Abstract: A gear system 1 includes: an internal gear 12; an external gear 11; an input shaft 10 rotatably inserted into a center hole 11a formed in the external gear 11; and an anti-rotation section 19 configured to block rotation of the external gear 11. The input shaft 10 has an eccentric part 10a. The anti-rotation section 19 is formed such that the input shaft 10 is inserted into the anti-rotation section 19, and is rotatable about a center line of the input shaft 10. The gear system 1 includes: a brake 15 configured to disable movement of the anti-rotation section 19 about the input shaft 10; and a clutch system 16 configured to select one of a coupling state in which the anti-rotation section 19 and the input shaft 10 are coupled together to rotate together, and a non-coupling state in which the anti-rotation section 19 and the input shaft 10 are rotatable relative to each other.

Abstract: A micro-electromechanical system (MEMS) driving arrangement comprising a driven wheel comprising (n) teeth about an outer periphery thereof, an actuator ring around the driven wheel, itself comprising (n)+(x) teeth about an inner periphery thereof, wherein the (n)+(x) teeth of the actuator ring progressively engage and disengage subsets of the (n) teeth of the driven wheel; a driving actuation assembly, coupled to the actuator ring, for driving the actuator ring in a hysteresis-type motion so as to cause rotation of the driven wheel, wherein after one full cycle of engagements and disengagements between selective subsets of the (n) teeth of the driven wheel with selective subsets of the (n)+(x) teeth of the actuator ring, the driven wheel rotates by (x) teeth corresponding to [(360)(x)/(n)]°.

Abstract: A gear transmission comprises a crankshaft that eccentrically rotates one of an internal gear and an external gear. A first gear is attached to one end of the crankshaft. A ring gear having internal teeth meshes with the first gear. An intermediate gear meshes with external teeth of the ring gear. A second gear is attached to one end of an output shaft of a motor and meshes with the intermediate gear. The motor and the crankshaft are positioned, relative to the intermediate gear, on the same side in the axial direction of the gear transmission.

Abstract: The dial recliner includes a holder and a sector gear and also comprises a brake spring, a cam, a pair of clutch shoes and a spring which are accommodated and supported between the holder and the sector gear. The dial recliner also comprises a housing to maintain a combined state between the holder and the sector gear. The holder has inner teeth of a ring shape at its outer circular part and a boss at its center part to support a shaft. The sector gear has outer teeth to intermesh with the inner teeth of the holder. When intermeshed, the boss of the holder and a shaft hole of the sector gear become eccentric between their centers. The clutch shoe is supported by the brake spring which is elastically held around the boss of the holder so that a circular drifting movement of the clutch shoe can be prevented.

Abstract: Disclosed is a unison ring assembly. The assembly comprises a first unison ring and a second unison ring concentrically aligned along a principal axis, the first and second unison rings being rotatable about the principal axis. The assembly further comprises a gear mechanism configured to simultaneously rotate the first and second unison rings about the principal axis.

Abstract: Disclosed is a gear device which comprises an outer cylinder fixable to one of two counterpart member; a crankshaft; a carrier configured to be fixable to the other counterpart member and formed with a through-hole, wherein the carrier is adapted to be relatively rotated with respect to the outer cylinder in interlocking relation with rotation of the crankshaft; and a cylindrical body disposed in the through-hole of the carrier. The through-hole of the carrier has an inner peripheral surface formed with an outward groove. The cylindrical body has an outer peripheral surface formed with an inward groove in opposed relation to the outward groove of the carrier. The gear device is provided with an O-ring disposed to extend from an inside of the outward groove to an inside of the inward groove.

Abstract: A gear transmission includes an eccentric-oscillating-type first reduction gear unit having a first internal gear, a first crankshaft with at least one first eccentric body defined thereon, a first input gear fixed to the first crankshaft and a first output member, as well as an eccentric-oscillating-type second reduction gear unit disposed coaxially with the first reduction gear unit and surrounding the first reduction gear unit. The second reduction gear unit has a second internal gear, a second crankshaft with at least one second eccentric body defined thereon, a second input gear fixed to the second crankshaft and a second output member. The first output member is engaged with the second input gear. Further, the first internal gear is disposed, in the axial direction of the gear transmission, between the second input gear and the at least one second eccentric body.

