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Friction based ivts that don't require an epicyclic gear system.

Friction based ivts that don't require an epicyclic gear system.

(OP)
I have imagined an infinitely variable transmission (ivt) design and wish to clarify if it is something new.

It is a dynamic friction-based continuously variable transmission (cvt) that can go seamlessly to geared neutral without an epicyclic gear system and it is practical for larger torque, than conventional friction based cvts.

I have yet to find a patent for it after a few weeks of searching.

My preliminary internet research identifies the ivt types of: hydraulic, roller clutch, ratchet, and [a cvt + epicyclic gear system].

I am wondering if anyone is aware of friction based cvts that don't require an epicyclic gear system for the geared neutral?

Like everyone I don't want to re-develop something known.
Regards,

IVT meaning " range of ratios of output shaft speed to input shaft speed includes a zero ratio that can be continuously approached from a defined "higher" ratio."

RE: Friction based ivts that don't require an epicyclic gear system.

I certainly don't know of a friction IVT system that doesn't rely on epicyclic gearing for its "geared neutral".
 Without further details I think you will have trouble convincing people that a friction IVT can handle "larger torque".

RE: Friction based ivts that don't require an epicyclic gear system.

(OP)
Hi Yves,

Appreciate the feedback.  I will proceed with its development.

Details are sparse because I have yet to file for patent protection.

Regards,  

RE: Friction based ivts that don't require an epicyclic gear system.

Have a look at this site:
http://cvt.com.sapo.pt/toc_en.htm
There is a lot of information here - especially in the links.

RE: Friction based ivts that don't require an epicyclic gear system.

(OP)
Gracias Yves for the reference.

I am looking forward to learning from its content.

Regards,

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