Heater for an aquarium
AssigneeEbo-Jager, Inc.
InventorWolfgang Jager
Life of this patent
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Abstract
An immersible heater for an aquarium includes a waterproof, heat-resisting, flat plastic case which is tripartitioned in its interior, one chamber holding a flat coil carrier bonded or welded to the case; an upper chamber contains a leaf spring actuated by a bimetallic element; these chambers are separated by a thermally isolating chamber. The bias of the bimetallic actuator is adjusted by a sealed feedthrough screw. Current flow through the heating coil is indicated by a lamp covered with a thinner wall portion of the case. The front of the case carries heat-dissipating and -stiffening ribs; the rear of the case carries suction cups.
Claims10
A heater for an aquarium, comprising:
- a flat waterproof case being made of a synthetic plastic which is water-resisting and heat-resisting, and there being integral partitions in the case for establishing at least one larger and one smaller chamber,
- a flat heating element including a flat carrier mounted to the case in the larger chamber and an electrical heating filament attached to said carrier;
- a temperature controller mounted in the smaller chamber;
- connecting wires sealingly run into the smaller chamber and connected to the controller, the controller being additionally connected electrically to the heating element, and
- integral flow deflection means on an outside surface of the case near the partition to improve thermal insulation of the temperature controller in the smaller chamber.
Dependencies are inferred from the claim text.