4. Electricity: magnetically operated switches, magnets, and electr
  5. Magnets and electromagnets
  6. With magneto-mechanical motive device

John S. Hart

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Adjustment for pneumatic timer

Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent

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Industrial relay

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent

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Motor starter with optically coupled pushbutton station

Electricity: motive power systems – Supplied or controlled by space-transmitted electromagnetic...
Patent

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Three pole electromagnet

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent

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Profile ID: LFUS-PAI-P-1258315

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