Abstract: A torsional compensator having an inner hub, an outer sprocket, left and right grippers, and a resilient torsion sleeve. The torsion sleeve occupies a generally annular cavity between the inner hub and outer sprocket and each end of the sleeve is coupled to a gripper. One gripper is coupled to the inside of the outer sprocket and the other gripper is coupled to the outside of the inner hub and they are axially spaced apart. The inner hub supports the outer sprocket for coaxial rotation thereon.

Abstract: Provided is a strain wave gearing having a high stiffness and no limitation imposed on rotation, and a robotic arm including the strain wave gearing. A strain wave gearing includes an electric motor and a strain wave gearing reducer. The strain wave gearing reducer includes: an outer ring member including a first internal gear; a pair of second internal gears each having internal teeth formed along an inner periphery thereof, and the pair of second internal gears differing from the first internal gear in number of teeth; a flexible gear; and a cam member, which distorts the flexible gear in a radial direction to cause the flexible gear to engage with the first internal gear and the pair of second internal gears. The pair of second internal gears is fixed to a pair of fixing plates coupled to each other by a shaft penetrating the cam member.

Abstract: A torque transmission assembly includes two structural component parts for coupled engagement to one another so as to rotate together around an axis of rotation, a first of these structural component parts has an inner circumferential toothing and a second of these structural component parts has an outer circumferential toothing for a rotary coupling engagement with the inner circumferential toothing. The teeth in one toothing of an inner circumferential toothing and outer circumferential toothing are bounded by end faces in a first axial end area of the one toothing. The one toothing has at least one tooth with an end face which is extended forward axially relative to the end faces of the other teeth of the one toothing, and the end face of at least one tooth of the one toothing with the end face which is extended forward axially forms a circumferentially deflecting end face for the other toothing.

Abstract: An actuator for a state changeover element that is actuated in a manner interlocking with the tilting of a tilt member is provided. The actuator is equipped with a rotational power generating portion, an output shaft coaxially and integrally rotatably coupled to a tilt spindle of the tilt member to output a rotational power generated by the rotational power generating portion, a casing that covers the actuator and having an opening for exposing one axial end side of the output shaft to an outside. The actuator is further equipped with a rotational angle limiting unit provided between the output shaft and a wall portion of the casing radially facing the output shaft to physically limit a rotational angle of the output shaft. A range changeover device for an automatic transmission equipped with this actuator and a parking device equipped with this actuator are provided.

Abstract: A door drive for garage, garden, hall or factory doors, comprising a motor unit which comprises a drive motor and a motor output shaft, an output transmission, which on the input end can be connected with the motor output shaft and on the output end includes a transmission output shaft for driving a door moving element, in particular a door shaft, a release clutch for releasing the motor output shaft with respect to the door moving element as well as at least one damping element for damping drive shocks. The door drive is characterized in that the output transmission includes a transmission housing formed separate from the motor unit and together with the release clutch and the damping element forms a separate, modular drive attachment, which can be connected on the one hand to the motor unit and on the other hand to the door moving element.

Abstract: The invention relates to a backlash-compensating toothed moving part, for a precision gear assembly, particularly in clock-making, in which the backlash-compensating teeth each have a section extending symmetrically to both sides of the radius of said mobile passing the tip of said teeth with an elastic connection to said mobile to give said teeth a freedom of movement in the plane of the mobile, at least one tooth in two being a backlash-compensating tooth comprising stop means arranged to limit the freedom of movement as a function of the backlash in the gear assembly to be compensated for.

Abstract: An integrated supplemental motor system for e-bikes incorporates a motor stator carried by a fixed axle with a torroidal cavity surrounding the axle. A motor rotor for interaction with the stator is supported by a motor casing rotatable on a plurality of bearings carried by the fixed axle. A torque member is concentrically carried within the torroidal cavity and has a first attachment engaged to a gear cluster for force input and a second resilient attachment for engagement to the motor casing. The torque member is urged by the gear cluster from a first no force position resiliently through a range of motion to a second maximum force position. A first element connected to the torque member has a set of first signal generation interfaces and a second element connected to the motor case has an equal set of second signal generation interfaces. The first and second signal generation interfaces are spaced in relation to the range of motion of the torque member.

