Heater for vacuum cleaners

Electric resistance heating devices – Heating devices – Continuous flow type fluid heater

Reexamination Certificate

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Details

C392S441000, C015S320000

Reexamination Certificate

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06941064

ABSTRACT:
A heater for fluids including a housing made of a non-metallic material and having an internal cavity. The housing has an inlet and an outlet, each of which are in fluid communication with the internal cavity. An elongated electrical heating element is disposed within the cavity for heating fluid flowing through the cavity. The heating element has a generally circular cross-sectional shape and has a U-shaped portion disposed in the cavity. The electrical heating element has electrical connectors at opposite ends extending through the housing. The electrical heating element has a titanium outer surface.

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“Tubular Heaters”, Ogden Manufacturing Co., www.ogdenmfg.com.

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