Continuously variable transmission
First Claim
1. An axial force generator for a continuously variable transmission, the axial force generator comprising:
- threads operationally attached to a drive disk of the transmission; and
a screw mounted coaxially with a longitudinal axis of the transmission, the screw adapted to engage the threads;
a drive shaft mounted coaxially with the longitudinal axis, the drive shaft having a set of drive shaft ramps; and
a disk having a set of screw ramps, the disk operationally attached to the screw; and
wherein the drive shaft ramps and the screw ramps are adapted to produce an axial force that is applied to the drive disk.
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Accused Products
Abstract
A continuously variable transmission is disclosed for use in rotationally or linearly powered machines and vehicles. The transmission provides a simple manual shifting method for the user. Further, the practical commercialization of traction roller transmissions requires improvements in the reliability, ease of shifting, function and simplicity of the transmission. The present invention includes a continuously variable transmission that may be employed in connection with any type of machine that is in need of a transmission. For example, the transmission may be used in (i) a motorized vehicle such as an automobile, motorcycle, or watercraft, (ii) a non-motorized vehicle such as a bicycle, tricycle, scooter, exercise equipment or (iii) industrial equipment, such as a drill press, power generating equipment, or textile mill.
202 Citations
16 Claims
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1. An axial force generator for a continuously variable transmission, the axial force generator comprising:
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threads operationally attached to a drive disk of the transmission; and a screw mounted coaxially with a longitudinal axis of the transmission, the screw adapted to engage the threads; a drive shaft mounted coaxially with the longitudinal axis, the drive shaft having a set of drive shaft ramps; and a disk having a set of screw ramps, the disk operationally attached to the screw; and wherein the drive shaft ramps and the screw ramps are adapted to produce an axial force that is applied to the drive disk. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An axial force generation system for a continuously variable transmission, the system comprising:
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threads operationally attached to a drive disk of the transmission; a screw mounted coaxially with a longitudinal axis of the transmission, the screw adapted to engage the threads; a first set of central ramps mounted coaxially with the longitudinal axis and operationally attached to a drive shaft of the transmission; a second set of central ramps mounted coaxially with the longitudinal axis and operationally attached to the screw; wherein the drive shaft ramps and the screw ramps are adapted to produce an axial force that is applied to the drive disk; a first set of perimeter ramps mounted coaxially with the longitudinal axis and operationally attached to a bearing disk of the transmission, the first set of perimeter ramps adapted to produce an axial force that is transferred to the drive disk; and a set of ramp bearings positioned between the bearing disk and the drive disk, the ramp bearings contacting the first set of perimeter ramps. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification