EP 1127279 A4 20020703 - LOW COST ELECTRICAL CIRCUIT BREAKER LOCATER WITH PASSIVE TRANSMITTER AND RECEIVER
Title (en)
LOW COST ELECTRICAL CIRCUIT BREAKER LOCATER WITH PASSIVE TRANSMITTER AND RECEIVER
Title (de)
ELEKTRISCHER SCHUTZSCHALTER-ORTUNGGERÄT MIT PASSIVEM SENDER UND EMPFANGER
Title (fr)
COUPE-CIRCUIT ELECTRIQUES LOCALISES A L'AIDE D'UN EMETTEUR PASSIF ET D'UN RECEPTEUR
Publication
Application
Priority
- US 9925775 W 19991102
- US 10680798 P 19981103
Abstract (en)
[origin: WO0026679A1] A system for locating a circuit interrupter, e.g. a circuit breaker, associated with a selected branch circuit (40-45) from amongst a plurality of circuit interrupting devices, CB1-CB6. The system includes a receiver (300) and a passive transmitter (100). The passive transmitter (100) when electrically connected to a branch circuit creates a current spike signal on that circuit at a predetermined frequency. This current spike signal has a sufficiently short spike duration so as to only generate a weak electromagnetic field about the circuit wire, which in turn, substantially minimizes the development of a sympathetic signal on other branch circuits adjacent to the selected branch circuit. Thus, the true current spike signal is easily distinguishable from any sympathetic signals. Accordingly, the receiver (300) can be broadly tuned about the predetermined frequency of the current spike signal and drives a user-perceivable signaling device upon sensing the current spike signal. A method for locating a circuit interrupter is also disclosed.
IPC 1-7
IPC 8 full level
G01R 19/04 (2006.01); H01H 9/54 (2006.01); H02J 13/00 (2006.01)
CPC (source: EP)
H02J 13/00009 (2020.01); Y02E 60/00 (2013.01); Y04S 40/121 (2013.01)
Citation (search report)
- [XY] US 5497094 A 19960305 - GEORGE DAVID L [US]
- [Y] US 3714451 A 19730130 - HOHMAN W, et al
- [X] US 4906938 A 19900306 - KONOPKA JOHN G [US]
- [PXPA] WO 9905536 A1 19990204 - NTC INC [US]
- [A] US 5109200 A 19920428 - DUSHANE STEVEN D [US], et al
- [A] GB 2217857 A 19891101 - KELLY JOHN TERENCE
- [A] US 4024528 A 19770517 - BOGGS LUTHER M, et al
- See references of WO 0026679A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0026679 A1 20000511; WO 0026679 A9 20020822; AU 1711500 A 20000522; EP 1127279 A1 20010829; EP 1127279 A4 20020703; HK 1039980 A1 20020517; JP 2002529888 A 20020910
DOCDB simple family (application)
US 9925775 W 19991102; AU 1711500 A 19991102; EP 99960191 A 19991102; HK 02101545 A 20020228; JP 2000580009 A 19991102