Abstract: An artificial chamber for a corneo-scleral disk for the purpose of taking a graft therefrom, the chamber comprising a stand, a cornea support carried by the stand, having a vertical axis, and possessing a head having a supporting top face into which there opens out at least one feed orifice, and a clamping ring for clamping the corneo-scleral disk on the cornea support. The clamping ring is fixed and carried by the stand, while the cornea support is mounted on the stand so as to slide along the vertical axis of the cornea support under drive from actuator means.

Abstract: A Kaplan turbine or similar hydraulic machine has a hub body (1) fixed to the turbine shaft with radial blades attached to the hub body. The blades are fitted with oil lubricated bearings in the hub body. A sealing arrangement for the oil system has first (60) and second (61) circumferential sealing members with a circumferential space (65) between the first and second sealing members (60, 61). High pressure water from a water source is directed into the circumferential space (65) via a connecting channel (64) to block the lubricating oil from leaking into the working fluid.

Abstract: Thermoelectric sensor (12) formed by a membrane (14) including a plurality of thermoelectric elements (20) formed of a plurality of thermoelectric couples and forming a plurality of elementary cells. Each elementary cell is thermally insulated from adjacent elementary cells by metal wires (22, 23), preferably gold wires, arranged on the front face (25) of the membrane (14), more particularly, on an upper passivation layer (30). The metal wires (22 and 23) are thermally connected to a substrate (16) supporting said membrane. The two wires separating two adjacent thermoelectric elements (20) are separated from each other by an intermediate low thermal conduction region (28).

Abstract: An artificial vision system which simulates a retinal image obtained when a subject views a standard measuring object by turning his eyeball with respect to an eyeglass lens. An artificial vision lens system corresponding to an ocular optical system and a CCD camera having a CCD plane corresponding to a retina are provided within an artificial vision camera. Rotary movement of the eyeball centering on its turning point with respect to an eyeglass lens is simulated by turning the artificial vision camera in the horizontal direction by a rotary stage and by turning the glass lens in the vertical direction by another rotary stage. Turning and parallel movement mechanisms are provided under a stage on which the lens and the artificial vision camera are mounted so that the artificial vision camera always points toward a predetermined position on the standard object as viewed through the lens.

Abstract: Magnetic microswitch able to be actuated by a magnetic field, including two strips (1, 2) each including a distal portion (5, 5') whose overlap forms an air gap of distance e, at least one of said strips (1) made of magnetic material having one end (3) attached to the substrate via a foot (9), a median portion (4) and a distal portion (5) of length L.sub.o, said strip being flexible with respect to the second strip (2). The median portion (4) of the flexible strip (1) is formed with a total cross-section less than that of the distal portion (5) so as to have a lesser bending resistance allowing the strip to have both deflection of an amplitude at least equal to e to make contact under the influence of a magnetic field and sufficient return force towards the open position in the absence of a magnetic field.

Abstract: There is provided a uniform heating structure in the heating device formed in the shape of a hollow block made of a heat-resistant metal, in which the surface of the heating device is used as a heat transfer surface, and a high thermal-conductivity material with a thermal conductivity higher than the thermal conductivity of the metal is located adjacent to the heat transfer surface in such a manner that heat can be transferred to the heat transfer surface.

Abstract: A cyclonic type combustion apparatus that may be constituted so as to jet out a premixed gas made up of a mixture of a gaseous fuel and air into a cylindrical combustion chamber, from nozzle ports provided on an inside cylinder wall, the combustion apparatus being especially adapted for heating the liquid medium in hot water heaters, smoke tube boilers, and the like. For instance, a premixed gas obtained by mixing a gaseous fuel with air is jetted out into a cylindrical combustion chamber from a nozzle port opened on its inner peripheral surface along the inner peripheral surface in its tangential direction. The combustion chamber is disposed in a storage region containing heating medium water. The peripheral wall of the combustion chamber is constituted to be a heat conductive wall which is in contact with the heating medium water. The flame formed by the premixed gas jetted out from the nozzle port is cooled by the heating medium water.

Abstract: The invention relates to a process and apparatus for the separation of heavier from lighter fractions in aqueous slurries by means of centrifugal force. A slurry is made to spin in a separation chamber under influence of differential pressure. The differential pressure, which can amount to several bars, is generated by means of a pressure increasing stage in the form of a transport rotor device (20) which acts in conjunction with a stator arrangement (22). This pressure boosting stage takes place immediately upstream of an inlet of the slurry into the separation chamber (4). Rotor blades of a cyclone rotor device (10) and rotor blades of the transport rotor device (20) can be mounted on the same rotary shaft (5). The separation of floatable fractions in aqueous slurries can be enhanced by presence of micro gas bubbles introduced into the separation chamber (4).

Abstract: The bracelet-watch comprises a case (1) including a back cover (2), a crystal (3) and a middle part (4) surrounding a movement (5) and two bracelet portions (6, 7) attached to the case, each portion being made by means of links (8) articulated one after the other via cylindrical bars (9) inserted between the links, the links (8) and the bars (9) of each of the portions (6, 7) being held together by a flexible tie (10) which passes through them, this tie attaching said portion to said middle part, characterized in that the tie (10) is fixed via its first end (11) to a final link (12) of the bracelet portion to pass first, into first holes (13, 14), through the links and bars constituting said portion and in that the tie (10) then passes into the middle part (4) then comes out again to pass finally, into second holes (15, 16), through the same links (8) and bars (9) in order to be fixed, via its second end (17), to said final link (12) of said bracelet portion.

