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'[EE] INVENT Musing about high power, near-zero i'
2011\06\10@152651 by peter green

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YES NOPE9 wrote:
> I am pondering about how to make a connector that takes zero-force to insert and remove for power tools.
>
> I love the way the power cord on the Mac laptops pulls out without destroying anything.
>
> I hate all the cords that hang off my power tools.  They are hard to store and they get mangled. I would like to install connectors on my power tools on short ( 10cm ) cords or directly to the tool.  Have you considered neutrik powercons? they are circular locking and reasonably compacts. Only downsides I see are the cost and you is you have to use a seperate coupler peice when joining two cables.

They aren't designed to be connected and disconnected under load but there shouldn't be any problem disconnecting them while live but unloaded and I can't see myself wanting to disconnect the power cord from a running tool.

> The connector on the tool would have a round male housing.  There would be 3 connections.  The connector would look like a bulls eye.  #1 Hot center  #2 Neutral ring     #3 Safety ground ring   There would be ribs to prevent the mating female connector from spinning.
>
> The extension cord would have a female connector with a shroud that went around the male connector.  The shroud would have channels that mate with the male connector ribs ( not for electrical purposes ).  The female connector can be more expensive than the male connector since it is expected there will be many more males than females.  
>
> The extension cord detects when the female has been engaged or the female is being disengaged.  The extension cord powers down when it is disconnected from male connector.  #1  for safety .... stupid user can stick tongue in connector with no fear of shock.  Cord can be safely cut when not connected.   #2  to prevent burns on the connector mating surfaces.
>
> What would be good mating surfaces to use ?  Would it be possible to make the mating surfaces replaceable ?
>
> 99guspuppet
> 99zeroconnector
>

2011\06\10@163459 by Herbert Graf

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On Thu, 2011-06-09 at 21:12 -0600, YES NOPE9 wrote:
> I am pondering about how to make a connector that takes zero-force to insert and remove for power tools.
>
> I love the way the power cord on the Mac laptops pulls out without destroying anything.
>
> I hate all the cords that hang off my power tools.  They are hard to store and they get mangled. I would like to install connectors on my power tools on short ( 10cm ) cords or directly to the tool.  The connector on the tool would have a round male housing.  There would be 3 connections.  The connector would look like a bulls eye.  #1 Hot center  #2 Neutral ring     #3 Safety ground ring   There would be ribs to prevent the mating female connector from spinning.
>
> The extension cord would have a female connector with a shroud that went around the male connector.  The shroud would have channels that mate with the male connector ribs ( not for electrical purposes ).  The female connector can be more expensive than the male connector since it is expected there will be many more males than females.  
>
> The extension cord detects when the female has been engaged or the female is being disengaged.  The extension cord powers down when it is disconnected from male connector.  #1  for safety .... stupid user can stick tongue in connector with no fear of shock.  Cord can be safely cut when not connected.   #2  to prevent burns on the connector mating surfaces.
>
> What would be good mating surfaces to use ?  Would it be possible to make the mating surfaces replaceable ?

Get air tools. Only one "cord" needed for all your tools.

Benefit is the tools tend to be lighter as well, plus in some cases much
cheaper.

TTYL

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