Abstract: The system comprises a roller screw mechanism 12 which is provided with a screw 16 which comprises at least a first outer threaded portion 18, a nut 20 and a plurality of rollers 24 which cooperate with the first outer portion 18 and an inner thread of the nut. The system further comprises a roller thrust bearing 14 which is mounted on a second outer portion 52 of the screw and which is provided with a bushing 50 and a plurality of rollers 56 which comprise flanks which cooperate with flanks of the second outer portion 52 of the screw and the bushing 50. The flanks of the screw, the bushing and the rollers are configured so that, during a rotation of the screw, the rollers 56 are fixed axially relative to the screw 16 and relative to the bushing 50.

Abstract: A reduction gear assembly integrates a stationary section having a stationary internal gear configuration, an output section having an output internal gear configuration, an input shaft and planetary carrier comprising an input shaft having a shaft rotational axis and a planetary gear cam having a planetary gear rotational axis, wherein the shaft axis and cam axis are offset. A planetary gear comprising a planet wheel first stage and a planet wheel second stage is rotationally assembled to the planetary gear cam. The first stage planet wheel engages with the stationary gear. The second stage planet wheel engages with the output gear. Rotation of the input shaft rotates the planetary gear about a circular path. Engagement between the first stage and the stationary gear rotates the planetary gear. Second stage teeth engage with the output gear. Difference in first stage and second stage teeth counts causes rotation of the output section.

Abstract: A method of rotating an output gear at a rotational rate that is slower than an input rotational rate. The input rotation moves a planetary gear in a circular motion about a central axis. A first stage external gear configuration of the planetary gear engages with an internal gear configuration of a stationary gear. The engagement rotates the planetary gear about a concentrically located planetary gear rotational axis. A second stage external gear configuration is rotated by and at a same rate the first stage external gear configuration. The first stage diameter and/or number of teeth differs from the second stage diameter and/or number of teeth. The planetary gear rotation in conjunction with the difference between the first and second stages causes the output gear to rotate respective to the stationary gear. Rotational positioning of the output gear can be monitoring and adjusted by controlling the input rotational rate.

Abstract: The invention relates to a bearing (10) including an inner ring (12), an outer ring (11), and rolling bodies positioned between the inner and outer rings, one of the rings being rotary and the other not, the bearing further including: a first module (20) including at least one set of sensor(s) suitable for performing successive measurements of at least one parameter representative of the vibrations within the bearing; and a second module (20) suitable for determining a frequency representation of the signal corresponding to the successive measurements, and for obtaining a set of elements(s) representative of the frequency representation based on that frequency representation, so as to compare at least one representative element of the set with a corresponding reference element and identify a malfunction based on that comparison (10).

Abstract: An apparatus of the present invention presents a housing for engaging a mold device that includes a top plate having a top mold and a bottom plate having a bottom mold. The top plate presents side edges presenting a plurality of male elements extending therefrom. A top portion of the housing presents a safety and locking device (the device) to secure the top plate. The device presents several plates movable relative one another to secure the top plate. In case of a power outage, an actuator cooperably connected with the device prevents a shaft, connected to one of the plates, to move back to its idle position thereby locking the top plate within the device to prevent disengagement of the top plate from the device.

Abstract: A cartridge bearing assembly for rotatably coupling a shaft with a housing includes a bearing having a central axis and opposing axial ends. The bearing includes first and second, axially spaced inner rings disposeable upon the shaft, at least one outer ring disposed circumferentially about the two inner rings, and first and second sets of rolling elements disposed between the inner and outer rings. A carrier includes a first tubular portion disposed generally about the bearing first axial end and a second tubular portion disposed generally about the bearing second axial end. The first and second tubular portions are coupled together to enclose the bearing, the carrier being at least partially disposeable within the housing bore so as to couple the bearing with the housing. Preferably, a coupler is provided to connect the first and second inner rings so as to establish preload within the bearing.

