Backlash is controlled in an opposed-piston engine that includes two crankshafts disposed in a parallel, spaced-apart relationship and a gear train coupling the first and second crankshafts, the gear train including a driving gear coupled to the first crankshaft and a split gear assembly engaged with the driving gear to transfer rotation from the driving gear to the split gear assembly. The split gear assembly includes first and second gears, a spring mechanism that acts to angularly offset the first gear relative to the second gear in a first direction, and a one-way clutch mechanism that prevents relative angular movement of the first gear relative to the second gear in a second direction opposite the first direction.

A display system for a timepiece is disclosed. The system includes a mobile arranged to be driven by a drive source by first teeth provided on the mobile. The mobile includes second teeth including a teeth module of less than 0.05 mm, the second teeth being arranged so as to drive a display member either directly or indirectly.

A display system for a timepiece is disclosed. The system includes a mobile arranged to be driven by a drive source by first teeth provided on the mobile. The mobile includes second teeth including a teeth module of less than 0.05 mm, the second teeth being arranged so as to drive a display member either directly or indirectly.

Actuator having a spindle drive (1) for a rear wheel steering system, including a spindle (2) with a spindle thread (2a) and a spindle nut (3) with a nut thread (3a). The spindle thread (2a) and the nut thread (3a) are designed as displacement threads and the spindle nut (3) threadedly engages with the axially displaceable spindle (2) by way of the displacement thread. The spindle thread (2a) and the nut thread (3a) are braced against one another, in the longitudinal direction of the spindle (2), by a bracing element (4). The bracing element (4) is in the form of a threaded ring having an internal thread (4a) which engages with the spindle thread (2a). The threaded ring (4) is supported relative to the spindle nut (3) by at least one spring element (5, 6), and the at least one spring element (5, 6) is made of an elastomer.

The present invention discloses a stage light using gears to drive a light head to rotate, which includes a light head and a driving mechanism which drives the light head to rotate. A transmission gear set for meshing transmission is provided between a drive shaft of the driving mechanism and a pivot shaft of the light head. Transmission gear set includes a first gear and a second gear. The first gear includes a first wheel and a second wheel. Gear teeth of the first wheel and gear teeth of the second wheel are misaligned with each other and meshed with the same second gear. Through transmission by the transmission gear set, there is no problem of inaccurate scanning positioning or fracture caused by deformation of a synchronous belt. Moreover, the first gear includes the first wheel and the second wheel, the first wheel or the second wheel is rotated as needed, so that the gear teeth of the first wheel and the gear teeth of the second wheel are staggered with each other, until meshing accuracy of the first gear and the second gear reaches an optimal state, and then is locked, so as to realize a precision transmission of the transmission gear set, so that when the driving mechanism drives the light head to rotate, control of a rotation angle of the light head is more accurate.

Disclosed are a precision gear transmission component and a stage light with same. The precision gear transmission component includes a first gear and a second gear which mesh with each other. First gear includes a first wheel and a second wheel. First wheel's gear teeth and second wheel's gear teeth are misaligned with each other, and meshed with second gear. Since first gear and second gear of the precision gear transmission component mesh with each other, and first gear includes first wheel and second wheel, first wheel or second wheel is rotated as needed, so that gear teeth of the first wheel and gear teeth of second wheel are staggered with each other, until meshing accuracy of first gear and second gear reaches an optimal state, and then is locked, so as to realize a precision transmission of precision gear transmission component.

Disclosed are a precision gear transmission component and a stage light with same. The precision gear transmission component includes a first gear and a second gear which mesh with each other. First gear includes a first wheel and a second wheel. First wheel's gear teeth and second wheel's gear teeth are misaligned with each other, and meshed with second gear. Since first gear and second gear of the precision gear transmission component mesh with each other, and first gear includes first wheel and second wheel, first wheel or second wheel is rotated as needed, so that gear teeth of the first wheel and gear teeth of second wheel are staggered with each other, until meshing accuracy of first gear and second gear reaches an optimal state, and then is locked, so as to realize a precision transmission of precision gear transmission component.

A rack supporting device for vehicle steering systems includes: a steering housing having a steering gear installed therein; a rack bar longitudinally inserted into the steering housing to engage with the steering gear; a tapered passage defined in an inner circumference of the steering housing, wherein the tapered passage is eccentric with an axial center of the steering housing; a rack bushing inserted between an inner circumference of the tapered passage and an outer circumference of the rack bar so that the rack bushing moves along the tapered passage and pushes the rack bar to the steering gear; and an elastic member mounted to one side of the tapered passage to provide an elastic pressing force for pushing the rack bar to the rack bushing.

An integrated gear and torsional vibration damper assembly (10, 20, 30, 30) includes a gear (11, 21, 31, 41) having a toothed portion (11a, 21a, 31a, 41a) and a torsional vibration damper (12, 22, 32, 42) supported on the gear (11, 21, 31, 41) for limited rotational and dampened movement relative to each other. The gear (11) may include a hub portion (11b), and the torsional vibration damper (12) may be supported on the hub portion (11b) of the gear (11). Alternatively, the gear (21) may include a hub portion (21b), an intermediate ring (23) may be supported on the hub portion (21b) of the gear (21), and the torsional vibration damper (22) may be supported on the intermediate ring (23). Alternatively, the gear (31) may include a toothed portion (31a) and a hub portion (31b) that extends radially inwardly from the toothed portion (31a) and has an opening (31c) extending therethrough, and the torsional vibration damper (32) may extend through the opening (31c). Alternatively, the gear (41) may include an inner circumferential surface that engages and supports an outer circumferential surface of the torsional vibration damper (41).

In order to provide a pan or tilt head and the like capable of reducing rattling or vibration when a rotation is suddenly changed while reducing the unevenness in rotational speed for smooth rotational drive, there is provided a pan or tilt head including a drive unit which rotates a camera unit in a predetermined direction, first and second gears which rotate around a predetermined rotation axis in the predetermined direction and are coaxial with the predetermined rotation axis, a third gear which meshes with the first and second gears and transmits a driving force from the drive unit, and a biasing unit which biases the second gear in the rotation axis direction, the first gear, the second gear, and the third gear includes helical gears, and the second gear is disposed to be movable in the rotation axis direction with respect to the first gear