| 摘要 |
A door latch including a two part keeper element and a latch element. Each part of the keeper element is L-shaped. The longer legs of each part are secured to the edge of a door and door frame, respectively, in back to back relation so that when the door is closed, the shorter legs of each part are in abutment in a vertical plane parallel to but spaced from the door. The latch element includes a hollow sleeve slid over the keeper element parts to retain them together precluding the door from being opened unless the sleeve is removed.
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