(12) United States Patent (io) Patent No.: US 6,437,953 B2
DiSalvo et al. (45) Date of Patent: *Aug. 20,2002
(54) CIRCUIT INTERRUPTING DEVICE WITH REVERSE WIRING PROTECTION
(75) Inventors: Nicholas L. DiSalvo, Levittown;
William R. Ziegler, East Northport,
both of NY (US)
(73) Assignee: Leviton Manufacturing Co., Inc.,
Little Neck, NY (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
This patent is subject to a terminal disclaimer.
(21) Appl. No.: 09/879,563
(22) Filed: Jun. 11, 2001
Related U.S. Application Data
(63) Continuation of application No. 09/379,138, filed on Aug. 20, 1999, now Pat. No. 6,246,558, which is a continuationin-part of application No. 09/369,759, filed on Aug. 6,1999, now Pat. No. 6,282,070, which is a continuation-in-part of application No. 09/138,955, filed on Aug. 24,1998, now Pat. No. 6,040,967.
(51) Int. C I. 110211 3/00
(52) U.S. C I 361/42
(58) Field of Search 361/42-50; 335/18,
335/21, 24, 26, 202
(56) References Cited
U.S. PATENT DOCUMENTS
4,034,266 A 7/1977 Virani et al 361/42
Resettable circuit interrupting devices, such as GFCI devices, that include reverse wiring protection, and optionally an independent trip portions and/or a reset lockout portion are provided. The reverse wiring protection operates at both the line and load sides of the device so that in the event line side wiring to the device is improperly connected to the load side, fault protection for the device remains. The trip portion operates independently of a circuit interrupting portion used to break the electrical continuity in one or more conductive paths in the device. The reset lockout portion prevents the reestablishing of electrical continuity in open conductive paths if the circuit interrupting portion is nonoperational or if an open neutral condition exists.
20 Claims, 21 Drawing Sheets