| 摘要 |
<p>A device for restricting the opening motion of a door comprises a housing (4) for securing to the door and having an opening (6) facing the floor over which the door moves when it is opened and closed. A pivotally movable cam member (5, 5') is mounted within the housing so that it can pivot between an operating position in which it extends through the opening to engage with the floor and prevent opening movement of the door and a retracted position in which it is spaced from the floor. Means (18, 21, 18', 21') are provided for moving the cam member between its operating and retracted positions.</p> |
