{
  "patent_number": "US 2168726",
  "country": "US",
  "title": "Frank Whittle's Early Jet Engine Design",
  "original_title": "Propulsion of aircraft and gas turbines",
  "summary": "Frank Whittle's 1937 patent for an aircraft propulsion system using a gas turbine, which laid the foundation for modern jet engines.",
  "what_it_does": "The patent describes a propulsion system for aircraft that utilizes a gas turbine to generate thrust. It details a compressor that draws in air, a combustion chamber where fuel is burned to increase the energy of the air, and a turbine that extracts energy from the hot exhaust gases to drive the compressor. The high-velocity exhaust is then expelled through a nozzle to create forward propulsion. This design effectively replaces the traditional piston-and-propeller engine with a continuous flow process.",
  "what_it_does_not_cover": [
    "Does not cover turbofan engine designs with high bypass ratios common in modern airliners.",
    "Does not cover specific electronic fuel injection or digital engine control systems.",
    "Does not cover ramjet or scramjet propulsion systems that lack rotating compressor components.",
    "Does not cover modern materials like single-crystal turbine blades or ceramic matrix composites."
  ],
  "filed": "1937-02-27",
  "granted": "1939-08-08",
  "expires": "1957-02-27",
  "status": "expired",
  "holder": "Individual",
  "holder_url": "https://patentbrief.org/company/individual",
  "inventors": [
    {
      "name": "Whittle Frank",
      "url": "https://patentbrief.org/inventor/whittle-frank"
    }
  ],
  "times_cited": 50,
  "tags": [
    "aerospace",
    "mechanical"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/2168726/jet-engine-whittle",
  "markdown_url": "https://patentbrief.org/patent/us/2168726/jet-engine-whittle/md",
  "google_patents_url": "https://patents.google.com/patent/US2168726",
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}