Browse Prior Art Database

Overheating Detection Apparatus

IP.com Disclosure Number: IPCOM000096217D
Original Publication Date: 1963-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Erhardt, J: AUTHOR

Abstract

Wire made of metal having a low melting point is used in conjunction with a microswitch to detect abnormally high temperature conditions within an electronic data processing machine and to automatically deenergize the machine circuitry.

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Overheating Detection Apparatus

Wire made of metal having a low melting point is used in conjunction with a microswitch to detect abnormally high temperature conditions within an electronic data processing machine and to automatically deenergize the machine circuitry.

By way of example, the apparatus is shown in connection with a row of printed circuit cards 10 each carrying electronic circuitry. These are mounted within the electronic data processing machine, such as by being plugged into card guides and receptacles of the type shown in U.S. Patent No. 3,008,113.

The wire 11 of low melting metal encased in a sheathing is suspended above the row of cards 10 by being attached at one side to bracket 12 secured to frame member 13. The other end of wire 11 is fastened to the free end of spring 14. Upon the melting of wire 11 due to fire or abnormally high temperatures within the machine, spring 14 deflects and opens microswitch 15 to deenergize the machine. The sheathing on wire 11 retains the molten metal and prevents it from damaging the components and circuitry within the machine.

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