Chuck guard
    2.
    发明授权
    Chuck guard 失效
    K K

    公开(公告)号:US3677657A

    公开(公告)日:1972-07-18

    申请号:US3677657D

    申请日:1970-09-03

    发明人: BRUCKER WILLIAM S

    摘要: A portable electric drill including a housing having a motor driven chuck rotatably supported thereon. The chuck is the conventional jaw-type which utilizes a key to open and close the jaws and secure a tool bit therein. A lever on the housing is movable to turn the motor on and rotate the chuck and tool bit, and a novel guard on the housing prevents the chuck from turning should the lever be actuated when the key is in place.

    摘要翻译: 一种便携式电钻,包括具有可旋转地支撑在其上的马达驱动卡盘的壳体。 卡盘是常规的爪型,其利用钥匙来打开和关闭夹爪并将工具钻头固定在其中。 壳体上的杠杆可移动以使电动机转动并旋转卡盘和工具头,并且当钥匙就位时杠杆被致动时,壳体上的新型护罩防止卡盘转动。