The system has a circuitry (9) to make the tuning fork (1) to vibrate at the angular speed, in response to an excitation signal (OSC). This mechanical vibration has a parasitic component and at least a useful component having an amplitude which represents the angular speed. The device has means to produce a electrical signal (DET), representing the mechanic vibration which includes the useful and ...

The system includes a quart tuning fork (1) which is intended to turn at the required angular speed and a circuit (9) generating a mechanical vibration within the fork in response to an oscillation signal. The mechanical vibration includes a parasitic component and a useful component having an amplitude representative of the angular speed. A circuit (21) produces two signals, one (DET) representat...

On améliore considérablement les propriétés d'utilisation de poudres de polymères superabsorbants associées à une augmentation du module mécanique des particules qui les constituent, en particulier l'absorption sous charge d'un lit épais de telles particules, et la porosité du lit de gel qu'elles forment par absorption d'eau ou de solutions salines, et les soumettant à une pos-tréticulation sou...

A super-absorbent partially crosslinked polymer has saline absorption of 50g/g, and a solid layer of the polymer has saline absorption of 20g/g and porosity of at least 500 g. Also claimed is a process for the preparation of the product using the polymer.

PCT No. PCT/FI96/00643 Sec. 371 Date Aug. 22, 1997 Sec. 102(e) Date Aug. 22, 1997 PCT Filed Dec. 22, 1995 PCT Pub. No. WO97/23363 PCT Pub. Date Jul. 3, 1997A drive system for a drive wheel of a vehicle having a hub. The drive system includes a frame, a sun gear including toothing on an outer surface, a motor arranged to rotate the sun gear via an output shaft, a revolving circular, a peripheral ge...

PCT No. PCT/FR96/01052 Sec. 371 Date Mar. 13, 1997 Sec. 102(e) Date Mar. 13, 1997 PCT Filed Jul. 5, 1996 PCT Pub. No. WO97/03487 PCT Pub. Date Jan. 30, 1997A semiconductor laser source, including a stack of semiconductor laser diodes each including at least one active region. The active region includes a series of semiconductor layers located between an ohmic contact layer and a substrate which al...

A hip prosthesis comprising a femoral stem (3), a spherical head (6) fitted over the neck (5) of the femoral stem, and a metal socket (1) with which the head is pivotably engageable. A cup (7) is inserted between the head (6) and the socket, the head and the cup are made of a ceramic or similar material having a low friction coefficient, and the head is pivotable on the cup. Said cup is pivotably ...

Dispositif avertisseur du sous-gonflage de l'un des pneumatiques d'un véhicule comprenant un châssis et au moins un essieu avec deux roues équipées de pneumatiques, basé sur une analyse des écarts de position des roues relativement au châssis, caractérisé en ce que la mesure des écarts de position des roues d'un même essieu relativement au châssis est faite au moyen d'un élément en forme généra...

A lock-case (22,23) in the door edge or jamb (21) supports a printed-circuit board (31) carrying a reader (29), generator stator coils (41) and other electrical components. A cylindrical key's (25) encoded end zone (28) is aligned with the reader. During insertion, a peg in a helical surface groove (26) drives a free-wheel assembly (32,34) geared (36,37) to the permanent magnet (39) rotor (38). Ge...

The present invention provides an apparatus and method for forming articles having compression molding means and injection molding means. Simultaneous activation of the injection molding means and compression molding means produces an integral article having a compression molded portion and an injection molded portion.

PCT No. PCT/FR95/01638 Sec. 371 Date Jun. 10, 1997 Sec. 102(e) Date Jun. 10, 1997 PCT Filed Dec. 11, 1995 PCT Pub. No. WO96/18445 PCT Pub. Date Jun. 20, 1996A process and installation for the separation of heavy and light compounds is provided. According to the process, a solid or liquid phase containing the compounds to be separated is contacted with a supercritical fluid in an extractor, after w...

PCT No. PCT/FR96/01581 Sec. 371 Date Aug. 29, 1997 Sec. 102(e) Date Aug. 29, 1997 PCT Filed Oct. 10, 1996 PCT Pub. No. WO97/13574 PCT Pub. Date Apr. 17, 1997A method of treating gas containing water in order to remove at least part of the water from the gas, including feeding the natural gas to be treated by a first line, with a liquid fraction containing at least an aqueous phase is fed via a sec...

PCT No. PCT/FR96/00775 Sec. 371 Date Nov. 24, 1997 Sec. 102(e) Date Nov. 24, 1997 PCT Filed May 23, 1996 PCT Pub. No. WO96/37933 PCT Pub. Date Nov. 28, 1996In a transmission laser feeding an optical fibre to which it is coupled, the method comprises providing a Lippmann effect structure with thin stratifications by injecting into the laser light-guide a series of individual modulating electrical c...

L'invention concerne un procédé d'isomérisation d'une charge comprenant essentiellement des hydrocarbures, de préférence des paraffines contenant principalement de 4 à 8, de préférence principalement de 4 à 6, de façon encore plus préférée principalement 5 et/ou 6 atomes de carbone par molécule, comprenant une zone de fractionnement et au moins deux zones réactionnelles d'isomérisation, ledit p...

The present invention relates to a method for manufacturing modified polysaccharides comprising of placing the polysaccharide in contact with a sugar group-transferring enzyme and a sugar group donor. The placing of the polysaccharide in contact with a sugar group-transferring enzyme and a sugar group donor can be effected in vivo as well as in vitro. The result of the method is modified polysacch...

The rigid panel (1), without a frame, comprises two reduced thickness walls (2,3) in a recyclable composite material. These walls are fixed to each other and between them are spaces (5). The composite material comprises a thermoplastic matrix of synthetic fibres reinforced with cellulose fibres. The two walls are made of the same material with the same or different Young's Modulus. The two walls h...

Telescoping vibration damper consisting of a work cylinder and a jacket tube forming an equalization chamber, whereby there is a base valve in the floor of the work cylinder. The object is to create a simple base valve which can be simply and economically manufactured and which allows an optimum flexibility of design, whereby the correct formation of the control edges can be easily accomplished. T...

Nitrure de titane dopé par du bore, cristallisant dans la même structure que le nitrure de titane TiN, et ayant une microdureté Vickers supérieure à environ 50 GPa.
Revêtement antiusure constitué d'un tel nitrure de titane dopé par du bore.
Pièces, par exemple pièces métalliques, pièces en carbure de tungstène et cermets, comportant un tel revêtement.

A door assembly in which the leading edge of a hinged door (7) is closeable against a closure recess (14) of a door jamb (6) which is rotatable about its longitudinal axis. Linkage means (13) are provided between the door (7) and the door jamb (6) to rotate the jamb upon movement of the door about its hinge and reduce the danger of fingers being damaged.