Abstract: A sprocket unit comprising: a damper mounted on the first shaft with a first face defining a recess and a second face defining chambers for receiving spring loaded weights; a sprocket mounted to the first shaft with a hub defining an aperture and a slot; a front end plate mounted on the shaft with a hub defining an aperture aligned with the aperture of the sprocket; and a spring received within the aperture of the sprocket, the aperture of the front end plate, and the recess of the damper. When the first shaft rotates and firing frequency of the engine coincides with a resonant frequency of the first shaft, the spring loaded weights slide in the chambers of the damper, dampening out the resonant frequency in the first shaft and when the sprocket rotates the spring compresses and extends, reducing torsional load of the first shaft on the second shaft.

Abstract: A harmonic drive according to the present invention comprises a plurality of internal gears; a band type of flexible gear provided with teeth engaged with each of the internal gears on its outer circumferential surface, the flexible gear having a pitch circumference length shorter than that of said internal gears; and a wave generating part disposed on an inner side of said flexible gear, the wave generating part generating a plurality of harmonic motions by deforming said flexible gear as the wave generating part rotates. Further, said flexible gear is formed integrally to engage with said plurality of internal gears so that the plurality of harmonic motions are overlapped, and one or more of said plurality of internal gears and said flexible gear are formed of profile shifted gears.

Abstract: First gear for use in a gear set including a second gear has a hub to which are attached a plurality of arms made of an elastic material. Each pair of adjacent arms defines a slot between them into which the arms may bend. The arms can deflect elastically in the plane as a cantilevered beam. Each arm has on the end thereof, a tooth for meshing with a tooth on the second gear to allow transfer of force between the first gear's tooth and the meshing second gear's tooth. A load distributor in contact with at least first and second arms distributes to the second arm at least a portion of force received by the first arm's tooth while the first arm's tooth meshes with a tooth on the second gear. In one embodiment, the load distributor comprises an insert within the slot between the first and second arms.

Abstract: A power unit for a vehicle includes a buffering device provided on a final shaft parallel to a countershaft of a speed change gear which is configured to change a speed resulting from rotational power inputted from an engine stepwise. The buffering device includes a damper gear wheel supported for relative rotation on the final shaft, a lifter coupled against relative rotation but for relative movement in an axial direction on the final shaft and engaged by a cam provided on one face of the damper gear wheel, a spring retainer supported at a position on the final shaft spaced apart from the lifter, and a coil spring provided between the lifter and the spring retainer in such a manner as to exert spring force for biasing the lifter toward the damper gear wheel.

Abstract: A driving mechanism for a carrier can prevent drive transmission units used for reciprocation of the carrier from becoming damaged, dented, or deformed even when an apparatus receives vibration or impact from the outside. The driving mechanism includes first and second pinion components held by a carrier, first and second rack segments fixed to a main apparatus body, and a connector rack segment fixed between the first and second rack segments. When the carrier performs recording, the first pinion component engages with the first rack segment. When the carrier is at a home position, the second pinion component engages with the second rack segment.

Abstract: The invention relates to a transmission device comprising a first gear wheel and a second gear wheel that is rotatably coupled thereto, wherein a damping element acting in the circumferential direction is provided axially between the gear wheels. According to the invention it is provided that the damping element can be tensioned by the gear wheels during the operation of the transmission device.

Abstract: A gear device which vibrates less and emits less noise. The gear device has a first gear provided to a first shaft, a second gear provided to a second shaft and meshing with the first gear, and a third gear provided to a third shaft and meshing with the second gear. The second gear has formed therein through-holes extending in the circumferential direction about the rotation axis of the second gear, and this changes the circumferential rigidity of the second gear.

Abstract: A gear blank is provided. It comprises a metal hub blank having an outer perimeter. A plurality of individual adjacent tabs extend radially from the outer perimeter of the metal hub blank. A polymeric ring overlaying a portion of the metal hub blank including the tabs is provided.

Abstract: One exemplary embodiment includes a transfer gear that carries a friction damping component that damps vibrations in the gear. The friction damping component may be carried on or in a hub, a web, or both the hub and the web, and may include at least one non-bonded surface that contacts an adjacent surface.

