US Patent No: 6,052,265

Number of patents in Portfolio can not be more than 2000

Intelligent ground fault circuit interrupter employing miswiring detection and user testing

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Importance

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Abstract

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An intelligent ground fault circuit interrupter device that incorporates a test and miswiring control circuit in addition to an independent GFCI circuit. Since the test and miswiring circuit is separate and independent of the GFCI circuit portion, it can be used with any circuit interrupting means that can be reset and which incorporates a test circuit. The test and miswiring circuit functions to indicate to a user when the device must be manually tested. The test time events occur upon first installation and on a monthly basis thereafter. The device also indicates that testing is required after occasions of power outage of sufficient time duration and after the device has been tripped by the occurrence of a ground fault. At the times when manual testing of the device is required, a visual and/or audible alarm is triggered and continues until a successful test and reset sequence is completed. The ability to detect when the device is incorrectly wired in an electrical wiring system is also provided. Upon detection of a miswiring condition, a visual and/or audible alarm is triggered to alert the user to the miswired condition. The alarm cannot be disabled unless the miswiring condition is removed.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
LEVITON MANUFACTURING CO., INC.LITTLE NECK, NY629

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bradley, Roger M North Belmore, NY 49 1168
Zaretsky, Albert Boynton Beach, FL 14 359

Cited Art Landscape

Patent Info (Count) # Cites Year
 
LEVITON MANUFACTURING CO., INC. (2)
* 5,477,412 Ground fault circuit interrupter incorporating miswiring prevention circuitry 101 1993
* 5,600,524 Intelligent ground fault circuit interrupter 143 1995
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
7,400,476 Safety device for prevention of electrical shocks 11 2004
7,633,726 Ground fault circuit interrupters with miswiring or reverse wiring protection and end of life alarm signal 9 2006
7,265,956 Ground fault circuit interrupter containing a dual-function test button 31 2006
7,289,306 Ground fault circuit interrupter containing a dual-function test button 34 2006
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
8,661,293 Test architecture based on intelligent test sequence 0 2011
 
Pass & Seymar, Inc. (1)
6,980,005 Circuit protection device with timed negative half-cycle self test 43 2004
 
COOPER TECHNOLOGIES COMPANY (7)
* 6,697,237 Conversion of standard class a ground-fault circuit-interrupters, (GFCI), to a class a ground-fault circuit interrupter with open neutral protection 14 2000
7,683,745 Ground fault circuit interrupter device 9 2006
7,623,330 Ground fault circuit interrupter device 2 2006
7,564,329 Ground fault circuit interrupter device 1 2006
7,538,647 Ground fault circuit interrupter device 12 2006
7,498,910 Ground fault circuit interrupter device 10 2006
7,864,005 Arc-fault circuit interrupter device 2 2010
 
PASS & SEYMOUR, INC. (25)
* 7,042,687 Miswire protection switch compression spring 5 2003
7,068,481 Protection device with lockout test 18 2003
* 6,952,150 Protective device with end of life indicator 34 2003
7,212,386 GFCI with miswire lockout 34 2005
7,256,973 Miswire protection switch compression spring 14 2006
* 7,619,860 Electrical wiring device 2 2006
7,283,340 Electrical wiring device 15 2006
7,852,607 Protection device with lockout test 2 2008
7,843,197 Protective device with end-of-life indication before power denial 3 2008
8,514,529 Electrical wiring device 0 2009
8,295,017 Electrical wiring device 0 2009
8,072,717 Protective device with separate end-of-life trip mechanism 0 2010
8,299,799 Electrical device with miswire protection and automated testing 3 2010
8,125,228 Protective device with automated self-test 2 2010
* 8,072,718 Protective device 1 2010
8,861,146 Electrical wiring device with protective features 1 2010
8,102,226 Protection device with a sandwiched cantilever breaker mechanism 0 2011
8,477,466 Protective device with separate end-of-life trip mechanism 0 2011
8,446,234 Protection device with a sandwiched cantilever breaker mechanism 0 2012
9,007,063 Protective device with automated self-test 0 2012
8,526,146 Electrical wiring device 0 2012
9,007,153 Protection device with a sandwiched cantilever breaker mechanism 0 2013
9,118,172 Protective device with automated self test 0 2013
8,902,552 Protective device with automated self test 0 2013
8,953,289 Electrical wiring device 0 2013
 
