Hi Brett and all,

Excellent PDF file there; thanks for sharing!

The E-Bay seller advises me that each coil is ~ 1975 ohms each; and that it
has a .4 ohm calibration
coil thereon also....perhaps some info that might not be on the patent info
and such.

Meredith Lamb

On Sat, Oct 24, 2009 at 1:20 PM, Brett Nordgren wrote:

> Hi,
>
> I have a pdf of that patent  http://bnordgren.org/seismo/us003685011.pdf which is quite detailed, so long as you don't mind reading the "patentese"
> text.
>
> Brett
>
>
>
> At 01:05 PM 10/24/2009 -0600, you wrote:
>
>> Hi all,
>>
>> The E-Bay # is 180423674973 however it was sold.  The pictures are still
>> there for viewing, if one
>> goes down the page thereon.
>>
>> However, the patent number is known, which gives
>> insight into the mechanical design for such a small instrument; to derive
>> such a long ~ 5 second period,
>> in case anybody is interested.  The patent number is 3,685,011 and it can
>> readily be seen on the Google
>> Patents search program.
>>
>
> 
>
> Watch our wiggles
> http://bnordgren.org/seismo/gif_images.htm
>
> or watch some very very good wiggles
> http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_data/ANMO_24hr.html
>
>
>
> __________________________________________________________
>
> Public Seismic Network Mailing List (PSN-L)
>
> To leave this list email PSN-L-REQUEST@.............. with the body of the
> message (first line only): unsubscribe
> See http://www.seismicnet.com/maillist.html for more information.
>
Hi Brett and all,
=A0
Excellent PDF file there; thanks for sharing!
=A0
The E-Bay seller advises me that=A0each coil is ~ 1975 ohms each; and =
that it has a .4 ohm calibration
coil thereon also....perhaps some info that might not be on the patent=
 info and such.
=A0
Meredith Lamb=A0=A0=A0=A0


On Sat, Oct 24, 2009 at 1:20 PM, Brett Nordgren =
<brett3nt@.............> wrote:

Hi,

I have a pdf of that =
patent =A0http://bnordgren.org/seismo/us003685011.pdf =A0which is quite =
detailed, so long as you don't mind reading the "patentese" t=
ext.


Brett=20



At 01:05 PM 10/24/2009 -0600, you wrote:

Hi all,

The E-Bay # is 18=
0423674973 however it was sold. =A0The pictures are still there for viewing=
, if one

goes down the page thereon.

However, the patent number is known, whi=
ch gives
insight into the mechanical design for such a small instrument;=
 to derive such a long ~ 5 second period,
in case anybody is interested.=
 =A0The patent number is 3,685,011 and it can readily be seen on the Google=


Patents search program.

<clip>

Watch=
 our wiggles
http://bnordgren.org/seismo/gif_images.htm

or watc=
h some very very good wiggles

http://aslwww.cr.usgs.gov/Seismic_Data/telemetry_da=
ta/ANMO_24hr.html=20





__________________________________________________________=


Public Seismic Network Mailing List (PSN-L)

To leave this li=
st email =
PSN-L-REQUEST@.............. with the body of the message (first line o=
nly): unsubscribe

See h=
ttp://www.seismicnet.com/maillist.html for more information.
<=
/div>