4. Electricity: electrical systems and devices
  5. Safety and protection of systems and devices
  6. Ground fault protection

David M. Olszewski

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Electrical switching apparatus employing twice-energized trip ac

Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent

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Electrical switching apparatus having a cradle with combined...

Electricity: circuit makers and breakers – Contact moved by sudden release of stored energy
Reexamination Certificate

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Electrical switching apparatus, and housing and integral...

Electricity: circuit makers and breakers – Electric switch details – Contact
Reexamination Certificate

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Gas segregator barrier for electrical switching apparatus

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With housing or support means
Reexamination Certificate

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Gassing insulator assembly, and conductor assembly and...

High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Contact structure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1214668

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