On Sat, 27 May 2017 12:44:50 -0500, dpb wrote:

On 05/27/2017 12:40 PM, Leon wrote:
...

I think the big advantage Gass has is that he has a redundant system, it
works in two different ways.

How dat? I've never heard that before...

Brakes and retracts the blade.

...

I think also it is going to be difficult to get past the wording on his
patent concerning how the devise is triggered, being touched.
...

Not all patent claims are defensible...

By that logic, nothing is indefensible. The fact is that the USPTO is
considered by the courts to be the de facto expert in innovation (as
amazing as this is).