Magnetizing and demagnetizing tool

Details Magnetizing and demagnetizing tool Magnetizing and demagnetizing tool

H - Electricity

01

F

317/29

H01F 13/00 (2006.01)

Patent

CA 1095978

MAGNETIZING AND DEMAGNETIZING TOOL ABSTRACT OF THE DISCLOSURE: A magnetizable iron core is surrounded by a magnetizing solenoid coil which can be energized by 60 hertz regular house power. An article of magnetizable material to be magnetized is placed adjacent the core and the solenoid coil is energized. A normally closed dwell switch in series with the solenoid coil is activated by the magnetization of the iron core to move to an open condition to interrupt flow to the solenoid after first permitting current to flow in said solenoid coil momentarily. Upon such interruption of current flow to the solenoid, the arti- cle is magnetized. To demagnetize an article, it is put in contact with the iron core, and means is provided to override the dwell switch. The solenoid coil is continuously energized. The article to be demagnetized is then moved away from the iron core. The resulting decreasing alternating current field completely demagnetizes the article. 18 D 8

319825

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