Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1992-02-28
1994-01-04
Scott, J. R.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
H01H 920
Patent
active
052762840
ABSTRACT:
A power switch disabler (10) for disable a power switch (12) provided for the energization and de-energization of electrical equipment contained within a housing (18). The power switch disabler (10) includes a housing (18) provided with an access opening (20) and associated access door (22). The access door (22) is provided with a latch (24) for securing the door (22) in a closed position. A pivoting arm (26) is fixed to one end a pivot pin (30) on the outside of the housing (18), and an engagement arm (36) is fixed to a second end of the pivoting pin (30) on the interior of the housing (18). One end of the engagement arm (36) is configured such that when the latch (24) is moved to the locked position, unselected opening of the access door (22) will be prevented. A switch (12) which incorporates a defeat lever (14) is provided for the energization and de-energization of at least one electrical component protected by the housing (18). A switch enabler (51) is provided for engaging the defeat lever (14) for selectively enabling and disabling the switch (12). The switch enabler (51) is connected between the engagement arm (36) and the defeat lever (14) such that as the latch (24) is opened, the switch (12) will be disabled, and as the latch (24) is closed, the switch (12) will be enabled.
REFERENCES:
patent: 3581032 (1971-05-01), Christensen
patent: 3609261 (1971-09-01), Rys
patent: 5019676 (1991-05-01), Heckenkamp
Golden Larry I.
Scott J. R.
Square D Company
Stacey David R.
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