Ceramic coated electric heater assembly for tools

Details Ceramic coated electric heater assembly for tools Ceramic coated electric heater assembly for tools

1981-06-16

1984-03-20

Bartis, A.

Electric heating

Heating devices

Tool or instrument

29618, 29619, 219238, 219541, 219544, 228 51, 338264, 338275, 338302, 338331, H05B 340, B23K 302, H01C 1148

Patent

active

044383223

ABSTRACT:
An electric heater assembly for tools having a removable heated tip includes a tubular metal base having an open end adapted to removably receive and hold the end of the tool tip. A coating of ceramic electrical insulation material is provided on a portion of the exterior of the base and a length of Nickel-Iron alloy resistance wire is wound on the ceramic coated portion. Electrical lead wires are connected in lapped relationship to the respective ends of the resistance wire. Each lead wire includes a first portion lying between several turns of resistance wire and the ceramic coating on the base and a second portion bent back and overlaying the several turns of resistance wire. The second portion is wrapped with at least one additional turn of the resistance wire. A coating of ceramic electrical insulation material is provided over the resistance wire and the terminals to seal the same from the deliterious effects of the atmosphere.

REFERENCES:
patent: 1407722 (1922-02-01), Braun
patent: 1800688 (1931-04-01), Kebler
patent: 1903045 (1933-03-01), Hodges
patent: 1974302 (1934-09-01), Finlayson
patent: 1994994 (1935-03-01), Hampton
patent: 2056951 (1936-10-01), Bohall et al.
patent: 2761946 (1956-09-01), Bronstein
patent: 2832875 (1958-04-01), Norton
patent: 3248680 (1966-04-01), Ganci

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