Arc grid plate for electrical switching device

Details Arc grid plate for electrical switching device Arc grid plate for electrical switching device

1994-12-21

1996-07-23

Kincaid, Kristine L.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Arc chute assembly

218 34, 218151, H01H 3310

Patent

active

055391702

ABSTRACT:
An arc grid plate for an arc box of a contactor includes a conductive plate having two sides, a rear edge, and a front arc edge. The sides are slidable within a pair of grooves of the side walls of the arc box. The rear edge of the conductive plate has two arms which are rearwardly disposed therefrom. Each of the arms has a pointed end for gripping an associated one of the side walls. The pointed ends are generally disengaged from the associated side walls during insertion of the conductive plate into the arc box. The arms are engaged by the rear wall of the arc box and flex forwardly toward the rear edge of the conductive plate in order that the pointed ends of the arms engage the associated side walls and retain the conductive plate within the grooves of the arc box.

REFERENCES:
patent: 2590543 (1952-03-01), Kalaway
patent: 2719203 (1955-09-01), Gelzheiser et al.
patent: 2734970 (1956-02-01), Spears, Jr.
patent: 3662133 (1972-05-01), Bould et al.
patent: 4107497 (1978-08-01), Jencks et al.
patent: 4405847 (1983-09-01), Morton
patent: 4893102 (1990-01-01), Bauer

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