Electrical resistors – Incased – embedded – or housed – Element inpowdered insulation with outer metallic sheath
Reexamination Certificate
2007-05-15
2007-05-15
Hoang, Tu (Department: 2832)
Electrical resistors
Incased, embedded, or housed
Element inpowdered insulation with outer metallic sheath
C338S243000, C338S302000, C219S544000
Reexamination Certificate
active
10516233
ABSTRACT:
A high-voltage resistor element which is superior to heat resistance, dielectric breakdown strength, vibration resistance and durability performance, and is advantageous to maintenance, inspection, adjustment, replacement and repair, is made up of: a cylindrical outer tube made of metal; a resistive heat-generating wire in a coiled shape tensionally extending between inner ends of electrode rods inserted respectively from both ends of the outer tube; an insulating material filing up a space between the resistive heat-generating wire with the electrode rods and the internal surface of the outer tube and fired; and insulating sleeves extractably encasing and anchored in the portions adjacent to the both ends of the outer tube penetratingly bridging between arrangement boards.
REFERENCES:
patent: 3578952 (1971-05-01), Boose
patent: 4072847 (1978-02-01), Craven
patent: 4621251 (1986-11-01), Keefe
patent: 6034354 (2000-03-01), Hironaka
patent: 7019269 (2006-03-01), Okuda
patent: 09-015307 (1997-01-01), None
patent: 09-015308 (1997-01-01), None
patent: 2000-019231 (2000-01-01), None
Hoang Tu
Jordan and Hamburg LLP
Kouken Company, Limited
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