Cement resistor

Details Cement resistor Cement resistor

2007-05-04

2008-09-02

Lee, K. Richard (Department: 2832)

Electrical resistors

Incased, embedded, or housed

C338S245000, C338S250000, C029S611000

Reexamination Certificate

active

07420454

ABSTRACT:
A resistive element in the form of a bent metal plate is placed in a box-shaped case and has electrodes exposed out of the box-shaped case. A heat radiator in the form of a bent metal plate is also placed in the box-shaped case and has heat radiating electrodes exposed out of the box-shaped case. The resistive element and the heat radiator are held out of contact with each other and disposed in criss-cross relation to each other. The box-shaped case is filled with a cement material in surrounding relation to the resistive element and the heat radiator.

REFERENCES:
patent: 3772452 (1973-11-01), Usowski
patent: 4210800 (1980-07-01), Van Bokestal et al.
patent: 4333069 (1982-06-01), Worth et al.
patent: 4672358 (1987-06-01), Pryst et al.
patent: 4678890 (1987-07-01), Sorrow
patent: 5300919 (1994-04-01), Caddock
patent: 6317024 (2001-11-01), Orii

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