I have been using a certain tool in work for a number of years and after some thought I know how to modify it and make it better ..if this was a new idea for a new tool I would go ahead and patent it before anything else but my problem is that it has already been designed and used everyday and this is a modification to it...I dont want to go to the manufacturer as they may steal my idea and I get no gains out of it...can I patent the idea to a additional patented tool ??.
Also I would need a small engineering firm to modify it so how would I protect my idea so they dont use it??
Also I would need a small engineering firm to modify it so how would I protect my idea so they dont use it??