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Thread: History question

  1. #1

    Join Date
    Nov 2011
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    Question History question

    When did exhaust valve rotators first turn up on aircraft engines? WWII or earlier? What engine was first? Radial or opposed first? Questions questions questions.

  2. #2

    Join Date
    Oct 2011
    Location
    New Hampshire
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    Google tells me that

    In 1918 Continental Engineering Corp filed a patent on the provision of means for rotating lift valves, e.g. to diminish wear

    In 1954 a General Motors engineer applied for the patent for another mechanism.

    In 1961 a Briggs & Stratton engineer filed for a patent describing a better mechanism.

    In 1979 TRW filed for a patent of a better mechanism.

    Best of luck,

    Wes
    Last edited by WLIU; 06-13-2022 at 06:08 PM.

  3. #3

    Join Date
    Nov 2011
    Location
    Hood River, OR
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    28
    Thanks WLIU

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