Abstract: A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated in an active mode and an inactive mode. The movable reduction elements are coupled to a switching mechanism that switches the reduction elements in a predetermined manner to provide at least three-gear reduction or speed ratios.

Abstract: Method and arrangement for providing a range gearbox with planetary gear (1) for motor vehicles, intended to be connected to the output side of a basic gearbox. The ring gear (18) of the planetary gear is axially displaceable. The ring gear (18) can engage coupling rings (10, 16) alternatively. A synchronizing means (15) is intended to synchronize the rotational speed difference between the ring gear (18) and at least the coupling ring (16). The synchronizing means (15) and the coupling ring (16) are arranged coaxially outside the ring gear (18). A second means (25) for engaging the coupling ring (16) and a third means (25, 25b) for driving the synchronizing means (15) are arranged on the external side, seen radially, of the ring gear (18), and the synchronizing means (15) is arranged between the coupling ring (16) and the first means (27) for axial displacement of the ring gear (18).

Abstract: A range gearbox with planetary gear (1) for motor vehicles intended to be connected to the output side of a basic gearbox. The ring gear (18) of the planetary gear is axially displaceable. The ring gear (18) can engage coupling rings (10, 16) alternatively. A synchronizing member or member (15) is intended to synchronize the rotational speed difference between the ring gear (18) and one or other coupling ring (10, 16). The synchronizing means (15) and the coupling ring (16) are arranged coaxially outside the ring gear (18). A second member or engagement member (25) for engaging the coupling ring (16) and a third member or engagement member (25, 25b) for driving said synchronizing member (15) are arranged on the external side, as seen radially, of the ring gear (18). The coupling ring (16) is arranged between the synchronizing member (15) and the first member (27).

Abstract: A switchable gearbox of a handheld power tool has a gear having a first switching stage and a second switching stage arranged sequentially in an axial direction of the gear, wherein the gear comprises a gear arrangement movable in the axial direction of the gear between the first and second switching stages. An actuator is rotatable about an axis parallel to the axial direction of the gear. At least one shifting gate is rotatable together with the actuator wherein the shifting gate interacts with the gear arrangement for moving the gear arrangement in the axial direction. The shifting gate has a central area extending linearly and at a slant relative to a circumferential direction of the gear and end sections on each end of the central area, wherein the end sections extend parallel to the circumferential direction.

Abstract: A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated in an active mode and an inactive mode. The movable reduction elements are coupled to a switching mechanism that switches the reduction elements in a predetermined manner to provide at least three-gear reduction or speed ratios.

Abstract: Apparatus for the selective engagement and disengagement of a ring gear of a gear set in which an actuator can be displaced between a first position engaging the ring gear and a second position disengaged from the ring gear selectively by a manually operable mechanical arrangement or a fluid pressure arrangement without altering or adding to the housing or control device of the gear set. The mechanical arrangement and the fluid pressure arrangements are integrated so that the operation of the actuator can be selectively achieved either by the mechanical or fluid arrangement.

Abstract: A synchronizing arrangement in a planetary gear has an axially movable ring gear which for various gearchange positions can be coupled to either of two coupling rings, situated on their respective sides of the planetary gear, via synchronizing rings which belong to these coupling rings, are capable of limited rotation relative to the ring gear and have external locking teeth to prevent gear engagement before synchronization is achieved. The ring gear is provided with two grooves which run round its inside and each accommodates a ring-shaped locking device for transferring axial force to the respective synchronizing ring at the time of gear engagement. The respective locking device is also situated in an external groove in the relating synchronizing ring and can be compressed in the radial direction.

Abstract: An on-demand two-speed transfer case is equipped with a planetary gearset assembly and a range shift mechanism to provide high-range and low-range drive connections. The transfer case is also equipped with a dual-mode bi-directional overrunning clutch and a mode shift mechanism to establish on-demand and part-time four-wheel drive modes.

