Circuit breaker with welded contacts

Details Circuit breaker with welded contacts Circuit breaker with welded contacts

1991-05-29

1993-02-09

Recla, Henry J.

Electricity: circuit makers and breakers

Toggle mechanisms

200327, 200DIG42, 335 24, 335166, 335168, H01H 523

Patent

active

051847175

ABSTRACT:
The handle of a circuit breaker is blocked from movement to the off positiion, when the contacts are welded closed, thereby preventing rotation of the common cross-bar on which contact arms carrying the movable contacts are mounted, by an interlock which includes radial extensions on the arms of a pivoted handle yoke which radially engage projections on the cross-bar.

REFERENCES:
patent: 3525959 (1970-07-01), Ellsworth et al.
patent: 3614685 (1971-10-01), Ellsworth et al.
patent: 3849747 (1974-11-01), Mrenna et al.
patent: 4546224 (1985-10-01), Mostosi
patent: 4630019 (1986-12-01), Maier et al.
patent: 4679016 (1987-07-01), Ciarcia et al.
patent: 4713639 (1987-12-01), Grunert et al.

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