Abstract: The present invention resides in a wheel bearing unit (100) having an inner member (105) and an outer member (107) rotationally coupled to each other by at least one row of rolling elements (115), whereby at least one bearing inner ring (110) is mounted on the inner member (105). The inner member (105) comprises a first section (130) and a second section (135) that at least party lies radially inward of the first section (130). According to the invention, the first section (130) is formed from a first material and the second section (135) is formed from a metal material, preferably a lightweight metal such as aluminum.

Abstract: The roller screw mechanism is provided with a screw including an external thread, with a nut arranged about and coaxial with said screw, the nut including an internal thread, and with a plurality of rollers inserted between the screw and the nut and each including an external thread engaging the external and internal threads of said screw and of said nut. The screw is axially moveable in relation to the rollers. The flanks of the thread of the screw have a concave profile in cross section.

Abstract: The disengageable module for a system for transmitting a starting torque to an internal combustion engine, of the type comprising a ring gear connected to the crankshaft of the combustion engine, comprises an inner ring (26) intended to be coupled to the crankshaft, an outer ring (28) intended to be coupled to the ring gear, and at least one free wheel (30) provided with a plurality of wedging elements (34) mounted between raceways of the said rings. It further comprises means (50) designed to provide relative centering of the inner ring (26) and of the outer ring (28) and for transmitting radial load, the said means (50) being mounted at least partially between the inner ring and the outer ring leaving radial clearances between themselves and the said inner ring.

Abstract: To determine the contact angle of a ball bearing, one of two rings is rotated while the other ring is held stationary. The number of revolutions of the rotated ring and the number of revolutions accomplished in the same period by the balls, and therefore by the retaining cage, are detected. The revolutions of the balls are detected through an optical detecting device which projects a radiation through the bearing, in the gap between the outer and inner rings, whereby the radiation is intercepted directly by the balls and/or the cage. The contact angle is determined using the following parameters: the number of revolutions of the rotating ring, the number of revolutions of the balls or of the cage, the diameter of the balls, and the pitch diameter.

Abstract: An asymmetrical hub bearing assembly for the wheel of a motor vehicle provides a flanged hub rotatable around an axis of rotation (x), a flange transversal to the axis (x), an outer ring with raceways axially spaced from one another, and two rows of balls, of which the axially outer row has a pitch circle with a diameter greater than that of the axially inner row. The flanged hub includes a tubular portion which protrudes in the axially outer direction beyond the flange and provides a thread for a single central threaded fastener adapted to releasably lock a wheel on the hub.

Abstract: A seal assembly includes an annular body coupled with an inner member or an outer member and has inner and outer circumferential surfaces and first and second annular sealing portions spaced along a centerline. The two sealing portions either extend radially outwardly from the outer surface and have an outside diameter, with the first portion diameter being greater than the second portion diameter, or extend radially inwardly from the body inner surface and have an inside diameter, with the first portion diameter being lesser than the second portion diameter. The seal body is radially deflectable such that the first sealing portion is engaged with one of the outer and inner members, and the second sealing portion is spaced from the member, when the body is exposed to pressure lesser than a predetermined value and both sealing portions are engaged with the member at pressures above the value.

Abstract: A signaling device for signaling heating in a mechanical system susceptible to undergo contact heating during operation. The signaling device includes a body containing a thermally triggered charge generating combustion gas, ignition of the charge able to be triggered under the effect of a predetermined heat contribution, from a heating area of the body toward the charge, or under the action of an ignition command, a reservoir containing a fluid, and delivery means delivering pressurized fluid outside the reservoir through the action, directly or through an intermediate member moving in the reservoir, of the combustion gases. The signaling device also comprises at least one visual signaling element for visually signaling combustion of the charge, the visual signaling element being visible at an outer peripheral area of the signaling device after combustion of the charge. The invention also relates to a mechanical system equipped with at least one such signaling device.

Abstract: A linear actuator comprising a spindle, a spindle nut, a transmission, an electrical motor, and an actuation element, is arranged to linearly move the actuation element by means of an interaction of the spindle and the spindle nut, which interaction is being driven by the electrical motor through the transmission. A position of the actuation element, the relative position between spindle and spindle nut, is determined by means of an absolute rotary position sensor and a counter. The counter keeps track of the number of under-flows and over-flows the absolute rotary position sensor generates during movement of the actuation element. A combination of a value from the absolute rotary position sensor and a count from the counter determines the position.

Abstract: A device for injecting a fluid into a mechanical system that may undergo heating, comprising at least one body containing a thermally triggered charge generating combustion gas, ignition of the charge being able to be triggered under the action of an ignition command and/or under the effect of a heat contribution, from a heating area of the body toward the charge, a reservoir containing the fluid, means for fastening the device to the mechanical system, the fastening means adapted to put the reservoir in fluid communication with the mechanical system, and means for delivering pressurized fluid outside the reservoir through the action, directly or through intermediate means, of the combustion gases. Within the device, the fastening means comprise at least one injection sleeve provided with an outer thread coated with an anti-loosening adhesive film. The invention also relates to a mechanical system equipped with at least one such device.

Abstract: Linear actuator device, comprising a housing (2), an externally threaded screw (5) mounted to a piston (9), an internally threaded extended nut (7) and a motor (16) comprising a stator (33) and a rotor element (30) positioned around the extended nut (7), wherein a plurality of first magnets (31) of the rotor element (30) are positioned in relation to the stator (33) such that the stator (33) lies between the extended nut (7) and the first magnets (31) of the rotor element (30). The advantage of the invention is that linear actuators with a high energy density can be manufactured in an easy and cost-effective manner.

