Electric resistance heating devices – Heating devices – Immersion heater details
Patent
1994-03-09
1996-04-09
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Immersion heater details
392441, 392451, 392497, 219523, 219536, F24H 120, F24H 906, H05B 312
Patent
active
055069312
ABSTRACT:
An immersion type water heating element assembly. The assembly allows replacement of a water heating element for a hot water tank without removing the electrical supply wires or disconnecting an electrical supply by providing a first main plate having a hole therethrough and permanently attached to a hot water tank. Supply terminals are positioned on the first main plate and permanently wired to an electrical supply for supplying current. A second plate is detachably mounted to the first main plate and includes a water heating element and contact terminals which contact the electrical supply terminals when the second main plate is mounted on the first main plate. The assembly includes a sealing device for preventing water in the hot water tank from leaking through the first main plate and the second main plate. The immersion type heating element attached to the second main plate extends through the hole in the first main plate and into the hot water tank. A conducting device connects the contact terminals to the heating element. An electrical resistor within the heating element is connected to the power contact terminals through the conducting device when the second main plate is mounted on the first main plate. Therefore, the water heating element may be removed by simply detaching the second main plate without having to remove electrical supply wires or disconnecting an electrical supply.
REFERENCES:
patent: 2418520 (1947-04-01), Morton
patent: 2594255 (1952-04-01), Charbonneau
patent: 2613312 (1952-10-01), Thurston
patent: 2772343 (1956-11-01), Buehne
patent: 3111572 (1963-11-01), Drugmand
patent: 3202795 (1965-08-01), Kreiser
patent: 3202796 (1965-08-01), Drugmand
patent: 3210526 (1965-10-01), Burger
patent: 3228796 (1965-10-01), Drugmand
patent: 3778592 (1973-12-01), Williams
patent: 3916149 (1975-10-01), Skinner
patent: 3977073 (1976-08-01), Shirey
patent: 4178497 (1979-12-01), Cunningham
patent: 4430556 (1984-02-01), Inskip et al.
patent: 5252303 (1993-10-01), Goof
Paik Sam
Reynolds Bruce A.
The Commonwealth of Puerto Rico
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