H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 3/06 (2006.01) H05B 1/02 (2006.01) H05B 6/02 (2006.01) H05B 6/10 (2006.01)
Patent
CA 2095546
2095546 9208332 PCTABS00013 An apparatus for heating a fluid contained in an electrically conductive metal container (26) includes a stepdown transformer (10) having a primary winding (14) coupled to a source of electric energy and a secondary winding (16) that includes the container (26) itself. In a preferred embodiment, two semicircular clamps (18), having articulated jaws, carry the current from the transformer (10). Such clamps (18) are made to close around the upper and lower portion of the walls of a cylindrical can (26), completing a secondary winding (16) in which a very high current flows in the walls of the container (26). The turns ratio of the transformer (10) is sufficient to reduce the voltage in the secondary winding (16) to a safe level. Advantageously, the primary winding (14) is connected in series to a thermal cutoff switch (22) which contacts the container (26). Additionally, the primary winding (14) is also connected serially to a contact switch (28) mounted below the container (26) which closes only when the container (26) is present.
Froehle Joan C.
Weidman Charles Ray
Kilo Alpha Company
Osler Hoskin & Harcourt Llp
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