| 摘要 |
A high-security brief case book in which a case is integrated with a loose-leaf binder whose loose-leaf sheets are he pages of the book. The case is defined by front and rear covers of flexible material such as leather, whose inner edges are hinged to opposing edges of a flat spine. Mounted on the spine is a holder having a series of rings adapted to engage the loose-leaf sheets. The upper end of the holder is spaced from the corresponding end of the spine to provide a site on which is anchored a key-operated locking mechanism whose keyhole lies in a plane normal to the plane of the flat spine whereby only the keyhole is exposed when the book is closed. The lower end of the holder is spaced from the corresponding end of the spine to provide a site on which is secured the leading end of a slide fastener whose trailing end is adjacent the locking mechanism. When the covers are superposed to close the case, the slider of the fastener is then able to run parallel to the free edges of the covers toward the trailing end of the slide fastener where the slider is then engaged by the clamping jaws of the locking mechanism whereby access to the interior of the case is restricted to those holding a key to the locking mechanism.
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