Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1989-07-11
1991-07-02
Bartis, Anthony
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219505, 219540, 219541, 338 22R, 338 53, 392347, 392379, H05B 102, H05B 306, F24H 304, H01C 702
Patent
active
050287630
ABSTRACT:
A pair of plates of good heat and electric conductivity have a plurality of openings and a plurality of foraminous areas. The plates are secured to one another with the openings and foraminous areas of the two plates aligned with one another. The plates are connected to terminals of opposite electrical polarity and are insulated from one another. A plurality of perforated PTC thermistor elements are clamped between the plates and in electrical contact therewith. Each element is aligned with openings in the plates. The openings and foraminous areas are so disposed that the openings associated with the elements are surrounded on at least two sides by foraminous areas.
REFERENCES:
patent: 4123851 (1978-11-01), Itoh et al.
patent: 4346285 (1982-08-01), Makamura et al.
patent: 4703153 (1987-10-01), Pelonis
patent: 4876436 (1989-10-01), Ide et al.
patent: 4899032 (1990-02-01), Schwarzl et al.
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