Abstract: A windshield wiper device (10), in particular, for a motor vehicle, includes a drive (12) and a worm drive (14) with a worm (16). A worm gear (18) with a toothing (24) is provided, which includes a base body (22) on which the toothing (24) is sprayed. In addition, a method for making such a windshield wiper device is provided.

Abstract: A gearbox assembly including a housing supporting an input shaft to drive a first shaft that includes drive gears that correspond to driven gears on a second shaft. The driven gears are movable axially along the second shaft by shift levers such that a desired gear ratio can be selected. The second shaft also includes a worm shaft portion that drives a corresponding worm gear disposed on an output shaft. Another embodiment includes an input shaft driving first and second shafts. A third shaft includes two clutch assemblies with driven gears that engage drive gears of the first or second shafts. A gear on the third shaft drives a gear of an output shaft. The clutch assemblies move one of the driven gears into engagement with one of the first and second drive gears to selectively vary the speed of the output shaft.

Abstract: A gear drive casing apparatus is disclosed for enclosing a gear drive used in a hygienic and sanitary environment. The gear drive casing apparatus includes a member having an external contoured surface, the member enclosing the gear drive. A further member has a further external contoured surface, the surface and the further surface cooperating with each other to define therebetween a smooth uninterrupted intersection such that the contoured surfaces and the intersection therebetween are easily cleaned. The surfaces and intersection present a self-draining configuration which inhibits the entrapment therein of any deleterious materials that would support the growth of bacteria, fungi, mold and other microorganisms.

Abstract: A roller turret including a turret body having a plurality of mounting holes formed therein such that the mounting holes are arranged in a rotating direction of the turret body, a plurality of roller shafts each including a roller support portion and a stud portion eccentric with respect to the roller support portion and fitted in the corresponding mounting hole, a plurality of rollers rotatably mounted on the roller support portions of the respective roller shafts, and a device provided for each mounting hole, for fixing the stud portion to the turret body, at a desired angular position of the corresponding roller shaft.

Abstract: When the driving of a driving unit is stopped, a first gear and a second gear restrict the rotation of a final output gear in both directions. With this arrangement, it becomes possible to securely prevent the occurrence of rattling during rotation of a final output shaft due to backlash of the gears. Further, a unit that applies a torque of constant strength to the final output shaft becomes unnecessary. Consequently, it becomes possible to make compact a power transmission mechanism, and it also becomes possible to reduce cost.

Abstract: Motorized reduction gear intended for functional equipment of motor vehicles, such as window lifters, sunroofs or seats, comprising a rotor provided with a rotor shaft bearing a commutator and passing through a rolling bearing housed in a support of a reduction gearbox in which the said shaft is placed, and a worm of the shaft engaging with a gearwheel housed in the reduction gearbox. A seal is inserted between the bearing and the bearing support, on the side of the bearing close to the inside of the reduction gearbox. An annular housing, the profile of which is adapted to receive the seal resting on a spherical surface of the bearing, is arranged in the wall of the bearing support. The presence of the seal prevents any leak of lubricant out of the gearbox thus ensuring a better longevity of the brushes of the commutator.

Abstract: A method for manufacturing worm shafts for a gearbox. The method comprises using a common worm shaft blank to produce worm gears for all of the gear ratios of a family of gearboxes. The common worm shaft blank has a defined outer diameter. The method may comprise establishing an axial pitch to enable the worm shaft to be adapted with a thread to produce a desired gearbox ratio using the common worm shaft blank. The method may comprise adapting the common worm shaft blank to produce the worm shaft thread for the desired gear ratio. The system comprises a family of gearboxes having a plurality of gear ratios. The worm shafts for each of the gearboxes is adapted from a worm shaft produced from a common worm shaft blank. The worm shafts may all have the same outer diameter at the thread.

Abstract: A worm shaft is provided with an intermediate worm thread section between first and second end structures, wherein at least one of the first and second end structures has a coupling structure for a desired extension of a plurality of modular worm shaft extensions. The desired extension and the intermediate worm thread section are both selectable based on the desired application, the desired gearing ratio, and other features. Accordingly, the multi-component worm shaft of the present technique increases flexibility, reduces manufacturing costs, and reduces inventory.

