Patents involving antenna and aerials, mainly for transmitting...

[the_big_m_in_ok]

NOTE:
Regarding the post immediately above, having each 'Web address the same(I didn't deliberately do that):

From now on, the patent number and a brief description will be all that's given:

#5,916,172
This transformer has elements of a toroid and might be used in a Joule Thief.



--Lee

[the_big_m_in_ok]

#5,939,238
I wonder what effect this thing would have on a Joule Thief?

http://www.google.com/patents?id=XbYYAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false




#3,428,886
Both Figs. 5A & 5B plus the 'prior art' Figs. might be usable in a Joule Thief:

http://www.google.com/patents?id=NIdgAAAAEBAJ&pg=PP1&dq=patent:3731237&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false
NOTE:
The number on this patent 'Web address doesn't match the patent number.  Same thing with every one below to the end.  That's the way it copied from the web browser.  I don't know why.  They give different patents when I click on them, though.

Also, 'Web addresses probably won't work if any part of it's in bold letters.  I tried with this address.




#3,305,800
Dual toroid sets in series/parallel configuration.  Try this in a Joule Thief?

http://www.google.com/patents?id=ifxxAAAAEBAJ&pg=PA2&dq=patent:3731237&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#3,114,120
Twisted wire transformer with one coil---filtering or impedance matching, mostly:

http://www.google.com/patents?id=_VpHAAAAEBAJ&pg=PA1&dq=patent:3731237&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#3,066,236
Unusual toroid wound on a bolt washer:

http://www.google.com/patents?id=U7ViAAAAEBAJ&pg=PA1&dq=patent:3731237&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#1,133,750
Both a toroid and a Caduceus coil:

http://www.google.com/patents?id=x_BmAAAAEBAJ&pg=PP1&dq=patent:3731237&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false

--Lee

[the_big_m_in_ok]

#5,619,172
Might be used with a Joule Thief.




#4,816,784
Wow.  This is generally a microwave RF balun, but can be modified to take in a pole mounted wire pattern for an antenna.
NOTE:
This holds true for just about any coax cable balun system.  The patterns are transferable to a pole or possibly a balloon.



#4,242,651
Two toroids with a 'crisscross' that causes opposing coil turns.




#3,508,171
Another complicated susytem that uses ferrite components and might find use in a Joule Thief.  Very unusual.




#3,037,175
Fig. 4 has the most detailed embodiment.  Unusual toroid.


Note:
With regard to the post above having most patent addresses the same, only the number and a description will be given in the future.

--Lee

[onthecuttingedge2005]

Hi Big M.

This is my favorite coil setup.

any patents on such coil?

[the_big_m_in_ok]

Hi Big M.
This is my favorite coil setup.
any patents on such coil?

Hey Jerry,
I remember a couple, I think, that look similar.  They would have been used mostly for tuning RF antennae or radio/radar detection section input.

And, toroids, with their unusual electrical properties figured heavily in the designs.  Only a very few were circular coils.

Occasionally, your spacecraft propulsion design descriptions crossed my mind as I researched this information.  I don't know whether any of these patents give you, or anyone else, inspirational ideas, though. 
They're here to look up for those who're interested.

Re-edit:
Here you go with an easy one:  Plauson's #1,540,998 has a circular setup mounted on suspended balloons.  It probably wouldn't work, especialy on a gusty day, but I'm sure he thought it was a good idea.
--Lee