{
  "patent_number": "US 382280",
  "country": "US",
  "title": "How Nikola Tesla Invented the Modern AC Electric Motor",
  "original_title": "Electrical Transmission Of Power",
  "summary": "Nikola Tesla's 1888 patent for an induction motor that uses rotating magnetic fields to convert electricity into mechanical motion without needing physical brushes.",
  "what_it_does": "This patent describes an alternating current (AC) motor that eliminates the need for sliding electrical contacts, known as brushes, which were prone to sparking and wear in early direct current (DC) motors. It uses multiple sets of electromagnetic coils arranged in a circle, energized in a specific sequence to create a rotating magnetic field. This field induces an electric current in a central metal rotor, causing it to spin in synchronization with the magnetic field. This design allows for a robust, long-lasting motor that can run efficiently on the AC power grid.",
  "what_it_does_not_cover": [
    "Does not cover direct current (DC) motors that rely on mechanical commutators and brushes.",
    "Does not cover single-phase AC motors that lack the specific multi-phase rotating field mechanism described.",
    "Does not cover power generation systems, only the specific motor configuration for converting electrical energy to rotational work."
  ],
  "filed": null,
  "granted": "1888-05-01",
  "expires": null,
  "status": "active",
  "holder": "Individual",
  "holder_url": "https://patentbrief.org/company/individual",
  "inventors": [
    {
      "name": "Nikola Tesla",
      "url": "https://patentbrief.org/inventor/nikola-tesla"
    }
  ],
  "times_cited": 1,
  "tags": [
    "energy",
    "mechanical",
    "automotive"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/382280/tesla-ac-motor",
  "markdown_url": "https://patentbrief.org/patent/us/382280/tesla-ac-motor/md",
  "google_patents_url": "https://patents.google.com/patent/US382280",
  "relatedPatents": [
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      "countryCode": "US",
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    },
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}