Patent number

[oldhat]

Hi all.
I am look for a Patent number, downloaded it now can not find it.
It showed a magnet and (nickel iron? rod) on the rod 11 coils, one coil next to magnet to pinch off the magnetic filed the other 10 coils to take off the power.

New to site hope not in wrong place.

Bill

[Faraday88]

Hi Old hat,

Inventor Name..? Invention title?...this would make the search easier..
Rgds,
Faraday88.