| 摘要 |
It comprises a chamber which can be embedded into a wall, equipped with an access opening with closure door and security means. This door consists of a plate independent of the chamber, equipped on its rear surface with parallel guides, on each one of which is mounted a lock equipped with a tab which projects on the front surface of the plate via grooves made in said plate. All the locks can be displaced between a locking position, in which they project from the edges of the plate, in order to remain behind the wall of the chamber, and another position, of retraction, in which said locks do not project with respect to the edges of the plate. The locks are all of equal length, but with the tab located at a different distance from their ends. <IMAGE>
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