Abstract: A device for changing a pitch of a blade of an impeller/propeller is disclosed. The device includes a linear actuator, a first bearing and a second bearing, allowing a relative axial movement between the first bearing and second bearing. The first bearing is mounted between a supporting structure of the rotor shaft and a non-rotary mechanical element, allowing a relative rotation between the supporting structure and the linear actuator. The second bearing is mounted between the second portion and a lever having a rotary point. Operating the linear actuator leads to an angular movement of the lever causing a change of the pitch of a blade, and when operating the at least one linear actuator, a force is generated that acts upon the non-rotary element, so that the rotor shaft is unaffected by the force.

Abstract: The invention resides in an assembly for rotationally supporting a wind turbine blade (110) relative to a wind turbine hub (120). The assembly comprises an intermediate ring (130) having an inner annular portion and an outer annular portion provided with means for attaching the turbine blade. The intermediate ring is rotatably mounted to the hub via a first bearing arrangement. According to the invention, the first bearing arrangement comprises a radial bearing (140) and a thrust bearing, whereby the inner annular portion is mounted to the hub via the radial bearing and the outer annular portion is mounted to the hub via the thrust bearing. The thrust bearing is a plain bearing comprising first and second sliding surfaces (151, 152) which are clamped to the hub between first and second clamping members (161, 162).

Abstract: A rotational and axial control spring includes a tubular casing, a shaft, and a plurality of elongated elastomeric members. The casing comprises a first end, a second end, and a plurality of interior surfaces extending therebetween defining a casing interior. The first end is smaller than the second end, forming a frustum shaped tubular casing. The cross sectional shape of the casing can include three (3) or more sides. The shaft is fabricated having a series of exterior surfaces, wherein a cross sectional shape of the shaft is similar to the cross sectional shape of the casing. The elastomeric members are formed as cylindrical frustums. The shaft is inserted within the casing interior. Each elastomeric member is positioned contacting a respective shaft exterior surface and a pair of adjacent casing interior surfaces. The elastomeric members each provide a rotational spring with adjustable resistant force and dampening functions. The tapered features provide an axial retention function.

Abstract: A flanged bearing ring has a tubular core of steel and an outer flange of a light metal in which there are formed axial through bores for accommodating bolts for mounting a wheel to the ring; fixed in each bore is a steel insert which forms a threaded inner cylindrical cavity extending between two opposite faces of the flange, and one or two transverse shoulders which are in contact with the material of the flange so as to oppose relative axial movements of the steel insert with respect to the flange.

Abstract: A rotational and axial control spring includes a tubular casing, a shaft, and a plurality of elongated elastomeric members. The casing comprises a tubular cross sectional equilateral convex polygon shape, the tubular shape extending uniformly between a first and second casing end. The shaft is fabricated having a cross sectional shape mimicking the equilateral convex polygon casing shape, a series of exterior surfaces extending longitudinally between a first smaller end and second larger end, wherein the exterior surfaces form a square frustum shape. The elastomeric members are formed as cylindrical frustums. The shaft is inserted within the casing interior. Each elastomeric member is positioned contacting a respective shaft exterior surface and a pair of adjacent casing interior surfaces. The elastomeric members provide rotational spring with adjustable resistant force and dampening functions. The tapered features provide an axial retention function.

Abstract: A valve stem seal for an internal combustion engine includes a seal body having a gas seal assembly spaced from an oil seal assembly in the axial direction of the valve stem seal. The gas seal assembly includes a first gas lip and a second gas lip disposed between the oil seal assembly and the first gas lip.

Abstract: A pressure switch comprises a housing having a cavity for conveying a pressurized fluid. The cavity extends from an inlet to an outlet and defines a flow path for the fluid. A pressure-transducing element is provided for measuring the fluid pressure. The pressure-transducing element is in fluid communication with the cavity and is at least partially disposed in the flow path between the inlet and the outlet. The pressure-transducing element has a cylindrical shape with a constant diameter and is partially disposed in a bore in the housing. The bore has a constant bore diameter. One end of the pressure-transducing element extends into the flow path.

