Abstract: A protection part comprising at least two layers including an outer layer and an inner layer has its outer layer made of an aluminum alloy that is reinforced with particles of SiC, the SiC particle content in said alloy lying in the range 15% to 40% by weight, while the inner layer is made of an aluminum alloy that is optionally reinforced with SiC particles, the SiC particle content within the layers increasing from the inner layer towards the outer layer. The part is for use in protecting the leading edge of a blade, in particular a blade or vane in a turbomachine, a helicopter blade, or a propeller blade.

Abstract: The present invention is directed towards an improved flexible hose (10). The hose (10) is comprised of at least a flexible material (28) and a reinforcing rod (12) positioned externally of the flexible material (28). Terminal ends (16, 18) define both the flexible material (28) and the reinforcing rod (12). At least one terminal end (16) of the reinforcing rod (12) is located short of the terminal ends (18) of the flexible material (28), so that the non-reinforced end of the flexible material (28) forms a soft cuff (20) adapted to be received by a hose fitting. Also disclosed is an improved method of manufacturing the flexible hose (10).

Abstract: A detector for monitoring rotation of a target includes a sensor unit, a microcontroller, and an operator conversation apparatus. The operator conversation apparatus is connected to the microcontroller and enables setting of the detector in a working mode or a learning mode.

Abstract: The present invention is directed towards an improved flexible hose (10). The hose (10) is comprised of at least a flexible material (28) and a reinforcing rod (12) positioned externally of the flexible material (28). Terminal ends (16, 18) define both the flexible material (28) and the reinforcing rod (12). At least one terminal end (16) of the reinforcing rod (12) is located short of the terminal ends (18) of the flexible material (28), so that the non-reinforced end of the flexible material (28) forms a soft cuff (20) adapted to be received by a hose fitting. Also disclosed is an improved method of manufacturing the flexible hose (10).

Abstract: This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a hydrocarbon resin.

Abstract: A self-adaptable proximity detector delivering a binary output signal for the presence or absence of a target. The proximity detector includes a processing unit and operates according to a short learning mode for an adjustment relative to its environment, according to a long learning mode for an adjustment relative to its environment and to a target, and according to a working mode corresponding to normal operation. The proximity detector also includes a variable digital storage resistor driven by the processing unit in the learning mode and connected to the detection stage so that variation of the value of the digital resistor causes a variation of the switching threshold. In the working mode, the processing unit is in a standby state and the variable digital storage resistor remains at its set operating value.

Abstract: This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a hydrocarbon resin.

Abstract: This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a hydrocarbon resin.

Abstract: This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a hydrocarbon resin.

Abstract: A component of a generally cylindrical luminous signaling column housing plural conductors that are substantially parallel to the axis of the cylinder and a printed circuit bearing plural LED luminous sources. The printed circuit is oriented such that its main plane is parallel to the axis of the component and bears plural LEDs on each surface. The cylindrical luminous signaling column includes a cylindrical inner surface provided with light-diffusing reliefs.

Abstract: The present invention relates to a self-adaptable proximity detector delivering a binary output signal (23) for the presence or absence of a target (19). The detector (10) includes a processing unit (15) and operates according to a short learning mode (AC) for an adjustment relative to its environment, according to a long learning mode (AL) for an adjustment relative to its environment and to a target (19), and according to a working mode corresponding to normal operation.

Abstract: The present invention relates to a detector 10 for monitoring rotation, in front of which passes a target 19 wherein it is required that the passage frequency thereof be monitored with respect to a normal passage frequency, comprising a sensor unit 11 connected to a microcontroller 20 which delivers a binary output signal 15. Detector 10 includes means 30 for conversing with the operator, connected to the microcontroller 20 in order to set the detector 10 to a working mode or learning mode, which learning mode enables the microcontroller 20 to measure the normal passage frequency and enables an operator to select an operating range from a plurality of predefined ranges, through the conversational means 30. The microcontroller 20 calculates from the selected operating range, a triggering frequency and a resetting frequency.

Abstract: The system including a device (2) for applying an adapter (11) to a blank (1) for transferring it into and mounting it in a trimming device (3) controlled in accordance with trimming information. The system includes a device for acquiring the characteristics of a lens to be made, a device (10) for supporting the blank (1) in the device (2) for applying the adapter, devices (14, 15) for emitting/receiving radiation for analyzing the blank a device (4, 16) for acquiring the characteristics of the blank by analyzing a signal delivered by the emitting/receiving devices (14, 15) and a device (4) for determining blank trimming information for controlling the trimming device (3).

Abstract: A diamond-charged abrasive layer (3) of a grinding wheel has a convex profile over at least part of its length (L) in order to have greater resistance to wear. Also provided is a machine for grinding ophthalmic lenses which employs the grinding wheel.

Abstract: A frame holder has two jaws (1, 2) mounted so as to be slidable relative to each other in order to be movable toward or away from each other. A clamping mechanism (5) is provided for maintaining the frame (6) between the jaws in a reference plane. At least one jaw (1, 2) is provided with at least one sensor (14) which is adapted to produce a signal indicating the arrival of the jaw in a position of activation of the clamping mechanism (5) when the two jaws move toward each other. The frame holder can be used in an apparatus for analyzing rims of spectacles frames.

Abstract: This machine comprises a train of grinding wheels (T) which is keyed on a shaft (2), and a blank-holding assembly (5, 7) designed to bring the blank (8) into contact with the grinding wheels. The said machine comprises, furthermore, an additional grinding wheel (9) mounted freely rotatably on a support (10), means (11) for actuating the support, which are designed to displace the additional grinding wheel (9) between a retracted position and an active position in which its axis of rotation (Y--Y) is parallel to the axis of the said shaft and in which the additional grinding wheel is in driving contact with a drive disc (17) integral with the train of grinding wheels, and means for bringing the blank into contact with the additional grinding wheel (9) when the latter is in the active position. The invention is used for the counter-bevelling and/or grooving and/or drilling of optical glasses.

Abstract: A hose having an inner tube layer comprised of an elastomeric layer having embedded therein a screen mesh and a wire helix.

Abstract: Each node (N1) of the network is connected to each of the subscriber sets (P1-1) that are associated with the node via a single optical fiber (FP1-1) on two different wavelengths. The node is connected to each of certain other nodes via a single fiber (FN1-2) on a single wavelength. In the node, the electrical signals are supplied by two optical receivers (2, 6) and are transmitted via amplifiers (8, 10) to a single transmitter (4). A passive directional coupler (22) and a wavelength separator (20) provide the necessary optical connections. Passive optical dividers (24, 26) form two interfaces with the sets and with the other nodes. The invention is applicable in particular to industrial transmission networks.

Abstract: Apparatus of the invention includes:a diffraction grating for angularly separating the spectrum components of a beam to be processed;a grating that is conjugate with the other grating, and that makes the components parallel again; anda stair-shaped mirror for reflecting the components back to the same gratings while imposing different path lengths on the respective components.The invention is particularly applicable to compensating for the dispersion of a line fiber in a very long link between a transmitter and a receiver.

Abstract: A method of automatically and continuously labelling articles such as fruit or vegetables. The method consists in placing said articles in indented trays having parallel rows of indentations, in disposing the trays in single file on a continuously moving conveyor, said rows being disposed perpendicularly to the advance direction of the conveyor, and in moving at least one labelling head over a row of indentations with composite rectilinear translation motion resulting from longitudinal advance motion corresponding to that of the conveyor combined with transverse motion such that a label is placed successively on each article in said row, and then in renewing said operation for each of said rows. The invention also provides apparatus for implementing the method.