Abstract: A transmission assembly for a ceiling-mounted TV in a vehicle has a series of gears mutually mated with each other so as to move the moving plate with respect of the fixing plate of the support. A biasing spring is added in between the series of gears so as to enable the transmission to be disengaged when the moving plate reaches a predetermined angle. A memory device is added to the transmission assembly to register the rotation angle of the moving plate and to shut down the power to the transmission assembly when the moving plate reaches a predetermined angle.

Abstract: The support body engaged with the interior side of the tooth body provided at the worm wheel of the electric power steering apparatus comprises: a corrugates cylinder part-press-formed to have a plurality of concavities on the exterior side thereof and convexities to the interior formed by the concavities which are arranged in a peripheral direction; and a plate part an exterior edge of which is united with an end of the corrugated cylinder part, wherein the tooth body is engaged with the exterior side of the corrugated cylinder part. With the method of manufacturing the gear, synthetic resin of the tooth body can be deposited uniformly on the support body made of metal engaged with the interior of the tooth body, costs can be reduced, and the support body can be engaged with the tooth body without generating voids and weld marks.

Abstract: A system for raising and lowering a sectional overhead door between an open position and a closed position including, a counterbalance system adapted to be connected to the door, an operator motor assembly mounted proximate to the sectional overhead door in the closed position of the sectional overhead door, at least a portion of the operator motor assembly movable between a door operating position and a door locking position, and a locking assembly (370) having an engaged position to hold the motor assembly in the operating position and a disengaged position to release the motor assembly allowing it to move to the door locking position. The system may be provided with a remote light assembly having a switchable light source in sensing communication with the operator motor such that operation of the motor activates the light source.

Abstract: A gearbox assembly including a housing supporting an input shaft to drive a first shaft that includes drive gears that correspond to driven gears on a second shaft. The driven gears are movable axially along the second shaft by shift levers such that a desired gear ratio can be selected. The second shaft also includes a worm shaft portion that drives a corresponding worm gear disposed on an output shaft. Another embodiment includes an input shaft driving first and second shafts. A third shaft includes two clutch assemblies with driven gears that engage drive gears of the first or second shafts. A gear on the third shaft drives a gear of an output shaft. The clutch assemblies move one of the driven gears into engagement with one of the first and second drive gears to selectively vary the speed of the output shaft.

Abstract: A C-axis driving system for machine tools is disclosed that comprises a worm wheel mounted on a spindle that is rotatably supported by a headstock. The C-axis driving system also includes a worm shaft with a worm formed therein directed perpendicular to an axis of the spindle and placed so as to be pivotable about a pivotal shaft between an engagement position, and a disengagement position. The C-axis driving system also includes a C-axis driving motor connected to the worm shaft and serving to rotationally index the spindle to a specified rotational angle. The pivotal shaft is provided on the worm shaft base so as to be directed perpendicular to an axis of the worm shaft. Thus, the C-axis driving system for machine tools is capable of reducing the size of the C-axis unit as well as the cost while allowing a smooth engagement with the worm wheel.

Abstract: An electric steering apparatus comprises an annular tooth portion and a metal boss portion fitted in the inside of the annular tooth portion. The annular tooth portion has teeth for engaging with a worm. The annular tooth portion is made of synthetic resin material mixed with fibers having a length with an aspect ratio between 100 and 800 so that the fibers are arranged preferably in a direction crossing the direction of the torque, which is applied to the teeth, thereby to heighten a fatigue strength of the teeth and the teeth root portions.

Abstract: The invention relates to a transmission-drive unit (10), which has a housing (14) with an opening (26) and with a cap (34); at least two guide lugs (36) are disposed on the cap (34) and for closing the housing (14) are thrust under ribs (29) formed on the housing.

