pneumatic or hydraulic system to simulate Twist Drive

[Willy]

Quote from smoky2

"While a mechanical lever alone does not simulate this interaction
something like a pneumatic or hydraulic system may"

End of that quote

Some time in the past, there was a suggestion from someone, of using mechanical springs in place of the magnets, along with leverages.

I didn't find a way to make that work.
What are your ideas, in terms of a  pneumatic or hydraulic system ?

willy

[lancaIV]

With springs and permanent magnets :
https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=6&ND=3&adjacent=true&locale=en_EP&FT=D&date=19761116&CC=US&NR=3992132A&KC=A#

Probably other applications from the same inventor also related ,linear/around  :
https://worldwide.espacenet.com/searchResults?AB=&AP=&CPC=&DB=EPODOC&IC=&IN=&PA=William+putt&PD=&PN=&PR=&ST=advanced&TI=&bcId=1&locale=en_EP&page=0&return=true

[Willy]

A link related to this subject and of an exploration of the use of
mechanical springs in the place of magnets...

https://overunity.com/14311/work-from-2-magnets-19-output-2/msg490466/#msg490466

[sm0ky2]

If the "twist drive" were a black-box,
Given the parameters of input vs output
In both directions


Then, ANY hydraulic or pneumatic system with those parameters
would perform the same technical function


Our focus should then be on this "2nd magnetic system"

[Willy]

@Smoky2

Black boxed system

A 1 joule input for each 2.6 joules of output.
      Then in reverse.
A 2.6 joules input for each 1 joule of output.

Almost  2.8 to 1 in some instances.