Abstract: Disclosed herein are a decelerator in which a first deceleration unit of a planet gear type is provided inside a second deceleration unit of a cycloid type so as to apply eccentric rotation force to the second deceleration unit, and a motor brake with the same. The decelerator restricts an increase in the axial thickness of a motor and achieves an effectively increased deceleration ratio, and the motor brake equipped with the decelerator restricts an increase of the overall length thereof due to the decelerator, achieving enhanced space utility.

Abstract: A speed/torque enhancing power transmission is disclosed that translates slow rotating, high torque motion to high rotation, low torque motion or alternatively high rotating low torque motion to low rotating high torque motion and is suitable as a speed increaser for use in a device like a wind turbine. As a speed increaser the transmission has certain advantages, such as reduced weight and/or size compared to other units having the same performance characteristics. The speed increaser employs a pair of externally toothed spur gears orbiting in a non-rotating manner 180° out of phase inside an internally toothed ring gear. The input drives the ring gear and the orbiting spur gears drive separate eccentrics on the output shaft extending in opposite directions to provide dual output. In one embodiment, cross guide projections on the spur gear and cross guide projections on the housing engage slots in a swash plate.

Abstract: A wheel driving device includes: a reduction mechanism of which at least a part is disposed on an inside of a wheel; a casing; a relative rotation member rotating relative to the casing; a bearing disposed between the casing and the relative rotation member; and an oil seal sealing a space where the reduction mechanism is present, wherein an outer race of the bearing includes a main body portion of which an outer periphery is disposed on an inside of the casing, and an extending portion which extends from the main body portion in an axial direction and of which an outer periphery is exposed from the casing, and the oil seal abuts on the extending portion and the relative rotation member.

Abstract: A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.

Abstract: Drive mechanism for the conversion of oscillatory motion into rotating motion or vice versa by means of a non-circular gear train, in a system composed of arcuate pistons solidly fixed to a rotor which is able to oscillate about its axis inside a stator. The mechanism comprises a set of non-circular internal and external toothed gears coupled in a fashion similar to that of two epicyclic gearings joined by their respective planet gears, although there are not any sun gears in the present arrangement. All the gears cooperate so as to produce the sought motion conversion between the pistons and the planet carriers and the drive shaft attached thereon. Its field of application includes therefore any device that uses variable volume chambers as a means to transmit energy to, or obtain energy from, a working gas, such as compressors, pneumatic motors or internal combustion engines.

Abstract: A harmonic drive includes a housing, a first gear, a second gear, an eccentric shaft, and a power outputting unit. The first gear is fixed to the housing, and has a first number of internal teeth. The second gear is engaged with the first gear, and has a second number of external teeth. The second number is different from the first number. The eccentric shaft is coupled to the second gear for driving the second gear to eccentrically rotate relative to the first gear. The power outputting unit is coupled to the second gear for converting eccentric rotation of the second gear to rotary power.

Abstract: The invention relates to a continuously variable transmission (CVT) system, governed by an inertial mechanism that provides an additional degree of freedom, conferring dynamic properties on the transmission. The complete system includes three distinct subsystems. The first subsystem transforms the rotating movement from the driving system into a movement with oscillating angular speed and regulates the amplitude of said movement. The oscillating rotation at the output of the first subsystem is used to drive the second subsystem, which acts as a regulating element by means of the inertial mechanism. In this manner, the second subsystem acts as a torque-regulating element, providing a signal representing the oscillating angular speed at the output shaft thereof. The oscillating rotation at the output of the second subsystem is rectified in the third subsystem, thereby providing a signal representing angular speed in a single direction of rotation at the output shaft.

Abstract: A geared motor including a case body, a case cover cooperating with the case body to form a case, each of the case body and the case cover including at least three mount holes into which bolts are inserted to couple the case to a member to which the geared motor is mounted, the mount holes of the case body and the mount holes of the case cover being formed around cylindrical bores of the case body and the case cover in axial alignment with each other, and generally cylindrical collars inserted into and extending over the mount holes of the case body and the mount holes of the case cover which are axially aligned with each other.

Abstract: A micro-electromechanical system (MEMS) driving arrangement comprising a driven wheel comprising (n) teeth about an outer periphery thereof, an actuator ring around the driven wheel, itself comprising (n)+(x) teeth about an inner periphery thereof, wherein the (n)+(x) teeth of the actuator ring progressively engage and disengage subsets of the (n) teeth of the driven wheel; a driving actuation assembly, coupled to the actuator ring, for driving the actuator ring in a hysteresis-type motion so as to cause rotation of the driven wheel, wherein after one full cycle of engagements and disengagements between selective subsets of the (n) teeth of the driven wheel with selective subsets of the (n)+(x) teeth of the actuator ring, the driven wheel rotates by (x) teeth corresponding to [(360)(x)/(n)]°.