Abstract: In an electric power steering device, a driven gear of a deceleration gear mechanism for transmitting rotation of an electric actuator for generating auxiliary steering power has a gear body made of a synthetic resin material. At least the outer periphery of a metal core ring is covered by the gear body. The gear body is molded and integrated with the core ring by injecting synthetic resin material into a mold, in which the core ring is inserted. A plurality of teeth, each of which has faces which run in the direction of the axis of rotation of the driven gear, are formed on the outer periphery of the core ring so as to be arranged at intervals in a circumferential direction. The synthetic resin material that constitutes the gear body is filled in the spaces between the teeth of the core ring.

Abstract: Improving layout characteristics of a detecting switch with respect to a control board to miniaturize an electric actuator. Switch-side connecting terminals are provided in a limit switch constituting a panel-position detecting mechanism, which is fixed to an outer face of a motor cover. Meanwhile, board-side connecting terminals having connecting portions to be terminal-connected to the switch-side connecting terminals are fixed to the control board, and the control board is disposed inside the motor cover and is fixed in a board case. By moving the limit switch toward the connecting portions, the switch-side connecting terminals and the connecting portions are connected, whereby the limit switch and the control board are connected.

Abstract: The invention concerns a gear motor (1), in particular for driving vehicle equipment, comprising a rotor provided with a rotor shaft (6), a reduction gearbox housing (14) containing a cog wheel engaged in an endless screw of the shaft and capable of driving an output member (12). The invention is characterised in that it comprises means (12) for eliminating, under predetermined axial compression (F), all axial play between one end (6a) of the rotor shaft and the housing wall (13). Said means can comprise a plug (15) housed in the housing (14) end (13) and a piston (18), inserted between the plug (15) and the shaft (6) end (6a); the plug (15) exerts on the piston (18) and the shaft (6) the axial thrust (7) which is adjusted when being mounted, and is axially locked in the corresponding position by melting the housing (14) plastic material in the grooves or recesses (19) of the piston (18) surface, then in solidifying said plastic material.

Abstract: The invention relates to a method for producing a shaft and a device containing such a shaft (22), in particular an armature shaft (22) of an electric motor drive (10), which shaft is held by at least one shaft bearing (43). It is proposed that a bearing surface (40) for guidance in a shaft bearing (42) be formed onto the shaft (22) at at least one point by means of positive displacement of material.

Abstract: An electric power steering apparatus in which steering assistance is achieved by transmitting a rotary motion of an electric motor for steering assistance to a steering shaft on which a worm wheel is mounted through a worm shaft on which a worm is mounted, wherein the worm shaft is deflectable toward the worm wheel and equipped with a biasing member biasing the worm shaft in the deflective direction thereof, or alternatively, the worm wheel is deflectable toward the worm shaft and equipped with a biasing member biasing the worm wheel in the deflective direction thereof.

Abstract: In a geared motor, a cover plate is fitted to an opening of a housing of a geared motor. The cover plate includes an output shaft hole, a rib and a short cylindrical portion. The output shaft hole penetrates through a center of the cover plate and rotatably receives an output shaft therethrough. The rib is formed along an outer peripheral edge of the cover plate and is radially supported by the housing. The short cylindrical portion is slidably engageable with an outer peripheral surface of the output shaft for radially supporting the output shaft. An inner peripheral surface of a worm wheel is slidably engageable in line contact with a sliding ridge of a disk plate of the output shaft.

Abstract: A gear for use as the pinion in a rack and pinion gear includes spur gear teeth that have an upper portion of the face cut in a worm cut so the gear is effective as a worm wheel for a worm gear while retaining involute curved faces so it is effective as the pinion for the rack. The rack, pinion, and worm driver are connected. When the worm gear connected to a shaft, power is transmitted from the shaft to the rack via the worm driver and pinion with all gears making line contact instead of point contact. This improvement turns one gear piece into two gears. The rack pinion can be geared to a worm gear while it is also matched up with a straight cut rack. In this way the gear translates force between the two different types of gears.

Abstract: A ball-worm transmission is provided which replaces the sliding friction of the classic worm mechanism with the rolling friction of spherical balls. The ball-worm transmission assembly includes a worm which defines a recirculation path, and a gear coupled to the worm via a plurality of spherical balls. The gear includes a plurality of teeth each having a thickness in a central plane of the gear and a lesser thickness towards both sides of the gear, so that a gap is defined between the teeth is larger towards both sides of the gear than in the central plane of the gear.

