US 8,082,825 and US 8,336,432

And the recently issued 

US 10,684,601 5G - IoT



Introducing 21st Century Machine Tool Safety Technology

Whirlwind Tool Co. News

Whirlwind Tool Announces Black Box Patent


Whirlwind Tool 'Black Box'

Another Breakthrough in Safety

Whirlwind Tool Company founder and inventor David Butler has announced another forthcoming patent for a flesh-sensing safety device that can help prevent life-altering operator injuries from table saws and other machine tools.

Butler calls this latest device the Black Box, because it can be attached to any of millions of existing machines including most woodworking table saws and band saws. The Black Box device controls the electrical power supplied to the machine and can sense the operators flesh coming too close or in contact with a blade enclosure.  Upon sensing the danger of the operator's proximity to the spinning blade, the Black Box stops the machine in a fraction of a second without causing any damage to the machine which may be immediately restarted by the operator. The emergency stop serves as a warning and learning aid to operators of these dangerous machines.  

Whirlwind Tool business manager, Rob Calhoun said, 'This amazing device is a trailblazer in the long stagnant woodworking and related machinery industries.  We cannot keep up with answering our very encouraging website feedback, nor can we completely define the market.  Every week we seem to have a new machine application suggested or proposed to us.'

Read more: Whirlwind Tool Announces Black Box Patent


Quick-Switch: Black Box from Saw to Lathe

Flesh-sensing Safety Technology for Metal Cutting and Fabrication

We 'borrowed' a Black Box plug and play safety device from a table saw to demonstrate how the unit might be used to provide safety and emergency braking to a lathe. After shooting this demonstration video, the Black Box went back to its original table saw.  WATCH VIDEO


Flesh-sensing Safety Technology for Metal Cutting and Fabrication

Flesh-sensing Safety Technology for Metal Cutting and FabricationEffective July 2012, Whirlwind flesh-sensing technology is being used in metal cutting and fabrication.  With a simple modification to our woodworking guards we are able to cut metal on a band saw and two types of our table saws.  This opens entirely new markets for our patent assignee.  VIEW PHOTOS

This new technology creates amazing improvements in machine tool safety and we are offering to assign our cornerstone patents to industry at a low cost in order see products brought to market quickly and build a new market segment for such products.

For product development, the especially good news is that these technological safety improvements may not only be incorporated into new machines, they may also be offered for most existing machines that date back even half a century or more.

Read more: Flesh-sensing Safety Technology for Metal Cutting and Fabrication


In the Media

Whirlwind Tool featured on's All Things Considered

Striving for a Safer Table Saw

Fixing The Cutting Edge: Innovation Meets Table Saw, by Chris Arnold

Click here to view the article.


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