[sdiy] Resonant Cavity Modeller (was Re: [sdiy] transducers)

[harrybissell]

No... just because someone patents an idea that does not necessarily
prove it
is theirs.  If you can prove 'prior art'... for instance the Sitar which
uses mechanically
driven sympathetic drone strings, you can usually beat a patent fight. I
could cost you
a bunch of money in court...    What the patent does is assure them a
day in court, and
entitles them to recover damages from you if they win...

ALSO check the patent status, often useless patents are abandoned by
their owners, who
no longer wish to pay the maintenance fees.

H^) harry

Robotboy8 at aol.com wrote:

> In a message dated 11/9/2004 10:28:59 PM Eastern Standard Time,
> sasami at hotkey.net.au writes:
>
>
>> >Basically, how feasible would it be to amp a mic signal, use that
>> to drive a
>> >very large inducer placed next to a bunch of strings tuned to
>> whatever
>> >frequencies you want to resonate the most, and have a pickup at the
>> other
>> end of the
>> >strings?  Re-tunable resonance simulator... I've ben considering
>> building such
>> >a device for a while now.
>>
>> You aren't the first to have the thought. You won't be the last. The
>> idea
>> was patented in the early 80's, which amused me, because I'd thought
>> of the
>> idea prior to that. After all, what the heck is a piano! Hold down
>> the
>> sustain pedal, and that is exactly what you have. I used to use it
>> to
>> resonate the organ which was in the same room.
>
> So it is feasible, but I shouldn't try to sell one to anybody?  I'm
> not too well versed in patent law...
>
>        -eric