Electric heating – Heating devices – Resistive element: igniter type
Patent
1990-12-13
1992-12-22
Bartis, Anthony
Electric heating
Heating devices
Resistive element: igniter type
219265, 219517, 337401, 337404, 337416, H05B 102, H01H 85055, H01H 3776, B60N 300
Patent
active
051735938
ABSTRACT:
A car-borne electric cigar lighter includes a receptacle having a spring contact for receiving the heater element of the lighter for energization. A pair of spaced electrially conductive connecting plates form part of the electrical circuit to the spring contact. A circuit breakable electrically conductive spacer including a heat resistant, form-retaining resilient plate of an electrically insulating rubber, e.g., silicone rubber, penetrated between opposite surfaces with a thermally fusible, electrically conductive portion made from a low melting point metal, e.g., tin foils, to be in contact with the two connecting plates on both sides of the spacer forms an electrical connection between the plates through the tin foils. In case of overheating, the tin foils are melted down to open the electric circuit to the spring contact without losing the mechanical integrity of the spacer to serve as an insulator between the connecting plates.
REFERENCES:
patent: 2858409 (1958-10-01), Dening
patent: 3641469 (1972-02-01), Pramaggiore
patent: 3829812 (1974-08-01), Inaba
patent: 4459464 (1984-07-01), Oda et al.
Nakamura Akio
Ogino Tutomu
Bartis Anthony
Shin-Etxu Polymer Co., Ltd.
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