| 摘要 |
The present invention relates to an improvement in non destructible cylinder locks. A reinforcing system comprising two reinforcing members in the form of pins (18,19) are embedded in a flat portion (13). Said reinforcing members, located at opposite sides of the bridge-like screw hole portion (16), are connected to each other by means of a non-extensible hollow fixing device (20), fixedly attached to the pin heads and extending in the form two arms (21) around each pin head. Additionally, an extensible element (23) is laid in the form of a high tensile strength structure in between the two pin heads and across the surface defined by said non-extensible hollow fixing device (20). The positions at which the two pins (18,19) are located fall outside the space defined by the projection lines of the notch in which the pawl is situated. |
