Can anyone identify this Derailleur Cable Aid?

robbie23

Retro Newbie
Can anyone identify this in-line Rear Mech Cable widget? Original Owner was having trouble with water running down inside the cable housing causing problems. The Bike Shop supplier then fitted the yellow widget + an Avid Rollamajig which cured the problem. I'd love to know what the mystery item is, who made it & what its supposed to do.
 

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Someone else posted a pic of one of those a while back... and got an answer

Sadly it wasn’t me, but the answer is out there !
 
Re:

The rear mech they made looks really cool. Wonder why Shimano bought the patent but haven't done anything with it?
 
Re: Re:

ishaw":4v455cnn said:
The rear mech they made looks really cool. Wonder why Shimano bought the patent but haven't done anything with it?


There was a prototype rear mech that came up for sale about 9 months ago and posted up in the eBay section with a lengthy thread ensuing great idea but strange looking
 
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