Abstract:
A gear drive transmission comprising an output shaft (26) extending between front and rear portions of a housing (12). At the central portion of the shaft, there is a concentrically mounted drive gear section (24) engaging first and second ring gears (40, 42). A rotational and orbiting movement of the gear drive section causes rotation of a rotatably mounted ring gear to drive the shaft. There is a feedback mechanism (22) positioning and controlling movement of the shaft. The shaft can have a single output end or two output ends.
Abstract:
An apparatus for use in turning steerable vehicle wheels includes an axially movable steering member. The steering member turns the steerable vehicle wheels upon axial movement of the steering member. A connector arm connected to the steering member is movable with the steering member. A first fastener connects the connector arm to the steering member and prevents relative movement between the steering member and the connector arm. A second fastener connects the connector arm to the steering member.
Abstract:
A gear reducer, especially for a mixer, has a housing (24) supporting a pinion shaft (37) with a pinion gear (44) rotatably driven by a motor (34), mechanically coupled with a rotatable driven shaft (28) having a driven gear (42) meshing with the pinion gear (44). The driven gear (42) can be coupled, for example, to the impeller of a mixer via a vertical impeller shaft (28). The pinion shaft (37) is carrier in a cartridge (50) that is adjustably mounted to the housing (24) for moving the pinion shaft (37) toward and away from the driven gear (42) and for accommodating pinion gears (44) of different diameters to change the gear reduction ratio without the need to change the driven gear (42) on the impeller shaft (28). The cartridge (50) is pivotally mounted to the housing (24) at a point spaced from the axis of the driven shaft (28) such that the cartridge (50) and the pinion gear (44) can be rotated toward and away from the driven gear (42).
Abstract:
In one example, a portion of a transmission includes first and second sheave halves disposed on a shaft, one of which is movable along the shaft relative to the other sheave half. Three moon gears are disposed on a rotatable shaft attached to a first sled that moves along a slot defined in a sheave halve. An input shaft with a control gear is connected to the sheave halves. Three threaded shafts are provided, that each include a worm gear. The worm gear engages an index gear of a respective rotatable shaft on which a respective one of the moon gears is mounted, and each threaded shaft including a threaded shaft drive gear that engages the control gear. A shift controller is coupled to the input shaft and threaded shaft drive gears, and creates a difference in rotational speed between the input shaft and the threaded shaft drive gear.
Abstract:
In a speed reduction unit adapted for attachment to a load-bearing structure (1) of a consumer through its casing (4), and being provided with bearings (17, 18) for supporting the output shaft (14) as well as the consumer itself, the casing (4) is secured on the load-bearing structure (1) through an intervening swing mount (20; 30) making for easier self-alignment of the consumer bearing points.
Abstract:
The invention resides in a gear drive system (100) for enabling driven rotation of a first component (110) relative to a second component (120), comprising a drive gear (135), a driven gear (140) and a mounting assembly (130) for supporting the drive gear. The mounting assembly and drive gear are mounted to a reference surface (125) on one of the first and second components. The driven gear is mounted on an annular section (112) on the other of the first and second components, whereby teeth of the driven gear are in meshing engagement with teeth of the drive gear The mounting assembly comprises a mobile part (132) to which the drive gear (135) is mounted, whereby the mobile part is connected to the reference surface (125) via a linkage arrangement. The mounting assembly further comprises retaining means (137a, 137b), in fixed connection with the mobile part, which radially retain the annular section in a manner which permits rotation of the driven gear (140) and maintains a constant spacing between the meshing gear teeth. The linkage arrangement (133, 134) is adapted to constrain the mobile part (132) to one degree of freedom, such that the drive gear (135) attached to the mobile part is obliged to follow a positional variation of a centre axis (140A) of the driven gear relative to the reference surface (125).
Abstract:
An example method of controlling performance of gearbox of a gas turbine engine includes establishing a gear characteristic of a plurality of double helical gears each disposed about a respective axis in a gearbox. Performance of the plurality of double helical gears is controlled by selecting a circumferential offset distance between a first plurality of gear teeth spaced apart from a second plurality of gear teeth on each of the plurality of double helical gears in response to the established gear characteristic.
Abstract:
A drive linkage (72, 76, 78, 85, 86) is provided between a drive shaft (56) and a driven shaft, (68), each being rotated on a fixed axis. The linkage (72, 76, 78, 85, 86) includes a pair of intermediate gears (58, 60, 62) between gears (52, 64) mounted concentrically on the drive (56) and driven shafts (60) respectively, with links (72, 76, 78, 85, 86) fixing the center-to-center distances of adjacent gears and maintaining neighboring gears in driving engagement. The linkage (72, 76, 78, 85, 86) further includes a pair of control gears (82, 84), a primary control gear (82) being maintained in driving engagement with drive gear (52) through a pivotally mounted link (85), and a secondary control gear (84) linked to the primary control gear (82) and rotatably mounted to one of the intermediate gears through a pin (98) near but offset from the centers of these gears. A selective positioning of the primary control gear (82) causes an oscillation in the intermediate gear (58, 60, 62) engaged with the driven gear (64), resulting in cyclical accelerations and decelerations in the driven gear (64) responsive to a constant rotational speed in the drive gear (52). A preferred embodiment of this linkage is disclosed in connection with a four cycle internal combustion engine.
Abstract:
An example method of controlling performance of gearbox of a gas turbine engine includes establishing a gear characteristic of a plurality of double helical gears each disposed about a respective axis in a gearbox. Performance of the plurality of double helical gears is controlled by selecting a circumferential offset distance between a first plurality of gear teeth spaced apart from a second plurality of gear teeth on each of the plurality of double helical gears in response to the established gear characteristic.
Abstract:
The present invention provides an adjustable angle drive for a rotary power tool such as a drill. The adjustable angle drive includes input (19) and output (21) shafts journalled for rotation in input (18) and output (20) housings. The input and output shafts are rotatably coupled through gearing (42,44,46) and are adjustable among different angular positions.