Browse Prior Art Database

Magnetically Actuated Switch

IP.com Disclosure Number: IPCOM000097341D
Original Publication Date: 1962-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Berkman, JW: AUTHOR

Abstract

Magnet 10 fixed to the end of plunger 11 is normally held in contact with pole piece 12 which is of ferromagnetic material. With the magnet 10 against the pole piece 12, the lines of flux emanating from the magnet are in such a position that they do not close the contacts of reed switch 13.

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Magnetically Actuated Switch

Magnet 10 fixed to the end of plunger 11 is normally held in contact with pole piece 12 which is of ferromagnetic material. With the magnet 10 against the pole piece 12, the lines of flux emanating from the magnet are in such a position that they do not close the contacts of reed switch 13.

Manual depression of pushbutton 14, which is attached to the other end of plunger 11, causes the magnet 10 to be positioned so that the lines of force close the contacts of reed switch 13.

Release of pressure upon pushbutton 14 permits the magnet 10 to come into contact with pole piece 12 due to the forces of attraction between the magnet 10 and pole piece 12. An extension 15 to pole piece 12 improves the return action of the magnet. This is because it increases the return force of attraction at a given distance of the magnet 10 from pole piece 12.

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