Gte Products Corporation

Gte Sylvania Incorporated

Robert L Ekowicki

Richard C Watson

An overtemperature protector for an incandescent lamp socket housing comprises a glass enclosed circuit breaker and an electrical heater in proximate heat transfer relationship therewith. The heater is in series with the circuit breaker so that when the circuit breaker is open, there can be no current flow through the heater.

Overtemperature protector for incandescent lamp

A controlled cycling thermal protector device is provided comprising a snap blade and a PTC resistive heater disposed outside of a bulbous envelope in which the snap blade thermal protector is housed. The snap blade thermal protector and the resistive PTC heater are wired and constructed so as to prevent cycling of the snap blade thermal protector. The PTC heater is disposed upon a sleeve which encircles the bulbous envelope so as to radiate heat onto the snap blade thermal protector to keep it open once the circuit has been broken.

Controlled cycling thermal protector

The thermistor assembly comprises a thermistor disc disposed within a closed ceramic container which has a support arm fastened thereto.

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Westbrook, ME, United States of America

Robert L Ekowicki