US 12,072,371 B2
Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial
Thomas James Batko, Wallingford, CT (US); and Joseph Vincent DeBartolo, North Stonington, CT (US)
Assigned to Hubbell Incorporated, Shelton, CT (US)
Filed by Hubbell Incorporated, Shelton, CT (US)
Filed on Aug. 16, 2023, as Appl. No. 18/450,547.
Application 18/450,547 is a continuation of application No. 17/331,083, filed on May 26, 2021, granted, now 11,747,392.
Application 17/331,083 is a continuation of application No. 16/573,301, filed on Sep. 17, 2019, granted, now 11,025,049, issued on Jun. 1, 2021.
Application 16/573,301 is a continuation of application No. 15/415,086, filed on Jan. 25, 2017, granted, now 10,418,799, issued on Sep. 17, 2019.
Application 15/415,086 is a continuation of application No. 14/203,610, filed on Mar. 11, 2014, granted, now 9,595,824, issued on Feb. 22, 2017.
Claims priority of provisional application 61/791,114, filed on Mar. 15, 2013.
Prior Publication US 2023/0408575 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/28 (2006.01); G01R 31/50 (2020.01); G01R 31/52 (2020.01); H01H 71/04 (2006.01); H01H 83/04 (2006.01); H02H 3/04 (2006.01); H02H 3/16 (2006.01); H02H 3/33 (2006.01)
CPC G01R 31/2827 (2013.01) [G01R 31/50 (2020.01); G01R 31/52 (2020.01); H01H 71/04 (2013.01); H01H 83/04 (2013.01); H02H 3/044 (2013.01); H02H 3/162 (2013.01); H02H 3/335 (2013.01); H01H 2071/044 (2013.01); H01H 2300/052 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of operating an auto-monitoring circuit of a circuit interrupting device, the method comprising:
monitoring one or more signals to determine an operating state of said circuit interrupting device;
outputting a first signal having a first voltage level based on the operating state, wherein the first voltage level is greater than zero volts; and
outputting, after outputting the first signal, a second signal having a second voltage level based on the operating state, wherein the second voltage level is greater than the first voltage level.