PTC devices

Details PTC devices PTC devices

1988-07-18

1989-10-24

Shaw, Clifford C.

Electric heating

Heating devices

With heating unit structure

338 22R, H05B 308

Patent

active

048764396

ABSTRACT:
A PTC device with a laminate having a PTC composition and at least two electrode plates having the PTC composition sandwiched therebetween, superposing, on the surface of each of the electrode plates of the laminate, a lead plate to be electrically connected to the electrode, joining the electrode plate and the lead plate by spot welding, and during or prior to the spot welding process, forming at least one through hole penetrating through the electrode plate and the lead plate in the center of a weld.

REFERENCES:
patent: 3748439 (1973-07-01), Ting et al.
patent: 4317027 (1982-02-01), Middleman et al.
patent: 4635026 (1987-01-01), Takeuchi
patent: 4698614 (1987-10-01), Welch

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