Abstract: A gear including a pinion being integral with a rotatably mounted shaft in a support by a cleavable element arranged to disengage the pinion from the shaft in case of an overcouple between the pinion and the shaft is disclosed. A guiding bearing, pending between the pinion and the shaft, is arranged to rotatably guide the pinion around the shaft, in case of a disengagement of the pinion from the shaft. In a turbomachine, a gear box including such a gear allows the driving of auxiliary machines in case of a breakdown of a shaft in the gear box.

Abstract: A gear including a pinion, a shaft and a disc is disclosed. The disc includes a cleavable element arranged to disengage the pinion from the shaft in case of an overcouple between the pinion and the shaft. A guiding module of the pinion is arranged to maintain the pinion in rotation in the support in case of a disengagement of the pinion from the shaft. In a turbo-machine, a gear box including such a gear allows the driving of auxiliary machines in case of a breakdown of a shaft in the gear box.

Abstract: A plastic gear having a gear peripheral portion including a tooth portion is constituted by a plastic material, and a gear inner circumferential member with an annular shape or a disk shape is provided at the inner circumferential side of the gear peripheral portion. The gear peripheral portion includes an inner core and a surface layer member, the inner core being covered with the surface layer member and made of plastic with high elastic modulus and high strength, and the surface layer member being made of plastic with relatively low elastic modulus. The inner core is revolvably fitted around the gear inner circumferential member so as to revolve around the gear revolving axis, and an engaging portion is provided at an interface of the surface layer member and the gear inner circumferential member for preventing relative revolution around the gear revolving axis.

Abstract: An anti-backlash gear includes a first gear and a second gear. The first gear preferably includes a gear plate, a plurality of snap projections and a finger hub. The plurality of snap projections and the finger hub extend from one face of the gear plate. The finger hub includes at least one substantially circular cavity. The second gear preferably includes a gear ring, a tubular projection and at least one spring finger. The tubular projection extends from one face of the gear ring. A snap bore is formed in the tubular projection. The at least one spring finger extends from an inside perimeter of the tubular projection. Each spring finger is terminated with a substantial retention cylinder for retention in the substantially circular opening. The second gear is pushed on to the first gear. The plurality of snap projections are retained on a bottom of the snap bore.

Abstract: This invention relates to a gear mounting having a spindle (11) extending substantially normal to a carrier (12) and capable of radial excursions from an initial position, when under load. The spindle and carrier have generally conical abutment surfaces (23, 24) normals to which extend substantially through the centroid of a projecting portion of the spindle, and in the initial position of the spindle there is a gap between the abutment surfaces.

Abstract: A motor-vehicle gear arrangement for a power-assist gearing in a motor vehicle, that includes a gear, a flange arrangement including at least one flange, wherein the gear is located adjacent to the flange in the flange arrangement so as to rotate about a common axis, and at least one connecting element to connect the gear to the at least one flange. This gear arrangement, or a flange for this gear arrangement, is advantageous due to the fact that the ribs are formed on the flange laterally within a plane perpendicularly to the rotational axis so as to reinforce the flange.

Abstract: A transmission system includes two or more independent chambers, in each of which shafts with gears thereon are provided for rolling in synchronous motion, and a carrier with adjustable gear devices on a bottom thereof. Each of the adjustable gear devices has a base, a movable rack member, vertical springs and horizontal springs. The movable rack member is connected to the base to be moved along a horizontal direction. The vertical springs are provided between the base and the carrier to urge the adjustable gear device along a vertical direction. The movable rack member has a rack portion to be meshed with the gears of the shafts, such that the carrier is moved by the gears to cross the chambers. With the movement of the movable rack member both along the horizontal and the vertical direction, the carrier is transported in a smooth, synchronous, skid-proof, stable and real-time motion during the crossing chamber process.

Abstract: A rotary device, for example in the form of a gear wheel, comprises a hub (2) and an outer element (4) carrying teeth (28). The outer element (4) is provided with resilient fingers (20) which frictionally engage cam surfaces (38) provided on the hub (2). Relative rotation between the hub (2) and the outer element (4) is resisted by deflection of the fingers (20). Relative rotation between the hub (2) and the outer element (4) is limited by engagement between projections (32) and recesses (34). A combination of torsional spring force created by the flexible fingers together with friction between the fingers (20) and the cam surfaces (38) and between the recesses (46) and the projections (32) provide a damping effect which serves to limit the transmission of torsional vibrations between the hub (2) and the outer element (4).