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: An eccentric oscillating gear device comprises a crankshaft 46 having an eccentric portion 46a, 46b, an externally toothed gear 48a, 48b having external teeth and a through-hole in which the eccentric portion 46a, 46b is inserted, an outer cylinder 12, and a carrier 14. The carrier 14 rotatably supports the crankshaft 46. The outer cylinder 12 has internal teeth 24 meshed with the external teeth of the externally toothed gear. The eccentric oscillating gear device is provided with rotational phase adjusting means 58 for setting an orientation of the crankshaft 46 about an axis thereof, on the basis of orientations of the outer cylinder 12 and the carrier 14 about an axis thereof.

Abstract: The invention relates to a movement transformation mechanism comprising a main planet gear (20); a planet carrier (30) which rotates together with said main planet gear (20); a ring gear (40) which is positioned at the continuation of said planet carrier (30) independent of the planet carrier (30) and which has at least an inner surface with a gear structure and a main planet gear (50) which is rotatably connected to the planet carrier (30) and whose thread is in contact with the thread on the inner surface of the ring gear (40) and whereon the rod arm (100) is hinged. In said mechanism, the diameter of said ring gear (40) is at least two times greater than the diameter of the main planet gear (50) provided that the diameter ratio is always an integer.

Abstract: When a bearing includes outer and inner rings and the outer ring is fitted to the inner periphery of an input member, which defines a center hole, with a clearance and the inner ring is fitted to an eccentric portion with a clearance, a size between a second axis and a third axis is set to a size that is smaller than or equal to half of a size obtained by adding a diameter difference between an outside diameter of the bearing and an inside diameter of the input member, which defines the center hole, a diameter difference between an inside diameter of the bearing and an outside diameter of the eccentric portion and an operating clearance of the bearing in a state where the input member has been moved to contact the housing on a line perpendicular to the second axis and a fourth axis.

Abstract: A motor unit includes a motor shaft for receiving a motor provided driving force and an auxiliary shaft for receiving an externally provided driving force. A first torque transmission path transfers the externally provided driving force to a drive mechanism and a second torque transmission path transfers the motor provided driving force also to the drive mechanism. A first one way drive is provided in the first torque transmission path between the auxiliary shaft and the drive mechanism such that when the drive mechanism is being driven by the motor provided driving force through the second torque transmission path, the auxiliary shaft is able to freewheel. The motor unit can drive any apparatus where the externally provided driving force is provided by manually operable pedals fixed for rotation with the auxiliary shaft.

Abstract: A gear transmission comprises an internal gear, an external gear, a first gear, a crankshaft, a two-stage gear and a second gear. The first gear is affixed to an end of the crankshaft, which eccentrically rotates one of the internal gear and the external gear. The two-stage gear comprises a center gear and an outer-toothed ring gear. The center gear meshes with the first gear. The outer-toothed ring gear surrounds the first gear. The second gear meshes with the outer-toothed ring gear and transmits torque from a motor to the two-stage gear. The two-stage gear is configured such that the center gear and the outer-toothed ring gear are each at least partially disposed in a common plane that crosses the rotational axis of the gear transmission.

Abstract: Adjustment fitting, in particular for a motor vehicle seat, having a first fitting part and having a second fitting part that is rotationally adjustable relative to the first fitting part about an axis of rotation, wherein the first fitting part has associated with it an outer wheel with internal teeth, in which wheel is inserted, in the manner of a wobble mechanism, an inner wheel with external teeth hat is associated with the second fitting part, and wherein the inner wheel forms a receiving space that is eccentric to the axis of rotation, and having an eccentric cam rotatably inserted in the eccentric receiving space, having a drive shaft for driving the eccentric cam. A central seal is placed in an axial gap between the two fitting parts.

Abstract: Hinge mechanism comprising first and second frames rotatably mounted relative to one another, the first frame comprising a collet, a control member rotatably mounted in the collet of the first frame and controlling a relative rotation between the two frames, and a brake unit comprising an operating member connected to the control member with angular play. The brake unit is housed in the collet of the first frame and fitted with a braking member adapted to brake the control member when the operating member is not activated and to allow the operating member to rotationally drive the control member.

