They probably would not even take a phone call from you unless you have a Patent to sell them and Lawyers to hash out the sale of it to them. Please remember that before you can Make and Sell such a Tool and gain profit from it THAT YOU CAN KEEP... You have to be certain that Some Other Bloke has not already considered, designed and made an Identical Version...if not a better one... than your own.
If you were to
Go Gang-Busters and Full Speed Ahead A-La John Paul Jones and just do what you want to right now... later on, you could receive a Subpoena for a Civil Lawsuit for Damages if that Bloke decided to take you..and your New Company to court, If you doubt that two people can invent an object or come up with the EXACT Idea at the very same time...
Just consider "The History of The CALCULUS".
This is an incredible story involving two Very Famous Men who somehow managed to independently, yet simultaneously create an entire New Body of Mathematics. What arose in the contemporary minds of the English Scientist, Sir Isaac Newton (
a distant relative of my Wife ...actually) and the German Philosopher Gottfried Leibniz... happened damned near on top of each other!
The two men Battled with each other for their entire lives about "Who was First to Create The Calculus?" with exchanges of scathing letters back and forth and public condemnations that were the 17th Century equivalent of having a "Public P***ing Contest".
https://www.math.uh.edu/~tomforde/calchistory.html
So like it or not... while there are any number of companies that WILL take your idea(s) willingly and perhaps eventually use them... without your having Patent and Trademarks to protect your creation...
You would never see One Thin Dime of Profit from any of these Established Tool Companies.
One last thing to contemplate... Just because you think that your idea for this "Highly Specialized Tool" is unique... without proof in the form of a United States Patent confirming your belief... you will never know if this is true. For it is their Technologists and legal Scholars that have to research whether or not this belief of yours is founded in fact... First ...as a Truly Original Idea that Solves an Original Problem. If they deem this to be so... then a Patent is awarded for a certain number of years... and if not... They will send you a Rejection Letter to that effect.