Abstract: Active ingredients such as medicines are mixed with excipient and then kneaded together with binder and solvent such as alcohol or water to prepare a wetted paste. A mold is filled with this paste. Top and bottom surfaces of the paste within the mold are coated with powder such as lubricant in order to avoid possible sticking of the paste to the apparatus during a subsequent compression step. Then a compressive pressure is exerted on the surface of the paste. Thereafter, the tablet is taken from the mold. The molded tablet can contain water-soluble or fat-soluble medicine.

Abstract: An agricultural implement provides improvements in ground-working implements having both a lowered ground-working mode and a raised transport mode wherein structure is provided to offset the effects of the moment forces created in the working mode. A fluid circuit is connected to a fluid actuator for controlling forces exerted thereby between a hitch member and the implement main frame and it is operable in a working mode to exert a resilient biasing force on the hitch member thus enabling pivotal floating motion of the hitch member while simultaneously countering force moments applied to the main frame by the ground-working tool. This system is also operable in a transport mode wherein the actuator exerts sufficient force between the hitch member and the forward end of the main frame as to assist in lifting and maintaining the implement in a raised transport mode.

Abstract: The present invention provides medicinal compounds that are characterized by a cyclic moiety (A) linked through a carboxamido group (more specifically, a carbamate group or a urea group) to another cyclic moiety (B) which is in turn linked to another, N-substituted carboxamido group. These compounds can be used an anti-inflammatory and immunosuppressive agents, as demonstrated by their inhibition of the production of IL-1.beta. in vitro and TNF.alpha. in vivo.

Abstract: The invention concerns a multi-purpose revolving connecting assembly intended to connect dental instruments (1a, 1b) having rear portions (22) of different geometrical configurations to a supply source (S).This connecting assembly is characterized in that it includes a nut (16) formed, at the front, of a removable sleeve (50a, 50b) and, at the rear, of a bush (52) which can be connected to the sleeve (50a, 50b) by a screw-nut system, the sleeve (50a, 50b) being provided to be fixed onto the dental instrument (1a, 1b), while the socket (52) has a support surface (58b) intended to abut against the ring (4) axially holding a mobile coupling piece (28a, 28b) on a fixed coupling piece (26).

Abstract: The present invention refers to the use of Macrophage Stimulating Protein (MSP) for the preparation of a medicament for the treatment of pathologies of the central and peripheral nervous system of traumatic, infectious or inflammatory origin.

Abstract: The invention relates to a method for producing powdery, vitreous carbon, and a paste made therefrom for producing resistive films having predetermined electrical conductivity. In production methods known in the art, pyrolysis of acrylamides is performed in mixture with water-soluble salts and, following pyrolysis, the powdered portion of the vitreous carbon is recovered by dissolving the salt component in water. The vitreous carbon is then dried, and the powder obtained in this manner is pulverized once again, as needed. A disadvantage of this method is that it is very time-consuming. In the solution now recommended, a preferably aromatic polymer is cured into a resin that is cross-linked in three dimensions, and in this state is ground to a powder prior to pyrolysis. Pyrolysis of the resulting powder is performed in a nitrogen atmosphere, so that powdered, vitreous carbons having different resistivities are obtained by using different final pyrolysis temperatures in each pyrolysis process.

Abstract: Transducer, in particular clockwork driving motor, comprising a stator (2) formed of two stator parts (16 and 26) and three cores (18, 19, 20) connecting respectively three magnetic poles (28, 29, 30), defined by the first stator part (16), to the second stator part (26) used to close the magnetic paths of the transducer. The coils (22 and 24) are used to supply the transducer to drive in rotation respectively the two rotors (4 and 6). The coil (23) is connected to detection means (72) used for detecting the rotation of one or other of the two rotors (4 and 6), and in particular, for detecting zero crossing of the induced voltage (or similarly of the induced current) in the coil (23). Detection of zero crossing of the induced voltage is used to provide input signals to the supply means (70) to control driving of the rotors (4 and 6) in an efficient and reliable manner, in particular in a rapid or continuous operating mode, whether in a forward or backward rotational direction.

Abstract: An antenna unit for measuring the velocity of a flowing material by the Doppler effect is particularly suited for use where only a limited space is available. The antenna unit comprises a support block having first and second surfaces disposed at an acute angle (optimally 45.degree.) relative to each other. A printed circuit antenna card having thereon a high gain antenna comprising a phased array of antenna elements is mounted to the second surface and radiates microwave energy toward the first surface. A plate having an opening therein is disposed adjacent the first surface, the plate being made of a material which absorbs radiated energy incident thereon. The support block is provided with a recess for receiving an absorber wedge which absorbs the energy radiated in near side lobes. The absorber wedge and plate shape the radiation pattern so that energy radiated by the antenna intercepts the material at an angle of 45.degree..+-.15.degree. when the first surface is disposed parallel to the axis of flow.

Abstract: Microkeratome for surgery of the cornea, comprising a securing ring (1) which includes, on an upper surface, a slide (8), and a blade carriage (10) equipped in the lower part with guide means (13) for cooperating with the slide (8), the ring including a maneuvering grip, the blade carriage (10) including a front section (12) forming a plateau (16) for flattening the cornea, in which the ring (1) and the carriage (10) include abutments (17, 18) for regulating the end of slide position of the carriage (10) in relation to the ring (1).