Abstract: The invention relates to a gear train element in a gear train arrangement (5, 18), said gear train element (5) being driven on the drive side by a drive motor (1), on whose power take-off shaft (2) the gear train element (5) is mounted. The peripheral surface of the gear train element (5) is provided with a toothed gearing (7), and said element meshes with one or more toothed gearings of additional gear train elements (18). Axially displaceable and adjustable support elements (11, 12; 33, 34, 35, 36) and sleeve-type followers (13, 14; 30, 31) are mounted between the power take-off shaft (2) and a set of springs (8) and also between the set of springs (8) and the gear train element (5).

Abstract: A compliant gear assembly includes a gear ring positioned about a hub and configured to translate responsive to a torque on the gear assembly, and biased toward co-axial alignment with the hub via at least one actuator. A method of managing loads on an idler gear in the gear train is still further provided including translating the gear ring responsive to the torque on the idler gear. A work machine includes an engine having a housing and a geartrain mounted thereon, the geartrain including a crank gear, a cam gear and a compliant idler gear assembly.

Abstract: A variable stiffness support has a support housing that is configured to adjust the orientation of an internal elastomer assembly. The support housing includes an adjustment mechanism, and the elastomer assembly includes an outer ring that encircles an elastomeric material, a central bushing embedded in the elastomeric material, and a plurality of shims embedded in the elastomeric material in a parallel planar fashion.

Abstract: An electrical steering system for a motor vehicle, having an electric motor having a worm gear which is made up of a worm and a worm wheel, coupled to an input shaft, having a ring gear, worm wheel forming one of the two coupling parts, that are to be coupled to each other, of an elastic compensation coupling whose other coupling part is connected, rotatably fixed, to the input shaft. The two coupling parts are coupled to each other only by one or by a plurality of elastic spacers.

Abstract: A gear mechanism includes a pair of gears including first and second gears overlapped with each other in an axial direction. The first and second gears include first and second tooth portions, respectively. The first tooth portion slightly projects outwardly from the second tooth portion. The first gear is formed with a deformation facilitating portion for facilitating deformation of the first gear in a radial direction.

Abstract: The invention relates to a backlash-compensating toothed moving part, for a precision gear assembly, particularly in clock-making, in which the backlash-compensating teeth each have a section extending symmetrically to both sides of the radius of said mobile passing the tip of said teeth with an elastic connection to said mobile to give said teeth a freedom of movement in the plane of the mobile, at least one tooth in two being a backlash-compensating tooth comprising stop means (6, 7; 8a, 8b, 9a, 9b; 14; 17a; 18a; 29; 31a, 34; 31b, 35; 40) arranged to limit the freedom of movement as a function of the backlash in the gear assembly to be compensated for.

Abstract: A composite ring gear (10) with a metallic gear insert (30) has at least one filament (34) wound about the gear insert and an eyelet (32) a plurality of times. The filament is adapted to withstand a portion of a tensile load transmitted between the insert and the eyelet. The insert, eyelet and filament are then embedded in a composite material.

Abstract: In the event that a moment in a bending direction is generated in a pinion shaft, for example, when a vehicle is involved in a collision or the like, since a bending facilitating portion which is a circumferential groove 111e bends, stress is concentrated hereon, and no large bending stress is generated in any case between a rolling bearing 102 and a support member 104. Consequently, an excessively large bending force is transmitted in no case to a four point contact type ball bearing 103.

Abstract: A compliant gear assembly for a gear train of an internal combustion engine includes a hub subassembly having a first hub component and a second hub component. The first hub component defines a first axis, and the compliant gear assembly includes a gear ring rotatable relative to the hub subassembly and defining a gear ring axis of rotation. The second hub component is movable relative to the first hub component in a direction normal to the first axis between a first stop position at which the gear ring axis of rotation is co-linear with the first axis and a second stop position at which the gear ring axis of rotation is parallel to but not co-linear with the first axis. A compliance mechanism is coupled between the first hub component and the second hub component and biases the second hub component toward the first stop position.

