Help naming a particular contact type

Thread Starter

doby

Joined Aug 17, 2011
49
I'm looking for the name of a contact type that would connect an x and y axis to a continuously revolving z axis. I'm guessing it would use offset wiper contacts on the z axis wiping along 2 circular contacts on x and y but I'm having no luck with googling.

They must exist, surely?
 

djsfantasi

Joined Apr 11, 2010
6,421
A wiper on a revolving z axis, will sweep out a plane, where any line on that plane which passes through it's origin (location where the z axis passes through the plane) is orthogonal to the z axis. This likely is the plane defined by the x & y axis.

This is a long winded introduction to the question what do you mean by contacts on the x axis and y axis?
 

Thread Starter

doby

Joined Aug 17, 2011
49
I'm having real difficulty finding the right terminology to describe it, either that or I'm having a mind block!

I'll put it into a situation.. Imagine i want lights on the wheel of a car and it needs to be powered from the car battery, having a battery on the wheel itself isn't an option. I obviously cant use wires to connect between the axis and the wheel because the wheel needs to rotate more than 360 degrees. Therefore i need some sort of contact adapter(?) that will keep the lights connected whist the wheel is turning. (This isn't actually what i want to do but its the same premise).
 
Last edited:

#12

Joined Nov 30, 2010
18,210
The way I see it, you either need a slipping brush like what's inside an alternator, or an induced current made with two coils that are spaced very close to each other, like a toothbrush charger.
 
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