B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/85
B23K 3/08 (2006.01) B23K 3/03 (2006.01) G05D 23/24 (2006.01) H01C 7/04 (2006.01) H05B 1/02 (2006.01)
Patent
CA 1290820
ABSTRACT An accurate, setting-protected, temperature controlled soldering iron has a replaceable control circuit including a non-adjustable replaceable resistor mounted near the junction of the handle and the tube which holds the soldering tip. When it is desired to change the temperature of the soldering tip, the handle must be disassembled from the tube to replace the non-adjustable resistor. Very accurate control of temperature at the soldering tip is maintained by the utilization of resistors having extremely accurate resistances. A window is provided in the soldering handle to observe a number associated with the value of the non-adjustable replaceable resistor.
554300
Blake Cassels & Graydon Llp
Cooper Industries Inc.
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