Heater apparatus for use in a liquid environment

Details Heater apparatus for use in a liquid environment Heater apparatus for use in a liquid environment

1992-06-02

1995-08-22

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219523, 219528, 219502, 219497, 116286, 116256, H05B 102

Patent

active

054442273

ABSTRACT:
An improved heater and control apparatus (10) suitable for maintaining a proper temperature in a liquid environment such as an aquarium (12) is provided. The apparatus (10) includes a heater element (26) housed within a protective casing (28) to reduce the likelihood of heater element (26) breakage. A number of openings (30) are provided in casing (28) to permit direct contact between the heater element (26) and water in the aquarium (12). The control assembly (16) includes a novel active light display (99). Additional novel features and corresponding advantages of the apparatus (10) are disclosed.

REFERENCES:
patent: 2554745 (1951-05-01), Kapsch
patent: 3576426 (1971-04-01), Sesholtz
patent: 3677619 (1972-07-01), Mackenzie
patent: 3868923 (1975-03-01), Lambas
patent: 3916317 (1975-10-01), Gibson et al.
patent: 4007371 (1977-02-01), Njos et al.
patent: 4326121 (1982-04-01), Welsby et al.
patent: 4983813 (1991-01-01), Van Tulleken et al.

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