Continuous variable transmission with uniform input-to-output ratio that is non-dependent on friction
OwnerRaja Ramanujam Rajendran, Prashanth Ram Rajendraninventors
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Abstract
This invention is a continuous variable transmission. This invention uses a mechanism known as “scotch yoke” principle to change the ratio of the input and output in the transmission. This invention uses a set of non-circular gears and circular gears to modify the input received from a system to deliver a steady and uniform output. It employs a unique way to change the ratio between the input and output of the transmission. Three very simple mechanisms are used to achieve changing the ratio. The option of reverse, park, and neutral gear mechanisms are integrated into this design. This invention offers a co-axial input to output feasibility.
Claims28
A continuous variable transmission comprising:
- at least one module that includes:
- an input shaft that rotates relative to a reference frame,
- an input disk, with gear profile on its perimeter, defines a slot in a radial direction is connected to the input shaft via a set of non-circular gears and through at least one substantially circular gear such that the input disk completes “R” revolution, and “R” is an integer or a reciprocal of an integer, for every revolution of the driving non-circular gear about a rotational axis relative to the reference frame, and when the input disk rotates,
- a crank pin that is caged in the slot, moves a cross rack assembly which comprises of at least one rack, one slot for the input shaft substantially parallel to the rack, and a second slot for the crank pin, substantially orthogonal to the first slot, and
- a pinion that is mounted on a pinion shaft and coupled with the rack, rotates a gear or a sprocket, via a computer controlled clutch or a one-way bearing, or a ratchet mechanism.
Dependencies are inferred from the claim text.