Abstract: An electrical circuit breaker comprises a metal base having a raised step to which an elongated compensator bimetal is welded. A metal cover is secured to the base but is insulated therefrom. An elongated armature bimetal is welded to a step in the metal cover and is substantially parallel to the compensator bimetal. The high expansion sides of both the compensator and the armature face downwards, towards the base. An insulated heater wire is wrapped around the armature and is electrically connected between the armature and the base.

Abstract: A dual temperature hair curler has a hollow heat transmitting metallic barrel enclosing a pair of PTC heaters connected in series to each other and electrically insulated from the barrel by an oxide-filled silicone rubber material. The PTC heaters have different anomaly temperatures and a switch arrangement is provided for (1) energizing the higher anomaly temperature heater a series with the lower anomaly temperature heater to produce a low temperature limited by the anomaly temperature of the lower temperature heater and (2) effectively energizing only the higher anomaly temperature heater to produce a high temperature limited by the anomaly temperature of the higher temperature of the higher temperature heater by bypassing the lower anomaly temperature heater.

Abstract: A heating device adapted to be disposed in an opening in the side wall of a compressor that is used with an air conditioner or refrigerator so that fluids in the casing of the compressor can be vaporized. The heating device includes a PTC thermistor disposed in a housing and a generally cylindrical receptacle disposed about the housing. The housing includes at least one outwardly extending, resilient, heat dissipating, arcuate fin overlying the outer surface of the housing in spaced relaton thereto. The fin is biased outwardly to engage the inner walls of a receptacle. The receptacle is welded into the opening in the sidewall of the casing of the compressor. The fins form a snug fit with the housing and provide a good heat transfer contact with the receptacle. Lead-in wires extend from the PTC thermistor to the outside of the housing so that the PTC thermistor can be connected to a power supply.

Abstract: A PTC motor starting device is disclosed including a PTC resistor body having a pair of electrodes disposed on the PTC body and a lead terminal extending outwardly from each of the electrodes. A heat sink material is disposed about the PTC resistor body to absorb the heat generated by the PTC resistor body to reduce the temperature of the PTC resistor body to a temperature below the anomalous or reset temperature. A casing is disposed about the heat sink material.

Abstract: A circuit breaker formed of a PMB bimetal fastened to a post and arranged to face against a new contact that is disposed upon a U-shaped calibration bracket. A span is exposed in the U-shaped calibration bracket to enable a calibration probe to break the circuit breaker at a predetermined time to permanently bend it into a fixed position.

Abstract: A circuit breaker comprises a two piece metal enclosure, a cover and a base. Disposed within the enclosure is a PMB bimetal which is fastened to a step in the cover. The opening time of the circuit breaker can be adjusted by means of the step.

Abstract: A circuit breaker comprises a two piece metal enclosure, a cover and a base. Disposed within the enclosure is a PMB bimetal which is fastened to a step in the cover. The opening time of the circuit breaker can be adjusted by means of the step.