Abstract: A two-speed transmission having an input shaft and an output shaft, the transmission being capable of transitioning between fixed ratios, the high-range ratio being direct 1:1 and the low-range ratio being about 2:1. The transmission is a simple lightweight, yet robust, configuration utilizing only two gear meshes, being comprised of an input gear, a cluster gear, and an output gear. The transmission is controlled with a clutch and a sprag and with the input and output shafts turning in the same direction.

Abstract: A transmission utilizing a translating gear and links to provide a high speed ratio in a small, efficient package. A gear set has an input and an output, with a speed ratio between the input and the output. The gear set has one gear that rotates and that provides a circular path for another gear. The rotational gear is attached to the input or the output. The other gear is engaged with the rotational gear and translations on a circular path. The second gear is connected with linkages to the other of the input or the output which resembles a crankshaft.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins are inserted in the through holes. An elastic member having a circular ring shape, which is formed so that an inner diameter thereof can move with respect to an outer diameter thereof, is mounted to either an inner circumferential surface of the through hole or an outer circumferential surface of the penetration pin. Thus, the through hole and the penetration pin do not interfere with each other, and thus, it is possible to set a small clearance between the through hole and the penetration pin to such a degree, while preventing a speed reducer from being in a locked state due to interference. As a result, it is possible to suppress a backlash between the through hole and the penetration pin.

Abstract: A sun gear is supported by an eccentric portion of a rotor via a bearing and rotatable eccentrically to the rotor axis. A ring gear includes inner teeth via which the ring gear is meshed with outer teeth of the sun gear. An output shaft is located adjacent to the sun gear in the axial direction. A fitted portion of the output shaft is loosely fitted to a fitting portion of the sun gear to transfer rotation of the sun gear to the output shaft. The bearing has a center position located in a fitting overlap region between the fitting portion of the sun gear and the fitted portion of the output shaft in the axial direction and/or located in a gear overlap region between the outer teeth of the sun gear and the inner teeth of the ring gear which are meshed with the outer gear.

Abstract: A speed reduction mechanism includes a bearing mechanism arranged on an axis of an output mechanism and including ball bearings that are arranged in parallel with each other in an axial direction of a differential case. The differential case is rotatably supported by the ball bearings of the bearing mechanism such that the entirety of an outer periphery of one of the ball bearings faces an inner periphery of a first housing element that accommodates the differential case and that is made of a material having a stiffness lower than a stiffness of a material of a rotation force applying member, and the entirety of an outer periphery of the other one of the ball bearings faces an inner periphery of the rotation force applying member.

Abstract: An automobile driving system includes an engine and a transmission. The transmission includes a variable gear ratio mechanism and a gear ratio of the transmission can be set to infinity. A one-way clutch is provided at an output portion of the transmission. At a time of a engine stopping controller controlling to stop the engine, a transmission-and-control device uses inertia from the engine up to an input member of the one-way clutch as assisting force for driving operations of the variable gear ratio mechanism to change the gear ratio at the transmission to infinity or close to infinity, before the engine actually stops.

Abstract: A wave generator for a wave gear device is provided with a pair of first rollers arranged in a position that is point-symmetric in relation to the center of a flexible externally toothed gear, a pair of second rollers, and a pair of third rollers. The first rollers are located on a long axis of the flexible externally toothed gear that is being flex into an ellipsoidal shape, and the second and third rollers are located in positions that are linearly symmetric in relation to the long axis between the long axis and a short axis. Support bearings of the first rollers are larger than those of the second and third rollers. The rolling fatigue life of a roller-type of the wave generator can be to be enhanced.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a cycloidal gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A gear transmission comprises an external gear and an internal gear that rotates eccentrically relative to the external gear while meshing with the external gear. At least one first recess is formed on an outer peripheral side of the internal gear so that at least a portion of a motor is disposed within the first recess, thereby shortening the length and width of the device that includes the motor and the gear transmission in the axial and radial direction, respectively.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins which are configured to extract rotation of the revolving gear are inserted in the through holes. The ring gear and the revolving gear are divided into halves in the thickness direction. Two sheets of ring gears are biased to rotate in reverse directions.

