Continuously variable transmission
First Claim
1. An apparatus for facilitating the shifting of a roller traction continuously variable transmission, the apparatus comprising:
- a hollow shaft having a slot;
an annular member mounted on the shaft, the annular member capable of axial movement along the shaft and capable of rotation about the shaft;
first and second platforms mounted on the shaft and adapted to slide axially on the shaft, wherein the annular member is positioned between the platforms;
a sleeve that is slidingly and coaxially positioned over the shaft;
a pin contacting the sleeve through the slot; and
wherein the platforms move axially in response to axial movement of the sleeve and the pin.
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0 Petitions
Accused Products
Abstract
A continuously variable transmission is disclosed for use in rotationally or linearly powered machines and vehicles. The single axle transmission provides a simple manual shifting method for the user. An additional embodiment is disclosed which shifts automatically dependent upon the rotational speed of the wheel. Further, the practical commercialization of traction roller transmissions requires improvements in the reliability, ease of shifting, function and simplicity of the transmission. The disclosed transmission may be used in vehicles such as automobiles, motorcycles, and bicycles. The transmission may, for example, be driven by a power transfer mechanism such as a sprocket, gear, pulley or lever, optionally driving a one way clutch attached at one end of the main shaft.
199 Citations
16 Claims
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1. An apparatus for facilitating the shifting of a roller traction continuously variable transmission, the apparatus comprising:
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a hollow shaft having a slot; an annular member mounted on the shaft, the annular member capable of axial movement along the shaft and capable of rotation about the shaft; first and second platforms mounted on the shaft and adapted to slide axially on the shaft, wherein the annular member is positioned between the platforms; a sleeve that is slidingly and coaxially positioned over the shaft; a pin contacting the sleeve through the slot; and wherein the platforms move axially in response to axial movement of the sleeve and the pin. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A shifting mechanism for a continuously variable transmission having a plurality of power adjusters, each power adjuster adapted to rotate about an axis centrally located within the adjuster, the shifting mechanism comprising:
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at least one platform; and a plurality of spindle supports engaged with the platform such that the spindle supports adjust the axis of rotation of the power adjusters in response to axial movement of the platform. - View Dependent Claims (8, 9, 10, 11)
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12. A method of manufacturing a shifting mechanism for a continuously variable transmission having a plurality of power adjusters, each power adjuster adapted to rotate about a spindle that defines an axis centrally located within the adjuster, the method comprising:
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mounting on a shaft at least one platform having a convex surface; attaching at least one spindle support to the spindle of a power adjuster engaging the spindle support with the platform such that the spindle support adjust the axis of rotation of the power adjuster in response to axial movement of the platform. - View Dependent Claims (13, 14, 15, 16)
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Specification