Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy
Reexamination Certificate
2008-08-05
2011-10-18
Enad, Elvin G (Department: 2832)
Electricity: circuit makers and breakers
Contact moved by sudden release of stored energy,
C200S401000
Reexamination Certificate
active
08039770
ABSTRACT:
A movable arm assembly is for an electrical switching apparatus including a stationary contact and an operating mechanism. The arm assembly includes a biasing member and an arm member having a first end, an opposite second end, a pivot point therebetween, and a portion having a longitudinal axis. A movable contact is disposed at or about the first end. The arm member engages a crossbar member at or about the pivot point such that the arm member can pivot from a first position to a second position. The biasing member engages the arm member at a point between the pivot point and the second end and includes a portion that engages and biases against a housings of the crossbar member. The longitudinal axis of the portion of the arm member is oriented generally parallel to the portion of the biasing member when the arm member is at the first position.
REFERENCES:
patent: 4472701 (1984-09-01), Bellows et al.
patent: 5023416 (1991-06-01), Oyama et al.
patent: 5539167 (1996-07-01), Hood et al.
patent: 5994988 (1999-11-01), Ferree et al.
Grahor Louis F.
Janusek Mark A.
Puhalla Craig J.
Schaltenbrand Brian J.
Eaton Corporation
Enad Elvin G
Klaus Lisa
Moran Martin J.
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