Bus plug door interlock

Details Bus plug door interlock Bus plug door interlock

1998-10-02

2000-02-08

Friedhofer, Michael

Electricity: circuit makers and breakers

Interlocking

Between switches and housing

H01H 922

Patent

active

060230304

ABSTRACT:
An improved bus plug door interlock for use with a bus plug in conjunction with an electrical power busway distribution system is described. The bus plug includes the bus plug door interlock, a door, a housing and an electrical switch. The bus plug door interlock prevents the bus plug door from opening when the electrical switch is in the "on" position and prevents the power from being turned "on" when the door is open. The bus plug door interlock includes a door interlock pivot with a single flat surface and a elongated slot with a narrow and a wide section. When the door interlock pivot is in the narrow section of the elongated, the single flat surface engages narrow section of the elongated, preventing the electrical switch from being turned "on". When the door interlock pivot is in the wide section of the elongated slot, the door interlock pivot can rotate freely, allowing the electrical switch to be turned "on". Additionally, the single flat surface prevents the electrical switch from being turned "on" when the door is partially open.

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Square D Corporation, Busway Systems Catalog, Oct., 1992, Complete Catalog, particularly pp. 4-6, 9.

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