a product which is provided in a two-component form and intended for the restoration and protection of inorganic construction, facing or decoration materials. This product contains a first part comprising, on the one hand, a metal complex based on zinc oxide and, on the other hand, an inorganic material which is provided in the powder or granulate form. The inorganic mater...

L'invention se rapporte à la formation d'une masse réfractaire poreuse.

Un gaz oxydant est projeté contre une surface en même temps qu'un mélange pulvérulent qui comprend : des particules réfractaires, des particules de combustible réagissant de manière exothermique avec le gaz oxydant pour former un oxyde réfractaire et libérer suffisamment de chaleur pour fondre superficiellement les pa...

Apparatus for water treatment comprising a housing 1 containing a cartridge 4 filled with substance P ensuring the water treatment, a tubular filter 5 being introduced into the funnel 44 of the cartridge 4. Water to be treated is introduced through the feed conduit 35 into the upper part of the filter 5 where, on the one hand, it travels from the top downwards and passes through the filter 5 from ...

La présente invention concerne les têtes de prothèse.

La tête selon l'invention se caractérise par le fait qu'elle comporte une calotte sphérique 2 apte à coopérer en rotation dans un cotyle 3, une patte de fixation 4 apte à être implantée dans le canal médulaire d'un os 5 tel qu'un fémur, des moyens de liaison 6 de la calotte sphérique avec une extrémité 7 de la patte de fixation, ces mo...

It comprises a semi-spherical, hollow shell 1 whose outer wall is provided, on the one hand, in its polar region, with three spikes 4 oriented parallel to the polar radius of the shell 1 and, on the other hand, in its intermediate zone, with apertures 5 in which pins 6 engage by force, these pins being oriented in a different direction to that of the spikes 4, while the inside of this shell 1 comp...

This holder for an echography sensor in the echography of an infant's hip comprises a frame (4), a first assembly (9) movably mounted for vertical displacement and linked to driving means (10) for vertically moving said first assembly (9), operating means for said driving means, a second assembly (13) movably mounted for horizontal displacement on said first assembly (9), resilient return means (1...

A normal decoder and a redundant decoder having address program devices are used for the replacement of bad cells. The number of address program devices is one more than the number of input address bits for selecting a normal row or column. The input signals of the additional program device are complementary to the input signals of one of the other program devices. The program of the program devic...