Abstract: A cage for a ball bearing comprising a body of generally annular shape and clamps, the body comprising a heel of substantially annular shape and a substantially axial portion being connected to the heel and wherein recesses are arranged for the balls, the substantially axial portion supporting said clamps on the side axially opposite to the heel, the cage comprising an axial partition placed between the recesses and extending axially from the end of the heel opposite to the clamps toward the clamps while radially delimiting external free spaces and internal free spaces situated radially on either side of said partition.

Abstract: A cartridge bottom bracket is for a bicycle having a tubular shell with a bore. The bottom bracket includes a spindle having opposing ends and a sealed cartridge disposed within the shell bore and about a central portion of the spindle so as to define opposing free end portions of the spindle. The cartridge includes a pipe having opposing ends, two rolling contact bearings disposed within the pipe adjacent to a separate one of the pipe ends and rotatably coupling the spindle with the pipe, and a tubular spacer disposed about the spindle and extending between the two bearings so as to establish a spacing distance between the bearings. Further, two shaped caps are each mounted on a separate one of the free end portions of the spindle and are disposed axially against a separate one of the bearings to enclose the free end portion of the spindle.

Abstract: A part made of a composite is intended to be subjected, through at least a point of attachment and in cooperation with connectors, to tensile and/or compressive forces. The part includes a monolithic part having a winding of fibers oriented and embedded in a matrix, and a tubular body, wherein an attachment point, based at one end of said tubular body takes the form of a strap forming a loop turning about an axis perpendicular to the axis of the tubular body, and wherein an internal wall and/or the external wall of the loop is designed to cooperate with a portion of the connector in tension and/or in compression along one or more directions.

Abstract: A sealing device for sealing a first side against a second side of a machine part, wherein the sealing device has a sealing element which contacts a counter element. At least a part of the sealing element and/or at least a part of the counter element is coated with a layer consisting of or containing fullerene-like carbon nitride (FL—CNx), wherein an inter-layer of chromium (Cr) or aluminium (Al) or molybdenum (Mo) or titanium (Ti) or tungsten (W) or a diamond-like coating (DLC) or a metal-mix diamond-like coating (Me-DLC) is arranged between the surface of the sealing element and the layer consisting of or containing fullerene-like carbon nitride and/or between the surface of the counter element and the layer consisting of or containing fullerene-like carbon nitride.

Abstract: A method for identifying root cause failure in a multi-parameter self learning machine application model is presented. At least one multi-function sensor having the capability to measure at least one of a voltage and current of the machine application model is provided. The method includes measuring voltages and currents of a multi-phase load with the multi-function sensors in a passive manor and calculating at least one of a time-varying variable KW, PF, kVAr, or Z out of the measured voltages and currents. The method further provides calculating a first, second or third order derivative of the time-varying variable and classifying segments of at least one of the time-varying variables depending on a state. Then, a step of choosing at least one of the variables and learning their normal behavior is undertaken. Finally, normal behavior is compared to a pattern difference and a root-cause meaning to the pattern difference is identified.

Abstract: A cover device includes a cover plate having at least one recessed section defining an internal volume. A separating element is inserted in the recessed section and delimits the internal volume. The separating element is configured to permit the internal volume to fluidly communicate through the separating element. At least an edge portion of the cover plate is provided with a sealing element for abutment on an opposing surface of a structure to be sealed by the cover device. The sealing element is disposed at least along an edge of the recessed section and fixedly connects the cover plate with the separating element in a sealed manner.

Abstract: A reduction gear includes a stationary sun gear, a coaxial mobile sun gear, planet gears, and a planet carrier. In order to ensure easy, reliable assembly for the reduction gear, while transmitting high torques having a considerable speed reduction, the helical gear teeth of the stationary and mobile sun gears are reversed relative to one another and are mutually separated in the direction of the main axis of rotation, thus forming a free space between them, which is suitable for adjusting the axial position of the planet gear or gears when assembling the reduction gear, such as to engage the first and second gear teeth of the planet gear with the respective gear teeth of the stationary and mobile sun gears.

Abstract: A bearing ring (160, 260, 310, 410) exhibiting an inner (155, 255) and an outer (140, 240) periphery, also exhibiting a raceway (121, 221) for rolling elements on one of said peripheries, the bearing ring exhibiting a gear structure (131-138, 231-238) on one of said peripheries, as well as exhibiting at least one welding joint (151, 251). The welding joint has been formed by flash butt welding. Preferably, the gear structure (131-138, 231-238) and/or the raceway (121, 221) have been formed by rolling, machining or a combination thereof.

Abstract: A rolling-element bearing assembly includes a device for supplying a fluid into a rolling chamber of a rolling-element bearing. The device includes a fluid supply ring disposed in the axial direction lateral to the rolling-element bearing, and at least one fluid conduit for conveying the fluid from the fluid supply ring into the rolling chamber. One end of the conduit protrudes into the rolling chamber so as to be disposed axially between a rotation-induced air cushion and the rolling elements and/or a raceway surface of the rolling element bearing.

Abstract: A bearing assembly is for a rotary drill, the drill including a base with a shaft and a bit. The bearing assembly includes a bearing having a central axis and including an inner member disposeable on the shaft and an outer member disposed about the inner member. The outer member is angularly displaceable about the axis with respect to the inner member and having an outer circumferential surface and a recess extending generally radially inwardly from the outer surface. At least one and preferably a plurality of retainer members are each disposed at least partially within the bearing outer member recess and is configured to engage with the bit so as to rotatably couple the bit with the shaft. Preferably, each retainer member includes a generally spherical ball rollable through a passage and into the bearing recess during installation into the recess.