Electric heating – Heating devices – With heating unit structure
Patent
1991-08-30
1993-09-14
Reynolds, Bruce A.
Electric heating
Heating devices
With heating unit structure
219535, 338208, 338214, H05B 356
Patent
active
052451615
ABSTRACT:
An electric heater comprises a braid construction of a plurality of strands having electric resistance, thereby the strands are heated due to a Joule heat when a current flows therethrough. The strands are braided with a core wire of tube or without cores. These strands are placed in two core wires dielectrically insulated, which core wires have exposed portions formed therein in a shape of semi-circle or arc-like at a regular interval mutually. The core wires are covered with an insulator laid thereon and an electric heating element is wound around the insulator covering in a large spiral. A C-shaped fixing piece made of metal is used to be adapted on the exposed portions of the core wires. Then the opening of the C shape of the fixing piece is pressed toward each other to close it. Claws, formed on the inner face of the fixing piece, grip firmly the strands of the heater element to the core wires.
REFERENCES:
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patent: 1944390 (1934-01-01), Aceves
patent: 2036368 (1936-04-01), Siegal
patent: 3757086 (1973-09-01), Indoe
patent: 3859506 (1975-01-01), Weckstein
patent: 4037083 (1977-07-01), Leavines
patent: 4392051 (1983-07-01), Goss et al.
patent: 4891500 (1988-09-01), Bloore
Meller Michael N.
Reynolds Bruce A.
Switzer Michael D.
Tokyo Kogyo Boyeki Shokai, Ltd.
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