Key entrapment lock device
    34.
    发明授权
    Key entrapment lock device 失效
    钥匙锁定装置

    公开(公告)号:US3575024A

    公开(公告)日:1971-04-13

    申请号:US3575024D

    申请日:1969-04-14

    Inventor: SCHLAGE ERNEST L

    CPC classification number: E05B11/06 Y10T70/7751 Y10T70/7768 Y10T70/7944

    Abstract: A key entrapment lock device includes a cylinder plug having a keyway intersected by a passage making a wedging angle therewith. A ball in the passage is spring pressed to engage and wedge a key in the keyway when the key is moved in a withdrawing direction.

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