{
  "patent_number": "US 821393",
  "country": "US",
  "title": "How the Wright Brothers Invented Modern Airplane Control",
  "original_title": "Flying-machine.",
  "summary": "The foundational patent for the first successful powered, heavier-than-air flying machine that could be controlled in flight.",
  "what_it_does": "The patent describes a system for controlling a flying machine by warping the wings to maintain balance and steer. It utilizes a mechanism to twist the wing tips in opposite directions, creating a difference in lift that causes the aircraft to bank. This lateral control, combined with a vertical rudder, allowed the pilot to maintain stability against wind gusts and execute coordinated turns.",
  "what_it_does_not_cover": [
    "Does not cover jet propulsion or turbine engines.",
    "Does not cover vertical takeoff and landing (VTOL) technology.",
    "Does not cover fly-by-wire electronic flight control systems.",
    "Does not cover pressurized cabins or high-altitude flight systems."
  ],
  "filed": "1903-03-23",
  "granted": "1906-05-22",
  "expires": "1923-05-22",
  "status": "expired",
  "holder": "Individual",
  "holder_url": "https://patentbrief.org/company/individual",
  "inventors": [
    {
      "name": "Wilbur Wright",
      "url": "https://patentbrief.org/inventor/wilbur-wright"
    },
    {
      "name": "Orville Wright",
      "url": "https://patentbrief.org/inventor/orville-wright"
    }
  ],
  "times_cited": 19,
  "tags": [
    "aerospace",
    "mechanical"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/821393/wright-brothers-flying-machine",
  "markdown_url": "https://patentbrief.org/patent/us/821393/wright-brothers-flying-machine/md",
  "google_patents_url": "https://patents.google.com/patent/US821393",
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}