Re: Pulse Air Idea

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ludev-at-videotron.ca>

Hi jim, list,

I have some time today, I check at:

http://www.uspto.gov/

http://patft.uspto.gov/netahtml/search-bool.html

for spark gap patent and find these interesting reading:

> 3,983,438 
> 4,027,187
> 4,070,636
> 4,077,020
> 4,198,590 
> 4,280,098
> 4,296,003
> 4,329,628 
> 4,536,723 
> 4,563,608
> 4,611,142 
> 4,886,993
> 4,894,582
> 4,931,687
> 4,963,799
> 4,990,831
> 5,216,325 
> 5,450,274

Hop it could interest some of you.

Cheers,

Luc Benard

Tesla list wrote:
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
> 
> But perhaps one could use some form of vibrating whatever to generate
> nicely timed puffs.. Essentially, this would combine the aircompressor
> function with the timing function (in a rotary gap, it might be geared).
> It would also reduce the total air consumption, which might have some
benefits.
> 
> Think of how twostroke motors use the crankcase to compress the intake air
> charge.
> 
> And, for a more novel implementation, consider that an acoustic resonator
> can generate quite strong pulses of air. One could actually use the heated
> air from the spark gap to excite the resonator, which in turn generates
> puffs to quench. Imagine, for instance, that you have your gap at the open
> end of a tube.  The pressure pulse from the spark propagates up the tube,
> reflects back down from the open end (or a closed end, for that matter),
> and arrives just in time to puff out the next spark.  The resonant
> frequency of the tube would need to be the same as the break rate for this
> to work.  With a suitable resonator, with really high Q, and good design,
> one might be able to get really high air velocities.  For what it's worth,
> the tube would need to be fairly long for typical breakrates.  at 1000
> ft/sec for sound in air, and break rates of 120 Hz (8.33mSec), you'd need
> tubes around 4 feet long
> 
> Another approach is some form of Rijke tube resonator.
> 
> There you go then, a double tuned electrical resonator, with an impulse
> excitation using an acoustic resonator.
> 
> Tesla list wrote:
> >
> > Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Gary.Lau-at-compaq-dot-com>
> >
> > With static gaps, folks often have substantial, constant airflow, to _help_
> > quenching.  I don't think that turning the airflow off between bangs will
> > provide any improvement, and will certainly diminish the cooling of the
> > electrodes.
> >
> > Gary Lau
> > MA, USA
> >
> > Cory Roussel wrote:
> >
> > > perhaps we could quench a gap at a
> > > certain set frequency by connecting a high quality,
> > > well lubricated solenoid to a small plate