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A place to ask general spud cannon related questions.
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Unread postAuthor: jimmy101 » Wed Aug 05, 2009 5:10 pm

D_Hall wrote:
jimmy101 wrote:Of course, Hubb could also claim his book as a "scholarly work" (which I would say is correct). That would exempt it from patent infringement considerations. Any patented device can be described by anyone who wants to without infringing the patent.

True... Right up to the moment you actually build one.

Perhaps, though even that is generally protected under the "scholarly research" clause. It is when you sell the construct that you really have to worry about patent infringement.

As far as I know, and at all the "intellectual property" companies I've worked at, you can reduce someone else's patent to practice without that being considered infringement if it is for research purposes. Drug companies routinely make competitors drugs for in-house testing. They even publish the results, without patent infringement issues. As long as the drug isn't sold then you are generally OK.

Hubb: Original topic discussing this very thing.....4 pages of topic
I thought this all was familar. :P

Hmmm, take a compression T and insert a suitable diameter piece of fishing line into the sidearm in place of the ball detent, then seal the sidearm. The fishing line extends down the barrel for perhaps 1/2 inch. BB jambs on the piece of fishing line until pressure is high enough ... pop, out goes the BB. As the fishing line wears just slide more in through the T's sidearm.
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