Abstract: A transmission is provided having a housing, a plurality of planetary gear sets, a structural member, a sprocket member, an annular drum, a band, and an actuator. The sprocket member is rotationally supported by the structural member. The annular drum is adjacent the structural member and is continuously rotationally coupled with a member of the one of the plurality of planetary gear sets. The band circumscribes the annular drum and includes at least a first position and a second position. In the first position the band is substantially separated from the drum and in the second position the band contacts the drum. The actuator selectively positions the band between at least the first position and the second position to transfer torque between the structural member and the annular drum.

Abstract: An automobile transmission system, comprising a planet gear interposed between the output gear and the speed differentiator of a conventional transmission device, a gliding hood is provided additionally on the outer casing of said speed differentiator, by the dynamic steering capability of the planet gear, power transmitting on the output gear assembly may be delivered by the planet gear active in direct or reverse rotation, moreover, by the displacement of the gliding hood on the outer casing of the speed differentiator the power being transmitted by the planet gear in direct or reverse rotation may be delivered way to the speed differentiator, eventually as output by way of the output shaft on the output end on both sides of the speed differentiator, thus controlling the vehicle to move forwards or backwards, with the input gear and the output gear devoted solely to take charge of speed regulation without regard to direction of vehicle movement, forwards or backwards, thus making possible structural simplif

Abstract: Reducer comprising at least one stage and associated with a nonreturn device and with an Oldham coupling. The nonreturn device consists of two tubular seats fitted one into the other and of a helical spring braking by expansion against the casing of the reducer. The Oldham cross is seated within the nonreturn device. The reducer, the nonreturn device and the Oldham coupling are seated within the casing and are retained axially in the latter by a ring capable of receiving an adapter piece for mounting the assembly in a frame. The assembly forms a compact unit which can be handled easily.

Abstract: A power transmission comprises a first coil spring wound to a casing and a first drum and having the diameter to be extended by rotation of an internal gear in one direction, a second coil spring wound to the casing and a second drum and having the same winding direction as the first coil spring and the diameter to be extended by rotation of the internal gear in the other direction, and cylinder members arranged on outer peripheries of the first and second coil springs for serving to restrict extension of the diameter of the first and second coil springs, the cylinder members being rotatable relative to the internal gear.

Abstract: A down shift mechanism for incorporation in a device such as an assembly tool includes a wrap spring which locks and releases a planetary gear speed reduction assembly to provide shifts between two drive ratios in response to torque throughput. The wrap spring is received upon a drive drum within a cylindrical housing. The ends of the wrap spring are engaged by a pair of relatively rotationally adjustable and fixable spring engaging lugs which adjust the preload of the wrap spring and thus the torque level at which the spring unwraps and lifts off the drive drum and at which the shift occurs. The wrap spring housing is coupled to the ring gear of the planetary gear assembly. When the torque applied to the wrap spring exceeds the preload, the spring unwraps, unlocking the ring gear and planetary gear assembly and downshifting to the speed reduction determined by the planetary gear assembly. An alternate embodiment of the downshift mechanism is also presented.

Abstract: An infinitely variable forward speed mechanical transmission uses asymmetric helical/spur gear trains mounted to rotate within a rotor assembly to reduce the torque output within the rotor assembly through inefficiency of the asymmetric gear trains. The rotor assembly includes integrated input and output hubs having adjacent radially flush outer control surfaces, with the output hub in mesh with the asymmetric helical/spur gear trains in mesh with an output shaft. A transmission speed control device connected to a control gear connected to a control tang of a wrap spring positioned about the control surfaces of the input and output hubs provides infinitely variable control of the relative rotation of the two hubs to selectively control the torque output of the transmission.

Abstract: A down shift mechanism for incorporation in a device such as an assembly tool includes a wrap spring which locks and releases a planetary gear speed reduction assembly to provide shifts between two drive ratios in response to torque throughput. The wrap spring is received upon a drive drum within a cylindrical housing. The ends of the wrap spring are engaged by a pair of relatively rotationally adjustable and fixable spring engaging lugs which adjust the preload of the wrap spring and thus the torque level at which the spring unwraps and lifts off the drive drum and thus the torque level at which the shift occurs. The wrap spring housing is coupled to the ring gear of the planetary gear assembly. When the torque applied to the wrap spring exceeds the preload, the spring unwraps, unlocking the ring gear and planetary gear assembly and downshifting to the speed reduction determined by the planetary gear assembly. An alternate embodiment of the downshift mechanism is also presented.

Abstract: A vertical blind construction, including slats arranged hanging on a slat carriage each, tiltably around a vertical axis, and with a driving element (1), whose direction of movement is reversible, or a gear, which can be connected by coupling elements to an endless pull cord (6) for laterally displacing the slat carriages guided in a support rail (31), and to a grooved shaft (11), which passes through a tilting gear for tilting the slats in the slat carriages. The rotatable driving element (1) in connection with a planetary gear, wherein the driving element (1) is connected to the central gear (2), whose outer ring (4) is connected by a first recording disk idling gear (5), whose idle is adjusted to a slat tilt angle of 180.degree., to a drive gear (7) or the pull cord (6) and, via an intermediate gear (10) as well as a slip clutch (13), to the grooved shaft (11). The slip clutch (13) is associated with a second recording disk idling gear (12) for a slat tilt angle which likewise corresponds to 180.degree.