H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 3/06 (2006.01)
Patent
CA 2332779
A fully submersible immersion heater having reduced dimensions. The immersion heater includes a waterproof housing, an electric heating element, a thermostat, an end cap, a temperature control, a power cable and a sheath. The waterproof housing has an opening at one end. The electric heating element, which generates a heat output, is placed inside of the housing. The thermostat is also placed inside of the housing. The thermostat is electrically connected to the heating element for regulating the heat output of the heating element. The end cap sealingly engages the opening in the housing to form a watertight seal between the end cap and the opening in the housing. The end cap has a first conduit and a second conduit that extend through the end cap from a first surface of the end cap outside of the housing to a second surface of the end cap inside of the housing. The temperature control, which controls the thermostat, is seated adjacent to the second conduit. The temperature control is operatively connected to the thermostat by a shaft extending through the second conduit. The shaft sealingly engages the second conduit to form a watertight seal between the shaft and the second conduit. The flexible, water-resistant power cable, which has an outer surface, extends from outside of the housing through the first conduit and is electrically connected to the thermostat inside of the housing. The power cable supplies electrical power to the heating element. The sheath is molded onto the power cable and has an outer surface that is shaped to be complementarily received by the first conduit. The sheath forms a watertight seal with the outer surface of the supply cable and sealingly engages the first conduit to form a watertight seal between the sheath and the first conduit.
Gowling Lafleur Henderson Llp
Rena France
LandOfFree
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