Abstract: An actuator with an electric motor which drives an activation element, such as a rotatable arm or a longitudinally movable rod, via a transmission. The transmission has at least two transmission stages, the first one being formed by a worm drive, the second one being formed by a crown and bevel wheel (5; 4a, 4b), the bevel wheel (4a, 4b) being driven by the worm wheel (3a, 3b), and the crown wheel (5) having a power take-off (15). The transmission may readily be formed so that the axis of the crown wheel (5) is in direct extension of the worm (2). A relatively compact transmission with a high gearing may be achieved hereby, and with worm wheel as well as crown and bevel wheel of plastics the transmission is also comparatively noiseless.

Abstract: A bearing configuration in which a shaft is supported by a first and second bearings, the second bearing being spaced from the first bearing. The first bearing and said second bearing are supported by a corresponding first bore and second bore in a shaft housing, a first axis being coincident with an axis of the first bore and a second axis being coincident with an axis of the second bore. The first axis and the second axis are purposefully offset from one another a sufficient distance to substantially eliminate internal clearance within the first bearing.

Abstract: A system for raising and lowering a sectional overhead door between an open position and a closed position including, a counterbalance system adapted to be connected to the door, an operator motor assembly mounted proximate to the sectional overhead door in the closed position of the sectional overhead door, at least a portion of the operator motor assembly movable between a door operating position and a door locking position, and a locking assembly (370) having an engaged position to hold the motor assembly in the operating position and a disengaged position to release the motor assembly allowing it to move to the door locking position. The system may be provided with a remote light assembly having a switchable light source in sensing communication with the operator motor such that operation of the motor activates the light source.

Abstract: A reducing motor including a rotor with an armature shaft, a reducer housing (2) containing a gear wheel (3) engaging a worm on the shaft, and a shock absorber (5) housed in the gear wheel and rotationally integral therewith. The unitary shock absorber has circumferential notches (8) engageable both by radial flanges 87) on the gear wheel and by elements (10) for driving an output member (11), and chamfers (90) are provided on the edges of the notches to ensure gradual torque-dependent angular deflection of the shock absorber and make it easier to mount the same automatically on the hub of the gear wheel.

Abstract: An actuator for a vent window of a motor vehicle wherein the drive mechanism interconnecting the output shaft of the motor and the pivot arm controlling the vent window comprises a first worm driven by the motor output shaft, a first worm wheel driven by the first worm, a second worm driven by the first worm wheel, and a second worm wheel driven by the second worm in driving the pivot arm. The first worm wheel is formed of a plastic material and the actuator further includes a coil spring mounted on the housing proximate the second worm wheel and operative to assist the second worm wheel in generating a sealing force sufficient to positively seal the vent window against a window seal of the motor vehicle.

Abstract: An actuator for a vent window of a motor vehicle wherein the drive mechanism interconnecting the output shaft of the motor and the pivot arm controlling the vent window comprises a first worm driven by the motor output shaft, a first worm wheel driven by the first worm, a second worm driven by the first worm wheel, and a second worm wheel driven by the second worm in driving the pivot arm. The first worm wheel is formed of a plastic material and the actuator further includes a coil spring mounted on the housing proximate the second worm wheel and operative to assist the second worm wheel in generating a sealing force sufficient to positively seal the vent window against a window seal of the motor vehicle.

Abstract: A power take-off unit for a transaxle is provided with a unique double enveloping worm/worm gear transmission which has a ratio of the number of gear teeth on the worm gear to the number of threads on the worm which is low. The worm/worm gear transmission is more compact than conventional bevel gear systems which have typically been used in power take-off unit applications. The worm and worm gear transmission of the present invention also is quieter in operation and has a higher torque capacity than standard bevel gears of comparable size.

Abstract: There is provided a worm speed change apparatus comprising a worm shaft and a worm wheel meshed therewith. Rolling elements are rotatably disposed between a raceway groove formed directly in at least one of end portions of the worm shaft, and a bearing outer ring held by a housing. The worm shaft is directly supported by the rolling elements.