Abstract: An improved structure of a gear cluster for a bicycle having a crankset mounted with a crankshaft provided with a planetary gear module, wherein the planetary gear module includes a big wheel and a small wheel section and the planetary gear module drives an inner gear module mounted onto a gear plate, One lateral side of the crankshaft is provided with a driving structure including a second driving wheel and a third driving wheel engageable with the big and small wheels and the crankshaft is provided with a regulating structure for the positioning of the driving structure. The regulating structure includes two sets of a second and a third ratchet blocks for the positioning or free rotating of the second and the third driving wheels. The regulating structure is provided with a triggering structure to act on different ratchet block.

Abstract: Method and arrangement for providing a synchronization device that is provided in a range gear assembly within planetary gearing in a vehicle. During synchronization and gear changing, at least one spring suspension element (28, 34, 46) transmits bearing force from the clutch sleeve to the synchronization ring by means of cooperation with first recesses (32, 33, 47, 48) in the clutch sleeve (18). The clutch sleeve, clutch rings, synchronization ring and spring suspension elements are provided on one side of the ring gear (14). The synchronization ring (24, 45) is constructed together with an additional mirror-inverted synchronization ring in order to form a double synchronization ring (24, 45).

Abstract: A power transmission device that is capable of automatic speed switching according to external load is disclosed, including a frame in which a transmission mechanism and a torque feedback mechanism are received. The torque feedback mechanism includes a torque resistant member so that when the load torque is smaller than its resistant torque, the speed reduction mechanism of the transmission mechanism is retained at a first, high-speed low-torque stage. When the load torque is larger than its resistant torque, a sliding ring of the torque feedback mechanism pushes a shifting gear so that the sped reduction mechanism is shifted to a second, low-speed high-torque stage. The speed reduction mechanism automatically shifts the speed reduction mechanism when the load torque increases or reduces so that the mechanical efficiency of the transmission device can be increased.

Abstract: A switchable gearbox of a handheld power tool has a gear having a first switching stage and a second switching stage arranged sequentially in an axial direction of the gear, wherein the gear comprises a gear arrangement movable in the axial direction of the gear between the first and second switching stages. An actuator is rotatable about an axis parallel to the axial direction of the gear. At least one shifting gate is rotatable together with the actuator wherein the shifting gate interacts with the gear arrangement for moving the gear arrangement in the axial direction. The shifting gate has a central area extending linearly and at a slant relative to a circumferential direction of the gear and end sections on each end of the central area, wherein the end sections extend parallel to the circumferential direction.

Abstract: The present invention discloses a portable electric rotary power tool having a plurality of gear reduction elements connected to a motor to receive a first output torque and drive an output spindle. At least two of the gear reduction elements have a common input member and a common output member. A shift actuator is in selective communication with the two gear reduction elements, so that in a first position, these elements are each in a locked mode for providing the first output torque to the spindle. In a second position, the first is in a reduction mode and the second is in a disengaged mode for providing a second output torque to the spindle. In the third position, the first of these elements is in the disengaged mode and the second is in the reduction mode for providing a third output torque to the spindle.

Abstract: An automatic speed shifting device includes a frame having a transmission device and a torque feedback device received therein. The torque feedback device has a torque resistant member so that when the load torque is smaller than its resistant torque, the speed reduction mechanism of the transmission device is remained at the first stage speed status. When the load torque is larger than its resistant torque, a pushing wheel devices a clamp to compress a shifting gear so that the speed reduction mechanism is shifted to another stage of speed. The speed reduction mechanism of the transmission device automatically shifts the speed reduction mechanism when the load torque increases or reduces such that the mechanical efficiency of the transmission device can be increased.

Abstract: A two-stage planetary gear drive,-shifting device having an input shaft (1) which is connected with a sun gear (12) and an output shaft (2) which is connected to a planetary gear carrier (15), hollow internal gear (18), of the planetary gear drive, is form-fit, by a slide collar (19), to either a gear drive housing (3) or is coupled to the gear (12). The slide collar (19), is coaxial with the input drive shaft and is slidable into various shift positions by an electrical positioning member (31). It is proposed that the electrical positioning member (31) is an electromagnet, and an armature (33) of the electromagnet is connected, in a driving manner, with the slide collar (19).

