Temperature sensor

Claim 1

AN NTC ELECTRICAL SENSOR HAVING A VOLTAGE-ADJUSTABLE REPEATABLE RESISTANCE-BREAKDOWN TEMPERATURE, COMPRISING A METALLIC TUBE FORMING AN OUTER ELECTRODE AND A PLURALITY OF METALLIC CORES FORMING SEVERAL ELECTRODES WITHIN THE OUTER ELECTRODE WHEREBY SEVERAL PAIRS OF ELECTRODES ARE FROMED, A COMPACTED MASS OF PARTICLES LOCATED IN THE SPACED BETWEEN THE ELECTRODES, THE MATERIAL COMPOSING SAID PARTICLES BEING SELECTED FROM TE GROUP CONSISTING OF INORGANIC INSULATORS, INORGANIC SEMICONDUCTORS, CRYSTALLINE ORGANIC CONDUCTORS AND GLASS, SAID MASS OF PARTICLES SURROUNDING ALL OF SAID CORES THROUGHOUT A SUBSTANTIAL PORTION OF THE AXIAL LENGTH OF SAID TUBE, THEREBY FORMING SEVERAL VOLGATE-ADJUSTABLE CONDUCTIVE PATHS BETWEEN THE ELECTRODES, A NUMBER LESS THAN ALL OF THE PARTICLES IN THE MASS BEING SOLID-PHASE INTERATOMICALLY BONDED TO ONE ANOTHER FOR STRENGTH AND TO PROVIDE A RESISTIVITY GREATER THAN THAT OF THE RESISTIVITY OF AN EQUAL SOLID MASS OF MATERIAL, PARTICLES LYING ADJACENT TO THE INSIDE OF THE TUBE AND THE OUTSIDES OF THE INNER ELECTRODES BEING SOLID-PHASE INTERATOMICALLY BONDED THERETO RESPECTIVELY TO PROVIDE SUBSTANTIAL HOLDING STRENGTH BETWEEN ALL THE ELECTRODES AND THE MASS OF PARTICLES.