Abstract: A cam mechanism incorporating a highly precise bearing structure that improves the dynamic stability of the cam mechanism's rotating output component. Relevant structures consist of a worm gear driven rotating shaft driving a rotating output shaft supported by a cross roller bearing assembly incorporating V-shaped inner and outer bearing races that sandwich and ride over a set of rollers. Of particular note is that the outer or inner bearing race may be formed as a groove machined directly into the circumferential surface of the output shaft. Because the outer bearing race is a ring-shaped structure that concentrically surrounds the rotating output shaft, the output shaft and bearing races can be machined simultaneously as a single workpiece to assure a high degree of concentricity between the shaft and bearing races.

Abstract: A differential and drive axle assembly is provided with a worm/worm gear input. The worm/worm gear input provides for a small differential and drive axle assembly while also reducing the noise and weight of the assembly.

Abstract: A pumping device in connection with saw chain lubrication, especially in connection with a hand-held device, e.g. a chain saw, the pumping device including a pumping house, a piston that is received in the pumping house and means to bring the piston to rotate and simultaneously perform a reciprocating motion in its longitudinal direction, the means including on one hand a worm pinion having means for driving cooperation with a prime mover and on the other hand a gear pinion mounted on the piston. The invention further relates to a worm pinion, preferably included in a device for saw chain lubrication. The invention is characterized in that the worm gear on one hand includes a spirally shaped element, prefabricated as a separate detail, and intended to cooperate with the gear pinion and on the other hand a sleeve shaped element that supports the spirally shaped element.

Abstract: A gear isolator assembly includes a gearbox housing, a first gear having a first axis of rotation about a first shaft and the second gear having a second axis of rotation about a second shaft. The first and second gears are rotatably mounted in a gearbox housing so that the first and second gears mesh with each other such that the first axis of the first gear is substantially perpendicular to the second axis of the second gear. The gear isolator assembly is preferably disposed within the gearbox housing about the second gear for reducing noise generated between the first and second gears during operation of the mechanism.

Abstract: A power take-off unit for a transaxle is provided with a unique double enveloping worm/worm gear transmission which has a ratio of the number of gear teeth on the worm gear to the number of threads on the worm which is low. The worm/worm gear transmission is more compact than conventional bevel gear systems which have typically been used in power take-off unit applications. The worm and worm gear transmission of the present invention also is quieter in operation and has a higher torque capacity than standard bevel gears of comparable size.

Abstract: A gear reduction mechanism includes a gearbox housing, a first gear having a first axis of rotation about a first shaft and the second gear having a second axis of rotation about a second shaft. The first and second gears are rotatably mounted in a gearbox housing so that the first and second gears mesh with each other such that the first axis of the first gear is substantially perpendicular to the second axis of the second gear. The gear isolator assembly is preferably disposed within the gearbox housing about the second gear for reducing noise generated between the first and second gears during operation of the mechanism.

Abstract: An adjusting worm for a wrench, which has a core with a hole thereof. An outer periphery of the core is provided with a spirally extending tooth. The tooth has two lateral ends respectively having substantially inwardly recessed arcs. Junctures between top ends of the two arcs and top end of the tooth respectively had a fillet such that the two top corners of the tooth are substantially smooth.

Abstract: In an electric power steering device, the rotation of an electric actuator for generating auxiliary steering power is transmitted to a vehicle wheel by way of a worm and a worm wheel. The worm wheel is molded from a synthetic resin material. The relative viscosity (VR) of the molded worm wheel is made greater than or equal to 100 and less than or equal to 300.

Abstract: The invention relates to an electric-motor drive system having a drive motor and a drive train comprising a worm gear, designed such that the overall dimensions are as small as possible and the pivot angle of rotation of the component cooperating with the output member of the drive system is as large as possible. According to the invention, the worm gear is the output member of the drive train. The worm gear has a central shaped hole for positive-fit connection to a rotatable input member of an adjustable device. The worm gear has a further gear step, preferably a worm drive, on the output side.

Abstract: An electromotive adjustment assembly, includes at least two spindles disposed in parallel spaced-apart relationship, and a motor unit coupled in driving relationship with the spindles for operating the spindles.

