Browse Prior Art Database

Magnetic Keyboard

IP.com Disclosure Number: IPCOM000096880D
Original Publication Date: 1962-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Dixon, JO: AUTHOR

Abstract

The magnetic matrix keyboard employs flux conductors in a matrix configuration. Permanent magnets are fixed to manually operable key stems for selectively and magnetically energizing certain flux conductors for activating reed type contact switches. The magnetic matrix keyboard has a plurality of magnetic flux conductors with two conductors for each row and for each column of the matrix. Pole faces rise to a common plane at each matrix intersection.

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Magnetic Keyboard

The magnetic matrix keyboard employs flux conductors in a matrix configuration. Permanent magnets are fixed to manually operable key stems for selectively and magnetically energizing certain flux conductors for activating reed type contact switches. The magnetic matrix keyboard has a plurality of magnetic flux conductors with two conductors for each row and for each column of the matrix. Pole faces rise to a common plane at each matrix intersection.

At each matrix intersection is a key stem to which is attached a set of permanent magnets. Manual depression of any key brings the magnets fixed to it into close proximity with the corresponding pole faces at that matrix intersection. The flux follows the appropriate row and column flux conductors and closes the reed type switches located at the end of each corresponding column and row. Reed type switches close in the presence of a magnetic field.

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