Electrical heating apparatus, method of manufacturing heat...

Details Electrical heating apparatus, method of manufacturing heat... Electrical heating apparatus, method of manufacturing heat...

2008-10-24

2011-12-27

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

With heater-unit housing, casing, or support means

C219S202000, C219S520000, C219S537000, C219S541000, C219S544000, C219S548000, C219S553000, C219S504000, C219S505000, C219S535000, C392S503000, C392S497000, C392S502000, C338S226000, C052S741100

Reexamination Certificate

active

08084721

ABSTRACT:
An electrical heating apparatus has: a fin brazed on at least one of a main body upper wall and a main body lower wall of a tube; an insertion unit having an electro-heat-generating element pressure-welded to a wall of one of the main body upper wall and the main body lower wall; and an edge part projecting in the width direction from each of main body vertical walls to form an edge space. The edge space is formed so as to be continuous with the insertion space and is smaller in thickness dimension than the thickness dimension of the insertion unit. The edge part has an edge part upper wall, an edge part lower wall, and an edge part vertical wall disposed in a concave shape.

REFERENCES:
patent: 2005/0144896 (2005-07-01), Hamburger
patent: 62-97284 (1987-05-01), None
patent: 5-1195 (1993-01-01), None
patent: 5-169967 (1993-07-01), None
European Search Report issued Feb. 11, 2009 in the European Application No. EP08167428.5.

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