Abstract: The invention relates to a modular transmission that can be combined with a drive module having an output shaft. The modular transmission comprises at least one worm-gear module that can be coupled directly to the drive module output shaft by an insertable clutch and an intermediate flange. The worm shaft of the worm-gear module has clutch toothing complementary to a clutch toothing of the insertable clutch. The modular transmission may also include one or more spur-gear modules interposed between the drive module and worm-gear module. Each spur-gear module is provided with an output-side spur wheel with clutch toothing compatible with the clutch toothing of the worm shaft.

Abstract: In a drive device, especially for a sliding roof of a motor vehicle, with an electric motor (10), gearing (24) which is driven by the electric motor, and a circuit (22) for triggering the electric motor, the gearing (24) is accommodated in a gear casing (42) with at least one casing wall (50) of high thermal conductivity and at least part of the circuit (22) is located adjacent to this casing wall (50) outside of the gear casing (42). Furthermore, contact (36) is made between the components (44) of the circuit (22) and the casing wall (50) in order to dissipate the heat which forms during operation of the circuit (22) to the casing wall (50).

Abstract: To provide a speed reducer such that a driving force can always be steadily and smoothly transmitted regardless of err caused by incorrectly combining frames to form a gearbox. Furthermore, to provide an electric retractable rearview mirror capable of always steadily and smoothly turning.

Abstract: A gearbox assembly including a housing supporting an input shaft to drive a first shaft that includes drive gears that correspond to driven gears on a second shaft. The driven gears are movable axially along the second shaft by shift levers such that a desired gear ratio can be selected. The second shaft also includes a worm shaft portion that drives a corresponding worm gear disposed on an output shaft. Another embodiment includes an input shaft driving gears that engage drive gears of the first or second shafts. A gear on the third shaft drives a gear of an output shaft. The clutch assemblies move one the driven gears into engagement with one of the first and second drive gears to selectively vary the speed of the output shaft.

Abstract: A control drive according to the related art does not have a potentiometer that allows a position of the motor or the driven wheel to be registered.

Abstract: In a method of producing a resin gear, after applying a gear cutting having a gear cutting direction toward the gate forming portion onto an outer periphery surface of a resin rim layer, the gate forming portion is cut and removed.

Abstract: The axial play of a gearbox shaft (3) that meshes with a gearbox output (7) is determined by measuring the translational travel of the rotationally driven gearbox shaft (3) between the axial end stops (A1; A2) thereof while simultaneously blocking the gearbox output (7). The end stops define the axial play of the gearbox shaft (3). The commutator-dependent ripple of the motor current (IM) pertaining to the commutator motor which drives the gearbox shaft (3) in a drive unit (1; 2) is evaluated as the representative variable for the translational travel.

Abstract: An electric power steering apparatus is composed of a wheel gear connected with a steering wheel, a worm shaft tooth-engaged with the wheel gear, and an electric motor rotatably driving the worm shaft in which a worm tooth portion of the worm shaft is formed with a compound lead. Further, the worm shaft is fixed in an axial direction by at least one locknut provided at a portion of a separate side of the electric motor. Further, one end of the worm shaft is rotatably supported through a ball bearing and is fixed by the locknut in the axial direction of the worm shaft, and the other end thereof is rotatably supported through another ball bearing or is fixed by a circlip through a disc-shaped spring in the axial direction. Furthermore, only respective outer rings of the ball bearings are further secured to a housing in which the worm shaft and the wheel gear are disposed.

Abstract: There is provided an apparatus for regulating the position of an adjustably positionable vehicle part such as a window or movable roof. The apparatus includes an electric drive motor having a drive shaft which is axially displaceable within a fixed limit during driving operation of the shaft. The apparatus also includes a power transfer assembly having a driven member operatively connected to the drive shaft of the electric drive motor for driving movement thereby and a damping member for damping the axial displacement of the drive shaft of the electric motor in one axial direction. The apparatus further includes a housing having a chamber compatibly dimensioned with respect to the damping member for receiving the damping member therein in a press fit disposition.