| US 5,943,199 C1 (7021st) | ||
| MINI APPLIANCE LEAKAGE CURRENT INTERRUPTER | ||
| Victor V. Aromin, West Warwick, R.I., assignor to Tower Manufacturing Corporation, Providence, R.I. | ||
| Reexamination Request No. 90/008,267, Oct. 6, 2006. | ||
| Reexamination Certificate for Patent 5,943,199, issued Aug. 24, 1999, Appl. No. 837,739, Apr. 22, 1997. | ||
| Int. Cl. H01H 83/00;83/04; |
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| U.S. Cl. 361—42 |
| AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT: |
| Claims 2-3 are cancelled. |
| Claims 1 and 4-7 are determined to be patentable as amended. |
| 1. An appliance leakage current interrupter (ALCI) for interrupting the flow of current through a pair of lines extending between a source of power and a load, said pair of lines consisting of a hot line and a neutral line, said appliance leakage current interrupter comprising: a. a circuit breaker having a pair of normally closed switches, one switch being located in each of said lines between the source of power and the load;
b. a relay circuit for selectively opening the pair of normally closed switches, said relay circuit including a solenoid;
c. a fault detection circuit for detecting the presence of a ground fault condition in said pair of lines and for causing said relay circuit to open said circuit breaker when said fault condition detected exceeds a predetermined value, said fault detection circuit comprising an integrated circuit chip and a transformer, said transformer including a common core having three laminated layers, a primary winding and a multi-turn secondary winding, said hot and neutral lines extending between the source of power and the load serving as the primary winding for the transformer, each line of said hot and neutral lines of the primary winding being wrapped twice around the core of said transformer; [and]
d. a single-sided circuit board, said single-sided circuit board having a bottom surface and a top surface, the top surface having a pattern of conductive paths;
e. [wherein]said integrated circuit chip [is]being mounted on the top surface of said single-sided circuit board and [wherein]said [relay circuit] solenoid and said transformer [being]are mounted on the bottom surface of said single-sided circuit board; and
f. a generally rectangular-shaped housing, said housing being mounted on an end of an electrical cord connected to the load, said housing having a length of approximately 1.5 inches, a width of approximately 1.35 inches and a thickness of approximately 1.05 inches, said electrical cord having a longitudinal axis, said circuit breaker, said relay circuit, said fault detection circuit and said single-sided circuit board all being disposed inside said generally rectangular-shaped housing.
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