发明名称 Binary Coded Key and Tamper Resistant Latch
摘要 A latch has a bushing which has at least one bushing projection or means for preventing insertion of an unauthorized tool to rotate a latch actuator of the latch. Only a key having an outer key recess which can mate with bushing projection on the bushing permits insertion of the key. The cap subassembly of the latch is provided with projections which are of a size and so positioned as to correspond with the internal recesses of the key so as to allow the cap subassembly to enter into the bore of the key and permit a mating engagement of internal recesses on the key and projections on the cap subassembly. Because cap portion rotates freely on top of the cap subassembly which is the part of the cap driven by the key, the arrangement makes it impossible, or at least very difficult, to rotate the shaft and in turn the pawl by means of a tool which rotates the cap portion.
申请公布号 US2008105014(A1) 申请公布日期 2008.05.08
申请号 US20070855796 申请日期 2007.09.14
申请人 VICKERS JAMES H 发明人 VICKERS JAMES H.
分类号 E05B19/02 主分类号 E05B19/02
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