Once the timer is triggered by an input force, there is a delay before an output force is produced. The output force may be produced by a spring urging a firing pin into a pyrotechnic. A gear arrangement 2 rotates only when the output force is produced. A sear 3 is biased to prevent the gears 2 from rotating, unless the input force moves the sear 3 out of engagement with the gears 2 as shown. The gears 2 then rotate and the output force is produced. Accidental triggering of the timer by e.g. G-forces experienced in jet aircraft may be prevented by the sear 3. The centre of gravity of the sear 3 may coincide with its rotational axis.


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    Title :

    A timer


    Contributors:

    Publication date :

    2020-11-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G04F TIME-INTERVAL MEASURING , Messen von Zeitintervallen / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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