Redundant pivot trip latch

Details Redundant pivot trip latch Redundant pivot trip latch

2006-10-03

2006-10-03

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

Reexamination Certificate

active

07115830

ABSTRACT:
A trip mechanism having a hatchet plate disposed on a pivot pin assembly having a pivot pin member with at least three pivoting surfaces. First and second pivoting surfaces are located where the pivot pin member engages the supporting side plates. Thus, the pivot pin assembly may rotate in the traditional manner, i.e., both the hatchet plate and the pivot pin assembly rotate between the side plates. An additional pivoting surface is located where the hatchet plate engages the pivot pin assembly.

REFERENCES:
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patent: 6072136 (2000-06-01), Wehrli, III et al.
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patent: 6160234 (2000-12-01), Wehrli et al.
patent: 6316739 (2001-11-01), Ohtsuka et al.
patent: 6437269 (2002-08-01), Rakus
patent: 6515245 (2003-02-01), Marin-Pache et al.

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