Abstract: A gear reducer with a first center sprocket having a first number of teeth and second center sprocket having a second number of teeth are mechanically coupled by a rotor including a plurality of sprockets, wherein minimal inertial mass is overcome while changing the direction of a driven sprocket.

Abstract: A solar energy system includes a photovoltaic (PV) assembly and a drive system. The PV assembly comprises a support subassembly and an array of PV panels pivotable therewith about a longitudinal axis of the PV assembly. The drive system comprises a motor assembly comprising an electric motor and a gearing arrangement, and a pivot wheel comprising a hoop-portion and joined to the PV assembly. The hoop portion includes an outer circumferential channel, and two opposing catches defining a maximum pivot range. A chain resides partly within the circumferential channel, is engaged with the two opposing catches, and is also in geared communication with the motor assembly such that the motor is operable to rotate the pivot wheel. In some embodiments, the opposing catches define a maximum pivot range through an arc of more than ? radians and less than 2? radians.

Abstract: In order to improve linear drives on aircraft with regards to backlash, gear reduction, self-lock capability, load transfer and wear, a linear drive device is provided that has a first member with engaging teeth, such as a tooth rack and a second member which functions as a drive unit. The second member includes a plurality of movable teeth that are actuated by a cam shaft. The cam shaft has a control cam portion that is shaped such that the movable teeth perform a wave-like motion that forces the first member along its longitudinal direction relative to the second member.

Abstract: The present invention provides a transmission mechanism which is suited to miniaturization and can reduce motion transmission errors. This transmission mechanism includes: a cam; a plurality of pins arrayed along a side surface of the cam; guide plates provided with a plurality of guide holes; and a pair of gears disposed so as to sandwich the cam. Each pin contacts only one of the pair of gears, and is guided to the corresponding guide hole in conjunction with the rotation of the cam and moves along the cam and the corresponding gear, thereby causing the guide plates or the pair of gears to rotate with respect to the cam.

Abstract: A gearing, in particular a coaxial gearing or a linear gearing, comprising a tooth system, a tooth carrier having guides, teeth received within the guides for engagement with the tooth system, wherein the teeth are mounted within the guides to be displaceable in the direction of their longitudinal axis relative to the tooth carrier, a cam disk for driving the teeth along the respective longitudinal axis of the teeth, wherein at least one of the teeth respectively has a tooth flank area having tooth flanks, and a tooth body, wherein, between the tooth body and the tooth flanks, one shoulder respectively is provided, which projects back from the tooth body to the inside towards the tooth flank.

Abstract: A harmonic drive has an outer gear, an elliptical follower hub, and an outer chain coupled to the follower hub, and having teeth that mate with the outer gear. Preferred embodiments further include an inner chain disposed such that the follower hub is functionally interposed between the inner and outer chains.

Abstract: A lantern-type gear unit, in particular for a camshaft adjuster, comprising at least two meshing gear wheels, a first gear wheel being configured as a lantern gear wheel and a second gear wheel including a lantern gear ring that engages with the lantern gear wheel. The lantern gear ring comprises at least one first annular bolt holder and a plurality of bolts arranged on the boundary of the bolt holder. The annular bolt holder has, together with the bolts, a circumferential contour that is overlap-free with respect to the lantern gear wheel in an axially parallel direction, so that the annular bolt holder can, together with the bolts, be assembled with the lantern gear wheel in an axially parallel direction. A camshaft adjuster for an internal combustion engine comprising such a lantern-type gear unit is also provided.

Abstract: A harmonic drive has an outer gear, an elliptical follower hub, and an outer chain coupled to the follower hub, and having teeth that mate with the outer gear. Preferred embodiments further include an inner chain disposed such that the follower hub is functionally interposed between the inner and outer chains.

Abstract: In a gearing, in particular coaxial gearing, hollow shaft gearing, hypoid gearing, axial gearing or linear gearing, with a driving element (7), an element (3) and an output element (11), a stepping-up and transmission of a driving torque between driving element (7) and output element (11) are to take place via a plurality of movable tooth segments (5).

Abstract: A vehicle has a motor-gear unit, a trailing wheel of the vehicle being connected the output shaft of the gear and an input shaft of the gear being connected to a motor. The gear has an outer wheel, an inner wheel and a traction means extending between the outer wheel and the inner wheel. A revolving transmitter is also provided which lifts the traction means off the outer periphery of the inner wheel and pushes it against the inner periphery of the outer wheel.

Abstract: The present invention is structured by using one or both of an active wheel and a passive wheel being composed of an eccentric transmission wheel and being combined with a synchronous transmission belt for forming an eccentric wheel transmission wheel series, so that in the reciprocal treadle performed by the human's feet, when the feet input forces at different angles from the treadle shafts of the treadles to an active wheel shaft combined on the active wheel through cranks, the active wheel forms different transmission speed ratios relative to the passive wheel according to the treadle angle.

Abstract: The present invention includes a compact drive system comprising a housing, a motor, a worm screw, a first gear, an internal gear, a second gear and an output gear. The motor is supported relative to the housing and the worm screw is driven by the motor. The first gear rotates about a central axis and is driven by the worm screw to provide a first gear reduction. The first gear has a hub offset from the central axis. The internal gear mounts relative to the housing and has a predetermined number of internal teeth. The second gear has an aperture which is driven by the eccentric hub as the eccentric hub rotates. The internal teeth cooperate with the external teeth so that the second gear orbits within the internal gear when driven by the eccentric hub to provide a second gear reduction. An output gear rotates about the central axis and is supported relative to the housing.

Abstract: The invention is a drive for transducing rotation of a motor shaft having a multiple eccentric journal having a hollow sized to fit over the motor shaft and at least one pair of journals, each member of a pair being concentric with an axis parallel to the axis of the hollow and spaced apart from its mate an equal distance on opposite sides of and coplanar with a hollow axis. The eccentric journal is secured to the motor shaft and a rotational bearing is attached to each journal. Associated with each bearing is a transmission wheel having means for mounting the wheel to the bearing eccentrically with respect to the transmission wheel an equal radial amount from the axis of rotational symmetry of each transmission wheel as compared to the other transmission wheel. The invention provides a high ratio, single stage transmission with few moving parts, and without complicated case, lubrication or torque arms.