发明名称 |
Control device |
摘要 |
The plug of a cylindrical lock includes at each side of its key channel a blind boring communicating with a conical recess in an arresting plate secured to the housing of the lock. The blind boring intersects cylindrical rotary control members arranged for rotation in the plug and each having a diametrical passage coinciding in one angular position thereof with the blind boring. A series of arresting balls is arranged in the blind boring and in respective passages in such a manner as to resume in the aligned position of the members a blocking position in which the terminal ball is in engagement with the conical recess. During the rotation of the plug by a correct key the arresting balls are shifted by the inclined surfaces of the conical recess into the blind boring and the plug is free to rotate. By the insertion of a wrong key at least one passage is misaligned and consequently the terminal arresting ball cannot be removed from its arresting recess.
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申请公布号 |
US4250725(A) |
申请公布日期 |
1981.02.17 |
申请号 |
US19790009694 |
申请日期 |
1979.02.05 |
申请人 |
EVVA WERK SPEZIALERZEUGUNG VON ZYLINDER- UND SICHERHEITSSCHLOESSERN GESELLSCHAFT M.B.H. & CO. |
发明人 |
PRUNBAUER, KURT |
分类号 |
E05B47/00;(IPC1-7):E05B9/04 |
主分类号 |
E05B47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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