Abstract: An on-demand two-speed transfer case is equipped with a planetary gearset assembly and a range shift mechanism to provide high-range and low-range drive connections. The transfer case is also equipped with a dual-mode bi-directional overrunning clutch and a mode shift mechanism to establish on-demand and part-time four-wheel drive modes.

Abstract: A full-time power transfer system is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling actuation of the clutch assembly in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred adaptive control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the dynamic and operational characteristics of the vehicle.

Abstract: A shifting device for a multi-speed hub for a bicycle that, comprises a hub axle, a driver, a hub sleeve and an epicyclical transmission with an annulus, a plant carrier, planet wheels and a sun wheel, a control device for changing the gear ratios between the multi-speed hub and a remote control. The gear change is executed exclusively by the lifting out or engagement of pawls which can be controlled by means of a shift unit. The shift sleeve and bushing have projections and gaps and can slide under a respective foot of the pawl thereby enabling the pawls to be forcibly disengaged. An advantage of the invention is the ability to disengage the respective pawl even under load without the need to employ relatively large control forces by means of the remote control.

Abstract: A multi-speed transmission assembly for a rotary power tool. The transmission assembly includes a plurality of transmission stages, with at least two of the transmission stages employing a movable reduction element that permits the transmission stage to be operated in an active mode and an inactive mode. The movable reduction elements are coupled to a switching mechanism that switches the reduction elements in a predetermined manner to provide at least three-gear reduction or speed ratios.

Abstract: The device according to the invention offers the advantage that by means of at least two drive positions and a neutral position of a planetary gear as a drive transmission for an electric machine, this electric machine can be used both as a starter for starting the internal combustion engine and as a generator for supplying power to an electrical system of the motor vehicle. The disposition of the electric machine connected in series with the planetary gear, for example in the drivetrain of the motor vehicle between a coupling and a manually shifted transmission preferably on a transmission input shaft, in particular has the advantage that the electric machine can remain in constant engagement without expensive devices for meshing and demeshing a conventional starter, and a control of the planetary gear based on fixed parameters can be carried out simply by means of the motor control.

Abstract: A full-time power transfer system is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling actuation of the clutch assembly in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred adaptive control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the dynamic and operational characteristics of the vehicle.

Abstract: A multiple-speed transmission wheel hub for imparting torque to a drive wheel includes a hub shell formed around a wheel axis and a clutch wheel formed around the wheel axis and axially movable between at least first and second speed positions. First gearing couples the clutch wheel to the hub shell when the clutch wheel is in the first position producing a first transmission speed. Second gearing couples the clutch wheel in the second speed position with the hub shell producing a second transmission speed. A speed-shifting cam is disposed on the axis and axially rotatable between at least first and second speed positions, with helical segments formed on a surface of the clutch wheel facing the cam, the helical segments coupling to the cam to translate rotation of the cam into axial displacement of the clutch wheel both from the second speed position to the first speed position and from the first speed position to the second speed position.

Abstract: The invention is directed to a gear arrangement for domestic use, particularly for kitchen appliances. It has an input shaft (6) at the driving end and an output shaft (20) rotatably connected to a working part at the driven end, there being arranged between the input shaft (6) and the output shaft (20) a planet gear train comprising at least one planet gear (10), a sun gear (9) meshing with said planet gear and a ring gear (15) meshing with said planet gear (10). The planet gear (10) is in meshing engagement with the input shaft (6) on the one side and in rotary engagement by way of its axle bearing (12) with the output shaft (20) on the other side.