ROBERTSHAW CONTROLS COMPANY (2)
* 8,781,784 System and method for detecting miswiring of an electrical appliance 0 2011
* 2012/0191,399 System and Method for Detecting Miswiring of an Electrical Appliance 0 2011
 
General Protech Group, Inc. (1)
7,492,559 Intelligent life testing methods and apparatus for leakage current protection 8 2006
 
GENERAL PROTECHT GROUP U.S., INC. (3)
6,946,935 Ground fault circuit interrupter with reverse wiring protection 30 2002
6,954,125 Ground fault circuit interrupter with reverse wiring protection 34 2003
7,403,086 Ground fault circuit interrupter with reverse wiring protection 8 2005
 
COOPER WIRING DEVICES, INC. (5)
6,515,564 Electric circuit interrupter 38 1999
6,433,555 Electrical circuit interrupter 22 2000
6,525,541 Electric circuit interrupter with fail safe mode and method 31 2000
* 6,829,124 Ground fault circuit interrupter with functionality for reset 44 2001
6,949,995 Electrical circuit interrupter 16 2003
 
Huang, Huadao (8)
7,315,227 Ground fault circuit interrupters providing end of the life test 29 2006
7,195,500 Ground fault circuit interrupter with end of life indicators 45 2006
7,317,600 Circuit interrupting device with automatic end of life test 30 2006
7,295,415 Circuits for circuit interrupting devices having automatic end of life testing function 37 2006
7,538,993 Receptacle circuit interrupting devices providing an end of life test controlled by test button 16 2006
7,576,959 Circuit interrupting device with automatic end-of-life test 7 2007
8,233,251 Circuit interrupting device with interconnecting reset and test buttons 2 2008
8,462,471 Circuit interrupting device with high voltage surge protection 0 2009
 
HUADAO HUANG (4)
7,411,766 Circuit interrupting device with end of life testing functions 26 2007
7,859,368 Circuit interrupting device with automatic components detection function 7 2007
7,940,498 Circuit interrupting device with high voltage surge protection 2 2007
8,300,368 Circuit interrupting device with end-of life testing, reverse wiring and high voltage surge capability 3 2008
 
PEPPERL + FUCHS GMBH (1)
* 7,876,544 Electrical circuit with incendive arc prevention means 1 2005
 
LEVITON MANUFACTURING CO., INC. (50)
7,049,910 Circuit interrupting device with reset lockout and reverse wiring protection and method of manufacture 50 2001
7,031,125 Reset lockout for sliding latch GFCI 37 2001
6,937,451 ALCI with reset lockout and independent trip 24 2001
* 2004/0090,722 Alci with reset lockout and independent trip 0 2001
7,737,809 Circuit interrupting device and system utilizing bridge contact mechanism and reset lockout 4 2003
7,049,911 Circuit interrupting device and system utilizing electromechanical reset 49 2003
6,944,001 Circuit interrupting system with independent trip and reset lockout 33 2003
6,975,492 Reset lockout for circuit interrupting device 37 2003
* 7,187,526 Circuit interrupting device with lock out and reversible wiring 22 2004
6,975,192 IDCI with reset lockout and independent trip 29 2004
7,378,927 Circuit breaker with independent trip and reset lockout 9 2004
* 6,864,766 Circuit interrupting device with reverse wiring protection 79 2004
7,365,621 Pivot point reset lockout mechanism for a ground fault circuit interrupter 13 2004
7,463,124 Circuit interrupting device with reverse wiring protection 20 2004
7,098,761 Reset lockout mechanism and independent trip mechanism for center latch circuit interrupting device 27 2004
7,414,499 Circuit interrupting device with a single test-reset button 13 2005
7,177,126 ALCI with reset lockout and independent trip 13 2005
7,455,538 Electrical wiring devices with a protective shutter 27 2005
7,336,458 Circuit interrupting system with independent trip and reset lockout 10 2005
7,944,331 Circuit interrupting device with reverse wiring protection 0 2005
* 7,209,330 Reset lockout for circuit interrupting device 21 2005
7,215,521 GFCI with reset lockout 8 2005
7,492,558 Reset lockout for sliding latch GFCI 19 2006
7,400,477 Method of distribution of a circuit interrupting device with reset lockout and reverse wiring protection 19 2006
7,852,606 Self-testing circuit interrupting device 2 2006
7,400,479 Reset lockout for circuit interrupting device 10 2007
7,558,034 Bi-directional ground fault circuit interrupter 14 2007
* 7,911,746 GFCI with self-test and remote annunciation capabilities 5 2007
7,439,833 Ground fault circuit interrupter with blocking member 19 2007
7,715,158 Circuit interrupter with live ground detector 3 2007
7,834,560 Dimming system powered by two current sources and having an operation indicator module 1 2007
7,804,255 Dimming system powered by two current sources and having an operation indicator module 1 2007
7,907,371 Circuit interrupting device with reset lockout and reverse wiring protection and method of manufacture 1 2008
7,826,183 Circuit interrupting device with reset lockout and reverse wiring protection and method of manufacture 0 2008
7,889,466 Fault circuit interrupter with bi-directional sensing 2 2008
7,800,874 Circuit interrupting device with automatic test 3 2008
7,869,173 Bi-directional GFCI 0 2008
7,924,537 Miswiring circuit coupled to an electrical fault interrupter 0 2008
7,764,151 Circuit interrupting device with reverse wiring protection 2 2008
8,183,869 Circuit interrupter with continuous self-testing feature 2 2008
8,139,328 Fault circuit interrupting device with symmetrical inputs 4 2008
8,004,804 Circuit interrupter having at least one indicator 1 2009
7,986,501 Detecting and sensing actuation in a circuit interrupting device 4 2009
7,990,663 Detecting and sensing actuation in a circuit interrupting device 3 2009
8,054,595 Circuit interrupting device with reset lockout 2 2009
8,547,126 Self testing fault circuit apparatus and method 1 2010
8,444,309 Wiring device with illumination 2 2010
8,526,144 Reset lockout with grounded neutral test 1 2011
8,199,446 Circuit interrupting system with remote test and reset activation 0 2011
8,130,480 Circuit interrupting device with reset lockout 1 2011
 
