The present invention is a variable-ratio line gear mechanism. The mechanism forms a transmission pair consisting of a driving line gear and a driven line gear, of which axes intersect at an arbitrary angle. Transmission is generated by point contact meshing movement of line teeth between the driving line gear and the driven line gear. A contact curve of the line tooth is designed in accordance with space conjugate curve meshing theory, and the designing equation is divided into an equal transmission ratio part and a variable transmission ratio part. The equal transmission ratio part provides a uniform transmission, and the variable transmission ratio part makes the transmission ratio smoothly transit. The line gear mechanism is able to provide periodically transmission with variable transmission ratio, to provide a plurality of transmission ratios during a movement period of the driven line gear, and to enable smooth transitions between respective transmission ratios in accordance with movement rules.

A governor and inversion pump drive gear for an integrated drive generator has a gear body extending from a first end to a second end. There is an enlarged disc between the first and second ends. A boss extends from the enlarged disc toward the second end and has an internal bore with spline teeth. The enlarged disc has input gear teeth at an outer periphery. A shaft portion extends from the disc to the first end. A flange is formed at a location intermediate the first end and the enlarged disc. The inner gear teeth and the drive gear teeth have unique tooth profiles. An integrated dive generator and a method are also disclosed.

A curvilinear gear system and method for transferring force and speed through a wide range of angles is disclosed. The system can optionally incorporate curvilinear U joints to increase effective range of angles to tailor the system to specific applications. The system includes complimentary gear heads, one of which is a curvilinear gear such as a hemispherical gear. A method of using the gear systems in a transmission apparatus is also disclosed.

A curvilinear gear system and method for transferring force and speed through a wide range of angles is disclosed. The system can optionally incorporate curvilinear U joints to increase effective range of angles to tailor the system to specific applications. The system includes complimentary gear heads, one of which is a curvilinear gear such as a hemispherical gear. A method of using the gear systems in a transmission apparatus is also disclosed.

A continuously variable transmission includes a driving member rotating about a first axis, a driven member rotating about a second axis, and an intermediate member interposed between the driving and driven members and rotating about a third axis configured to intersect the first and second axes. The intermediate member transfers torque from the driving member to the driven member. A method for forming a torque transfer member includes providing a base structure, wrapping a needle assembly around the base structure such that the needles extend outwardly therefrom, and affixing the needle assembly to the base structure. A method of manufacturing a needle assembly includes forming a series of pockets on a side of a ribbon, organizing a series of needles into a series of pockets, and affixing the series of needles into the series of pockets.

The invention relates to a transmission (2) which can be switched between at least three switching stages. A transmission in accordance with the invention has a frame (6) in which a first drive shaft (4) with a first gear (12) non-rotatably mounted thereon and a second drive shaft (20) with a second gear (24) non-rotatably mounted thereon, having longitudinal axes (8, 22) disposed in parallel with one another, are rotatably mounted, and the transmission has a switching device. The first gear (12) is in the shape of a truncated cone at least in regions, with a first end (14) and a second end (16) with different numbers of teeth, and has first main teeth (30) which extend completely from the first end (14) to the second end (16) of the first gear (12). The second gear (24) is in the shape of a truncated cone at least in regions, having a third end (26) and a fourth end (28) with different number of teeth, and has second main teeth (3) which extend completely from the third end (26) to the fourth end (28) of the second gear (24). The switching device is arranged to displace one either first gear (12) and the second gear (24) in parallel and relative to the respective other gear (12, 4) into a first, a second and a third switching position. In the first switching position the first end (14) of the first gear (12) is engaged with the fourth end (28) of the second gear (24), in the second switching position the second end (16) of the first gear (12) is engaged with the fourth end (28) of the second gear (24) and in the third switching position the second end (16) of the first gear (12) is engaged with the third end (26) of the second gear (24).

A continuously variable transmission mechanism includes: a worm gear body on an input side that is formed such that a spiral pitch of a screw gear having a spiral shape and formed on a peripheral surface of a gear shaft body is gradually changed; a wheel gear body on an output side that is formed such that a meshing position where the wheel gear body meshes with the worm gear body is adjustable so as to allow the wheel gear body to mesh with the worm gear body at an arbitrary position; and an adjustment operation unit that is connected with the wheel gear body, the worm gear body, or both of the wheel gear body and the worm gear body in an interlocking manner so as to adjust the meshing position where the worm gear body and the wheel gear body mesh with each other.

A continuously variable transmission mechanism includes: a worm gear body on an input side that is formed such that a spiral pitch of a screw gear having a spiral shape and formed on a peripheral surface of a gear shaft body is gradually changed; a wheel gear body on an output side that is formed such that a meshing position where the wheel gear body meshes with the worm gear body is adjustable so as to allow the wheel gear body to mesh with the worm gear body at an arbitrary position; and an adjustment operation unit that is connected with the wheel gear body, the worm gear body, or both of the wheel gear body and the worm gear body in an interlocking manner so as to adjust the meshing position where the worm gear body and the wheel gear body mesh with each other.

A continuously variable transmission mechanism includes: a worm gear body on an input side that is formed such that a spiral pitch of a screw gear having a spiral shape and formed on a peripheral surface of a gear shaft body is gradually changed; a wheel gear body on an output side that is formed such that a meshing position where the wheel gear body meshes with the worm gear body is adjustable so as to allow the wheel gear body to mesh with the worm gear body at an arbitrary position; and an adjustment operation unit that is connected with the wheel gear body, the worm gear body, or both of the wheel gear body and the worm gear body in an interlocking manner so as to adjust the meshing position where the worm gear body and the wheel gear body mesh with each other.

A continuously variable transmission mechanism includes: a worm gear body on an input side that is formed such that a spiral pitch of a screw gear having a spiral shape and formed on a peripheral surface of a gear shaft body is gradually changed; a wheel gear body on an output side that is formed such that a meshing position where the wheel gear body meshes with the worm gear body is adjustable so as to allow the wheel gear body to mesh with the worm gear body at an arbitrary position; and an adjustment operation unit that is connected with the wheel gear body, the worm gear body, or both of the wheel gear body and the worm gear body in an interlocking manner so as to adjust the meshing position where the worm gear body and the wheel gear body mesh with each other.