Abstract: A transmission gear comprising a fixed gear case, a drive shaft and a driven shaft supported for independent rotation in the gear case and a planetary gear arranged between the drive and driven shafts. The planetary gear comprises a sun wheel that is nonrotatably connected with the drive shaft, a planetary wheel carrier around the sun wheel which is rotated with respect to the sun wheel, at least one planet wheel supported on the planet wheel carrier around the sun wheel and each planet wheel mates with the sun wheel to be rotated thereby. A gear rim rotates with respect to and mates with the planet wheels. An axially displaceable clutch element has a first axial position at which the clutch element couples the planet wheel carrier with the gear case in a torsionally rigid manner and has a second axial position at which the clutch element couples the planet wheel carrier with a driven shaft in a torsionally rigid manner. The clutch element comprises separated but joined together clutch wheels.

Abstract: A novel multi-speed wheel hub having a housing, an input member, including a sun gear, disposed in the housing, a planet carrier, including a plurality of planet gears, disposed about the sun gear. There is also a ring gear disposed about the planet gears. The multi-speed wheel hub includes a shifting system including a piston. A first shift ring is mechanically coupled to the piston by a plurality of first push rods and a second shift ring is mechanically coupled to the first shift ring by a plurality of second push rods. The piston activates the first and second shift rings, such that, when the first shift ring is engaged and the second shift ring is disengaged, the ring gear is locked to the housing so that a torque is transmitted from the sun gear through the planet carrier to the wheel.

Abstract: A switching device of reduction gear set is coupled to and drive by a planetary gear system for driving an output tool. The switching device includes a casing defining an interior space having an inside surface on which an internal gear is formed. The casing also defines two opposite elongate slots. A switching member is received in the casing and movable between a first position and a second position.

Abstract: A gear change for an automobile vehicle comprising a box, a main train, an input shaft of which is connected to the engine and a primary shaft of which can be connected angularly to the input shaft by a plurality of pairs of gears, and an auxiliary epicyclic gear train comprising, in turn, a sun gear angularly coupled to the primary shaft, a train carrier angularly rigid with an output shaft of the gear change and comprising a plurality of planet gears engaging with the sun gear, and an outer crown having inner teeth engaging with the planet gears, which crown can be displaced along the longitudinal axis between a first operating position in which it is coupled to the box by the engagement of a first and a second toothed wheel and a second operating position in which it is coupled to the train carrier by the engagement of a third and a fourth toothed wheel; the sun gear, the planet gears and the inner teeth of the crown comprising respective helical teeth and the first, second, third and fourth toothed wheels

Abstract: A transmission compounder assembly comprising an input shaft, an output shaft and a one-way clutch operable to establish a direct-ratio drive path between the shafts. A planetary gearset can be selectively engaged to establish a compound-ratio drive path between the shafts. The planetary gearset includes a sun gear, a ring gear fixed to the output shaft, a carrier fixed to the input shaft, and a plurality of planet gears rotatably supported from the carrier and meshed with both the ring gear and the sun gear. A band brake is provided for selectively braking the sun gear. A clutch pack is mounted between the carrier and the sun gear and can be selectively actuated to prevent relative rotation therebetween. The compounder assembly further includes a brake actuator for controlling actuation of the band brake and a clutch actuator for controlling actuation of the clutch pack.

Abstract: A device for automatic removal of milking equipment from an animal's udder, comprising a motor (1) and a removal member (3) rotatable by the motor. According to the invention, a coupling device (K) is adapted to keep the removal member (3) operably connected to the motor and to keep the removal means disconnected from the motor, respectively.

Abstract: A reversible power wrench includes a housing (10), a rotation motor, and a power transmission coupling the motor to an output shaft (21), and further includes a reduction gearing (20) with first planetary gearing (28) for transferring torque in the "forward" direction of rotation and a second planetary gearing (29) for transferring torque in the "reverse" direction of rotation. The first and second planetary gearings (28, 29) have rotationally interconnected sun gears (31, 39) and a common planet wheel carrier (34).