HUBBELL INCORPORATED (9)
6,807,035 Fault interrupter using microcontroller for fault sensing and automatic self-testing 69 2000
6,697,238 Ground fault circuit interrupter (GFCI) with a secondary test switch contact protection 48 2001
6,807,036 Digital fault interrupter with self-testing capabilities 77 2002
6,920,025 GFCI with reverse line/load wiring prevention 24 2002
7,443,309 Self testing ground fault circuit interrupter (GFCI) 14 2004
7,733,617 Self testing digital fault interrupter 3 2005
7,336,457 Ground fault circuit interrupter (GFCI) end-of-life (EOL) status indicator 12 2005
* 7,315,437 Self testing ground fault circuit interrupter (GFCI) with end of life (EOL) indicator, secondary power supply for EOL and self test circuitry, and device for opening line hot when EOL occurs 27 2006
8,089,738 GFCI that cannot be reset until wired correctly on line side and power is applied 2 2011
 
CHEIL ELECTRIC WIRING DEVICES CO., LTD. (1)
* 6,850,394 Apparatus and method for determining mis-wiring in a ground fault circuit interrupter 32 2002
 
TRUE-SAFE TECHNOLOGIES, INC. (2)
* 8,995,098 Miswire protection and annunciation of system conditions for arc fault circuit interrupters and other wiring devices 0 2012
* 2013/0188,290 Miswire protection and annunciation of system conditions for arc fault circuit interrupters and other wiring devices 2 2012
 
CATERPILLAR INC. (1)
7,808,245 Testing method for a ground fault detector 1 2007
 
CHEN, HENG (6)
7,592,924 Intelligent life testing methods and apparatus for leakage current protection 3 2006
7,889,464 Leakage current detection interrupter with fire protection means 5 2006
7,525,441 Intelligent life testing methods and apparatus for leakage current protection device with indicating means 9 2006
7,522,064 Apparatus and methods for testing the life of a leakage current protection device 1 2006
7,515,024 Movement mechanism for a ground fault circuit interrupter with automatic pressure balance compensation 7 2006
7,268,559 Intelligent life testing methods and apparatus for leakage current protection 16 2006
 
EATON CORPORATION (4)
* 7,215,520 Circuit interrupter including arc fault test and/or ground fault test failure indicator 9 2004
7,486,492 Electrical switching apparatus including a second trip circuit responding to failure of a first trip circuit to provide a repetitive signal 4 2006
7,518,840 Electrical switching apparatus and receptacle including automatic miswiring protection 5 2006
8,004,418 Communication interface apparatus for an electrical distribution panel, and system and electrical distribution panel including the same 2 2008
* Cited By Examiner