Abstract: The invention presents a cage (1) for separating rollers in a toroidal roller bearing. The cage (1) comprises a first and second annular ring (2, 3), a plurality of elongated axial members (4) interposed between the first and second annular ring to thereby form a number of roller pockets (5). The cage further presents a portion (6) extending radially inwardly on at least one of the first and second annular ring. The portion further extends in at least a part of the circumference of the at least one first and second annular ring. The radially outer peripheral surface of the annular ring presenting the portion presents axial grooves (7) at least at the circumference having the portion, wherein each axial groove is located at the axial end face of each roller pocket in such a way that a roller can be inserted and pulled out via the axial groove into and out of each roller pocket.

Abstract: A warning device having a close range wireless interface is provided. The warning device includes a body portion, top portion, a base portion, a microcontroller for controlling the device, a battery, at least one sensor for sensing at least one of a velocity, an enveloped acceleration and a temperature reading of the bearing, and at least one LED for displaying the health status of the bearing. The close range wireless interface includes an RFID tag having an integrated circuit, and a radio, an antenna for receiving and transmitting modulated and demodulated signals, and a digital bus connecting the microcontroller to the RFID tag. The microcontroller stores at least one of the sensed velocity, enveloped acceleration and the temperature values into a memory disposed within the RFID tag. The memory is a dual access memory that enables data transfer via the RFID radio or via the digital bus.

Abstract: A method of reading sensor values from or writing programming alarm and monitoring algorithm parameters into a warning device for monitoring a bearing having a close range wireless interface is disclosed. The method of reading or writing includes providing an RFID tag having an integrated circuit with memory, a radio for modulating and demodulating a radio-frequency signal, an antenna for receiving and transmitting the radio-frequency signal, and a digital bus mounted to a PCB, the digital bus connecting a microcontroller to the RFID tag. The steps of downloading the parameters into memory, accessing the parameters with the microcontroller and adapting the parameters according to the stored parameters are carried out during a write operation. The steps of uploading the stored sensor value from memory to the radio, and transmitting the sensor value with the radio via the antenna are carried out during the reading operation.

Abstract: The present invention proposes a cam follower roller device, in particular for a fuel injection pump of an internal combustion engine, including a tappet with a sleeve having an opening for partially accommodating a roller, a roller mounted rotatably in the sleeve and having a portion which protrudes axially from the opening of the sleeve provided to cooperate with a cam, and a roller support body housed in the sleeve. The roller includes a cylindrical spindle and a cylindrical body, the ends of the spindle projecting from the lateral faces of the body. It is proposed that the support body includes supports open towards the opening of the sleeve and supporting the ends of the spindle.

Abstract: A system for harvesting energy including: an electrical machine including a first and a second structure, movable with respect to each other; a counterweight coupled to the second structure; a power transfer structure, electrically connected between the first structure and the load; an angular position sensor which provides a position signal ({right arrow over (?)}(t)) indicating the angular position of the counterweight; and an accelerometer which provides an acceleration signal ({right arrow over (a)}(t)) indicating an acceleration which affects the first structure.

Abstract: The suspension thrust bearing device for a motor vehicle comprises a rolling bearing forming a thrust bearing and provided with an upper ring, with a lower ring and with at least one row of rolling elements arranged between the rings, a bearing cap in contact with the upper ring, and a support cap in contact with the lower ring and forming a bearing means for a suspension spring. At least one of the caps comprises a body made of synthetic material and an insert covered at least in part by the body. The insert comprises stiffening ribs in order to reinforce the mechanical strength of the cap with respect to the axial loads resulting from the forces exerted by the suspension spring.

Abstract: A sealing device is provided for sealing a space between a hub and a spindle pivotally connected by a bearing, the hub being coaxially mounted on the spindle and extending in an axial direction and the bearing having an inner ring. The sealing device includes a radial shaft seal including a shell portion having an outer static sealing surface disposeable against the hub and a hinge portion having a radial sealing lip. A sleeve member includes an inner static sealing surface disposeable against the spindle, a running surface contactable by the sealing lip and a sleeve portion. The sleeve portion extends in the axial direction beyond a side surface of the bearing inner ring and is disposeable about a shoulder diameter of the bearing inner ring.