Abstract: A speed change gear device is provided with a housing, a first member supported rotatably about a predetermined rotational axis, a shaft member formed with an external gear, an annular member formed with an internal gear meshing with the external gear, and a transmission mechanism for transmitting a rotational component only of the annular member to the shaft member or a disc member arranged to be rotatable relative to the housing. The external gear differs from the internal gear in the number of teeth. Further, the first member is formed with a receiving hole that receives the annular member at a position where the center of the annular member is at a predetermined distance from the rotational axis. Then, the annular member is received in the receiving hole rotatably relative to the first member.

Abstract: An external gear has a number of teeth differing from a number of teeth of an internal gear, and is maintaining in a meshing state with the internal gear. A center through hole and an offset through hole are formed in the external gear. The center through hole is formed at the center of the external gear, whereas the offset through hole is formed at a position offset from the center of the external gear. Column-shaped member of a carrier passes through the offset through hole. A pair of supporting members of the carrier respectively supports each end of the column-shaped member. A pair of grooves is formed on a surface of a shaft of a crank member at positions between which an eccentric rotation member of the crank member is interleaved. First rolling elements and first outer races are arranged between the supporting members and the grooves. The shaft of the crank member is supported so as to be capable of rotating with respect to the carrier and incapable of moving in its axial direction.

Abstract: An apparatus for selectively activating a window treatment includes an input member, such as a pulley activated by a bead chain, an output member such as a sleeve activating a mandrel, a stationary guard for mounting the window treatment and a rotor. The rotor, pulley, and stationary base are coupled to form a cycloid drive, wherein rotation of the pulley causes the rotor to precess with respect to the pulley.

Abstract: A crankshaft has eccentric holes communicating with each other. The eccentric hole extends in the axial direction of the crankshaft from one end surface of the crankshaft and is disposed so as to be eccentric in the same direction as a cam section. The eccentric hole extends in the axial direction of the crankshaft from the other end surface of the crankshaft and is disposed so as to be eccentric in the direction of the eccentricity of a cam section. A centrifugal force due to the rotation of the crankshaft generates a force couple about an axis which is perpendicular to the axis of the crankshaft. The force couple is reduced by the eccentric holes. The cam sections are arranged around the axis of rotation with the phases shifted by 180 degrees from each other. As a result, a translational force acting in the direction perpendicular to the axis of the crankshaft is also reduced.

Abstract: Through holes are formed in a revolving gear which revolves while being engaged with a ring gear, and penetration pins which are configured to extract rotation of the revolving gear are inserted in the through holes. The ring gear and the revolving gear are divided into halves in the thickness direction. Two sheets of ring gears are biased to rotate in reverse directions.

Abstract: A gearing arrangement is disclosed herein. The gearing arrangement includes a shaft operable to rotate about an axis of rotation. The gearing arrangement also includes a first gear fixed for rotation with the shaft and encircling the axis of rotation. The gearing arrangement also includes a plate member positioned radially adjacent to the shaft. The gearing arrangement also includes a second gear operable to mesh with the first gear. The gearing arrangement also includes a layshaft supporting the second gear. The layshaft extends along a central axis between first and second ends. The layshaft is engageable with the plate member in a plurality of different positions to adjustably position the second gear relative to the first gear.

Abstract: A coaxial transmission, especially a hollow shaft drive, comprising a driving element (7) and a driven element (3), a plurality of radially mobile toothed quadrants (5) providing a gear ratio and transmitting a driving torque between the driving element (7) and the driven element (3). An internal gear (1) or especially the housing for receiving the inner gearing of the internal gear (13) are configured as a multipart structure.

Abstract: An easily structured swing internal contact type planetary gear device is proposed which can achieve a higher meshing ratio when an involute tooth profile is adapted. Each of an internal tooth of an internally toothed gear wheel and an external tooth of an externally toothed gear wheel is formed with an involute tooth profile. Under a driving condition, one of an internal tooth body of the internally toothed gear wheel and an external tooth body of the externally toothed gear wheel is elastically deformed in an extending direction and the other thereof is elastically deformed in a contracting direction so that the number of meshing teeth becomes larger than the number of meshing teeth under a non-driving condition.

Abstract: Each of reclining devices is formed so as to have a different size. An external gear wheel of each of the reclining devices has a diameter smaller than an internal gear wheel thereof and has a teeth number different from the internal gear wheel. The internal gear wheels and the external gear wheels of the connection devices respectively have the same teeth number as each other. The internal gear wheels and the external gear wheels of the connection devices are formed such that distances between centers thereof are equal to each other. Further, a meshing line of the internal gear wheel and the external gear wheel of each of the connection devices is formed between two curves defining a meshing range and is drawn as a line that extends from a side of a radially inwardly positioned curve in a circumferential direction in which the two curves are gradually spaced from each other and reaches to a side of a radially outwardly positioned curve.