Abstract: The present invention relates to a sliding clutch made of plastic material, which is especially suitable for the use in adjustment drives for vehicular exterior mirrors. The sliding clutch thereby comprises a first clutch part and a second clutch part, wherein the first clutch part and the second clutch part abut one another with planar faces in such a way that they are into engagement with one another up to a maximum torque only because of static friction. In this way, a sliding operation without rattling noises can be guaranteed. For achieving this safety function by means of which no force or torque transmission occurs from a predetermined torque range, no further mechanical components or additional electrical controls are required.

Abstract: A gear support mechanism for supporting two gears and an intermediate gear which meshes with the two gears to transfer rotation of one of the two gears to the other, includes a gear-shaft support member(s) which supports a gear shaft of the intermediate gear; and a spring member installed between the gear-shaft support member and the intermediate gear. The spring member includes a gear contacting portion which is in contact with the intermediate gear, and resilient support legs extend radially from the gear contacting portion and are in contact with the gear-shaft support member, the spring member biasing the intermediate gear in a direction of an axis of the gear shaft. Each of the two gears is positioned in an inter-leg space between adjacent resilient support legs as viewed in a direction along the axis of the gear shaft.

Abstract: A gear assembly for transmitting torque from one shaft to another comprises two intermeshing gears mounted on respective shafts. One of the gears comprises a hub member for receiving one of the shafts, a toothed annular member mounted for rotation with the hub member. At least one spring provided between the hub member and the annular member has stiffness capable of reducing torsional vibrations and noise induced during rotation of the gears by the eccentricity of at least one of the gears.

Abstract: A resin-made gearing apparatus that includes a configuration in which only one tooth flank side of each tooth in one of a pair of gears is provided with an overhang section that is disposed on at least one end portion in a tooth width direction, and overhangs diagonally from the one tooth flank side toward the adjacent tooth side; an end portion in a tooth width direction of each tooth in the other gear is provided with a lightening section that is disposed in a tooth flank of each tooth on an end face on the side of the end portion corresponding to the overhang section of the one gear, so that when the opposite teeth of the pair of gears are meshed with each other, the overhang section of the one gear is elastically deformed and also the lightening section of the other gear is elastically deformed, to absorb a backlash.

Abstract: An anti-backlash nut mechanism includes two segmental nuts composing a nut which are not separated when the nuts are disengaged from a male screw. An anti-backlash nut has a main nut and a trailing nut which can be engaged with a common male screw, a coil spring for biasing the main and trailing nuts away from each other, a cylindrical portion formed in conjunction with the main nut so as to surround the lead screw, an insert portion formed in conjunction with the trailing nut to be inserted into the cylindrical portion, pins projecting in the radial direction from either one of the cylindrical portion and the insert portion, and grooves formed around the other one of the cylindrical portion and the insert portion so as to receive the pins from the edge of the cylindrical portion and to engage with the pins in the turning direction of the nuts.

Abstract: A motor shaft puts through a motor casing and a gear casing which are detachably connected to each other. In the motor casing, a rotor is fixed to the motor shaft, while a stator is fixed on the inner circumferential surface of the motor casing. The motor shaft has a worm which engages with a worm wheel in the gear casing. A collar in which the motor shaft is pressingly fitted is provided in the middle of the motor shaft at the end of the gear casing. The motor shaft is supported at each end of the worm in the gear casing.

Abstract: A vehicular transmission has a structure which enables a reverse idle gear to absorb and reduce excessive back torque inputted from drive wheels. At the time of reverse traveling motion, a counter shaft and a reverse gear are connected to each other through the intermediation of a clutch mechanism, whereby the power of the counter shaft is transmitted from the reverse gear, a driven gear, a hollow shaft, and a drive gear to the drive shaft by way of a final gear. When a large back torque is inputted to the final gear from the drive shaft, the inputted back torque is transmitted to the drive gear, and is then further transmitted to the driven gear by way of the hollow shaft. Since the hollow shaft is thin-walled and has reduced rigidity, it undergoes circumferential twisting due to the back torque inputted, whereby the back torque is reduced.

Abstract: A power tool includes an impact damping mechanism for damping an impact in a direction of rotation of a speed reduction mechanism portion 8.

Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear, planet gears (6) organized in two arrays between the sun and ring gears, and a carrier (8) having walls (14) located beyond the planet gears and flexpins (24) that project from the walls into the planet gears. Each flexpin includes an inner pin (30) provided with a flange 36 that is secured to the wall from which the inner pin projects, thus cantilevering the inner pin from the wall, and a sleeve (32) that is cantilevered from the opposite end of the inner pin and extends back over the inner pin, thus providing a double cantilever. Between the sleeve of the flexpin and the planet gear for that flexpin is a double row tapered roller bearing (26). The planet gears on the one array may be offset angularly with respect to the planet gears of the other array.

Abstract: A plastic molded gear capable of reducing teeth knocking noises due to backlash during engagement. A protruding portion 5 for eliminating backlash is formed so as to protrude from both end portions in facewidth directions on one tooth flank 6 of each tooth 2, and the protruding portion 5 is not formed on the other tooth flank 12 of the tooth 2. If the protruding portion 5 is elastically deformed so as to absorb backlash, the protruding portion 5 has the same plane as that of the one tooth flank 6, and the other tooth flank 12 of the tooth 2 serves as a main power transmission surface. With this construction, the protruding portion 5 elastically contacts the tooth flank of a companion gear engaged with the plastic molded gear, so that the elastic deformation of the protruding portion 5 absorbs rotational energy of the companion gear during intermittent rotation.

Abstract: A seal retainer device for fixing the position of at least one sealing device, comprising at least one contact surface for fixing the position of a seal in the radial and/or axial direction, a first functional surface for linking to a component, and at least one second functional surface to form an axial or radial bearing sliding surface. In addition, the invention relates to a power transmission unit having a seal retainer that holds seals for sealing off two pressure chambers.

Abstract: A power tool including a gear unit provided with a load moderating mechanism capable of reducing noise and prolonging service life. A coupling is force fitted with a spindle at a predetermined pressure allowing the spindle and the coupling to rotate relative to each other when a load exceeding a predetermined load is applied therebetween. A gear has a surround section having a convex and surrounding the coupling. The coupling has an abutment projection abutable against the convex and a damper projection. An elastic member is interposed between the damper projection and the surround section. Rotation of the gear is transmitted to the spindle through the elastic member and the coupling.

Abstract: A hand-held power tool (2) includes an angle drive (20) for connecting the motor-driven driving shaft (6) and the driven shaft (10) connected with a tooth holder (24) for joint rotation therewith, and having drive toothing (14) provided on the drive shaft (6) and driven toothing (16) provided on the driven shaft and cooperating with the drive toothing (14) for driving the driven shaft (10) in the driven direction (DAb) in response to the drive shaft (6) being driven in the drive direction (DAn), with the driven toothing (16) being inclined over its circumference (36) in a direction opposite the driven direction (DAb), and with the driven shaft (10) having an axial stop (30) for limiting an axial displacement backlash of the drive shaft (6) relative to the driven shaft (10).

Abstract: A compliant gear assembly includes a gear ring positioned about a hub and configured to translate responsive to a torque on the gear assembly, and biased toward co-axial alignment with the hub via at least one actuator. A method of managing loads on an idler gear in the gear train is still further provided including translating the gear ring responsive to the torque on the idler gear. A work machine includes an engine having a housing and a geartrain mounted thereon, the geartrain including a crank gear, a cam gear and a compliant idler gear assembly.

Abstract: A resin worm wheel is formed by injection molding and includes a first end and a second end. The worm wheel is adapted to be driven by a worm. The worm wheel further includes: an engaging portion including a plurality of teeth engageable with the worm and a tooth space formed between the neighboring teeth; a first non-engaging portion adjacent to the engaging portion at the first end of the worm wheel and not engaging with the worm; and a first cutout portion formed at the first non-engaging portion continuously from the tooth space, the first cutout portion extending axially.

Abstract: A torsionally tuned damper assembly for a geared power transmission is disclosed. The damper assembly, at a power output end of a transmission power output shaft, has an inertia ring with a calibrated natural torsional frequency that reduces the resonance energy developed by gear rattle forces at a transmission gear mesh.

Abstract: The present invention relates to an energy storage disconnecting switch used in extra-high voltage and ultra-high voltage grid, in particular, relates to a scissor-type disconnecting switch. With the principle of storing energy in spring, the present invention provides an energy storage spring case having energy storage spring therein, to release the spring energy to operate the disconnecting switch by using the stored energy, to satisfy the need for quick action of the electric disconnecting switch.