Abstract: A power train between the engine and the wheels of a motor vehicle has a start-up component which receives torque from the engine and transmits torque to an infinitely variable transmission through a reversible torque transmitting apparatus. The transmitting apparatus comprises at least one planetary transmission, a first clutch which can be engaged to transmit torque from the start-up component and the planet wheel carrier of the planetary transmission to an input/output element, and a second clutch which can be engaged, when the first clutch is disengaged, to connect the internal wheel of the planetary transmission to a housing for the planetary transmission. The first clutch is mounted, at least in part, on the planet wheel carrier and the second clutch is mounted, at least in part, on the internal wheel of the planetary transmission.

Abstract: A multi-speed drive hub for bicycles includes a hub shaft (1), a driver (7), a hub sleeve (9), as well as a planetary gear train (21) as part of the hub speed-changing transmission. The planetary gear train in turn has a planet gear carrier (17); at least one multistep planet gear (23); sun gears (25) meshing with the steps of the planet gear (23), which sun gears are selectively capable of being linked with the hub shaft (1) against rotation and an internal gear (11). Also provided are a coupling or clutching mechanism for coupling the driver with the planet gear carrier or with the internal gear as well as a speed-changing mechanism for the hub speed-changing transmission. In order to achieve quiet, low-wear running, the planet gear carrier (17) is mounted in a manner capable of rotation at the hub shaft on both sides of the planet gears (23).

Abstract: In a planetary gear (1) with an axially displaceable ring wheel (24), which can be coupled together with coupling rings (10,19) on either side of the planetary gear (1), synchronization rings (16,23) are arranged with external locking teeth. The ring wheel (24) is designed at its axial ends with a number of recesses (30), each accommodating locking bodies (31) which are spring-loaded in the radial direction and which bear against the synchronization rings (16,23) and which, during gear change movements, come to bear against shoulders (38) on the synchronization rings (16,23) in order to transmit axial force action to the synchronization ring (16,23) in question.

Abstract: A particularly compact planetary gear mechanism includes an axially shiftable ring gear to provide either a direct drive mode or a speed reduction ratio mode between an input sun gear thereof and an output planet carrier thereof. In a first embodiment, the ring gear is urged in a first direction by a compressible spring apparatus to a conjoint coupled relationship with the sun gear for direct drive. In a less frequently used mode the ring gear is urged by a hydraulically actuated annular piston closely encircling it into a fixed relationship with a stationary coupling in opposition to the compressible spring apparatus. A second embodiment has no spring apparatus so that the annular piston is hydraulically biased in either axial direction for positively shifting the ring gear.

Abstract: The invention relates to a range gearbox of planetary type, designed to be attached to a vehicle gearbox, a so-called base gearbox. The annulus or gear ring of the planetary gear set is non-rotatably joined to a shift sleeve, through which the annulus can be locked either to a coupling ring securely joined to the front housing end wall of the range gearbox, or to a coupling ring which is non-rotatably mounted on the input shaft of the range gearbox. The shift sleeve serves as an annulus carrier and displaces the annulus axially during the shift movement.

Abstract: A transmission is equipped with a planetary gear type transmission unit disposed between an input member and an output member within a casing. The transmission unit is comprised of a sun gear, a ring gear and a plurality of planet gears carried by a carrier coupled with the output member. The planet gears are in mesh with the sun gear and the ring gear. The input and output members are coupled with each other by bypassing the gears of the transmission unit in direct drive or via these gears in reduction ratio drive. The transmission is further provided with a first change-over member in mesh with the input member for selectively connecting the input member with the carrier in direct drive or with the sun gear in reduction ratio drive and a second change-over member secured to the first change-over member for engaging the ring gear with the casing in reduction ratio drive or disengaging the former from the latter in direct drive.

Abstract: A rotary electric tool in which a differential gear mechanism is mounted within a gear case fixed to a housing for example; projections are formed on the outer peripheral surface of an internal gear of a final planetary gear mechanism in the differential gear mechanism, the said projections being brought into engagement with a projection-formed surface of a torque adjusting cam; the internal gear and the torque adjusting cam can be changed in relative position axially by reaction force of the internal gear; and the rotation of an output shaft is changed over between high and low speed conditions according to an axial displacement of the internal gear.