Abstract: A continuously variable transmission includes a one-way clutch, a plurality of linking members, and a variable gear ratio mechanism. The one-way clutch includes an input shaft, a plurality of eccentric discs, a first crank member, a second crank member, an output member, an input member, and an engaging member. The input shaft is rotatable about an input center axial line under the rotational force. The plurality of eccentric discs is disposed around the input center axial line at equal intervals in a circumferential direction.

Abstract: Disclosed herein are a decelerator in which a first deceleration unit of a planet gear type is provided inside a second deceleration unit of a cycloid type so as to apply eccentric rotation force to the second deceleration unit, and a motor brake with the same. The decelerator restricts an increase in the axial thickness of a motor and achieves an effectively increased deceleration ratio, and the motor brake equipped with the decelerator restricts an increase of the overall length thereof due to the decelerator, achieving enhanced space utility.

Abstract: A gear device has an outer cylinder fixed to a first mating member and a crankshaft inside the outer cylinder. An external gear is mounted to an eccentric portion of the crankshaft and meshes with internal teeth of the outer cylinder. A carrier is fixed to a second mating member. Rocking rotation of the external gear rotates the carrier coaxially to the outer cylinder. A cylindrical body is inserted in an axial through-hole of the carrier. The carrier has a first portion on one end of the cylindrical body and a second portion on an axially intermediate portion of the cylindrical body. The other end of the cylindrical body extends toward a corresponding mating member while protruding axially beyond the second portion. An outer diameter of remaining portions of the cylindrical body do not exceed an outermost diameter of the portion on which the first and second portions are fit.

Abstract: Adjustment fitting, in particular for a vehicle seat, comprising a first fitting part and a second fitting part that can be rotationally adjusted relative to the first fitting part about an axis of rotation. An external gear, which has internal teeth and into which an internal gear that is associated with the second fitting part and has external teeth is inserted like an eccentric gear, is associated with the first fitting part. The internal gear forms an eccentric receiving space towards the axis of rotation. The adjustment fitting further comprises an eccentric member that is rotatably inserted into the eccentric receiving space and is equipped with a drive shaft for driving the eccentric member, and a cap for covering the open receiving space. The cap is eccentrically designed relative to the axis of rotation, penetrates into the eccentric receiving space by means of an axially downward-pulled sealing edge, and seals the receiving space as the sealing edge is preloaded in a radially outward direction.

Abstract: A reduction gear device includes a first reduction mechanism and a second reduction mechanism. The second reduction mechanism includes a crankshaft, an external gear and an internal gear. One of the internal gear and the external gear is fixed to a base part side member of a robot arm of an industrial robot, and the other of the internal gear and the external gear is fixed to an anterior end side member of the robot arm of the industrial robot. An inner diameter D of the internal gear is 140 mm?D?200 mm, torque T transmitted to the anterior end side member is 650 Nm?T?1960 Nm, and the number of teeth N of the internal gear is less than 40 times the difference in the number of teeth between the internal gear and the external gear.

Abstract: Disclosed are a decelerator configured so that a planet gear type first deceleration unit is provided inside a cycloid type second deceleration unit to provide eccentric rotational force to the second deceleration unit and a motor brake with the same. In the decelerator, the increase in axial thickness of a motor is restrained, and a deceleration ratio is effectively increased. In the motor brake with the decelerator, the deceleration ratio of the motor is increased, and the increase in total length of the motor brake is restrained by the decelerator, thereby improving space utilization.

Abstract: A gear transmission includes an eccentric-oscillating-type first reduction gear unit having a first internal gear, a first crankshaft with at least one first eccentric body defined thereon, a first input gear fixed to the first crankshaft and a first output member, as well as an eccentric-oscillating-type second reduction gear unit disposed coaxially with the first reduction gear unit and surrounding the first reduction gear unit. The second reduction gear unit has a second internal gear, a second crankshaft with at least one second eccentric body defined thereon, a second input gear fixed to the second crankshaft and a second output member. The first output member is engaged with the second input gear. Further, the first internal gear is disposed, in the axial direction of the gear transmission, between the second input gear and the at least one second eccentric body.