Sheathed heater

Details Sheathed heater Sheathed heater

1994-01-18

1995-03-28

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219546, 219550, 338261, H05B 348

Patent

active

054019370

ABSTRACT:
A sheathed heater having a cylindrical metal sheath includes at least two rod shaped insulator core pieces that are separated from each other and inserted into the sheath along an axial direction of each core piece. Two or three lead pins separated from each other are inserted into the core pieces axially, and an internal heater coil segment is wound around each core piece. Adjacent ends of adjacent internal heater coil segments are electrically connected to the same lead pin, and the coil segments are connected across a single-phase or three-phase electric power source through the lead pins. A thermal and electric insulation material can be inserted between adjacent core pieces.

REFERENCES:
patent: 1533096 (1925-04-01), Bullinger
patent: 1976624 (1934-10-01), Mucher
patent: 2213887 (1940-09-01), Ross
patent: 2993186 (1961-07-01), Hay
patent: 3882297 (1975-05-01), Avalon
patent: 4039996 (1977-08-01), Handerhan

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