초록 ▼

There is described a tamper-proof fastener for use in security applications, the fastener comprising inner and outer members interconnected by flexible straps. The inner and outer members each comprise a leading end, a shank, and a trailing end, the shank of the outer member consisting of two substa

There is described a tamper-proof fastener for use in security applications, the fastener comprising inner and outer members interconnected by flexible straps. The inner and outer members each comprise a leading end, a shank, and a trailing end, the shank of the outer member consisting of two substantially parallel legs defining between them an open-sided passage which contracts towards the leading end, and the leading end of the outer member consisting of two limbs which define between them an open-sided space and converge to a tip where they are interconnected, each limb being connected to a respective leg and presenting an external shoulder facing away from the tip and an internal shoulder facing towards the tip, the trailing end of the outer member including outwardly extending portions presenting an external shoulder facing the leading of the outer member. The inner member is initially positioned so that its leading end lies in the open-sided passage, the leading of the inner member is capable of moving longitudinally to a position within the leading end of the outer member, shoulders formed on the leading end of the inner member then engaging the internal shoulders of the outer member to resist removal of the leading end of the inner member from the leading of the outer member.

대표청구항 ▼

A fastener comprising an inner member and an outer member each having a leading end, a shank, and a trailing end, the shank of the outer member consisting of two substantially parallel legs defining between them an open-sided passage which contracts towards the leading end, and the leading end of th

A fastener comprising an inner member and an outer member each having a leading end, a shank, and a trailing end, the shank of the outer member consisting of two substantially parallel legs defining between them an open-sided passage which contracts towards the leading end, and the leading end of the outer member consisting of two limbs, which define between them an open-sided space and converge to a tip where they are interconnected, and which are each connected to a respective leg and present an external shoulder facing away from the tip and an internal shoulder facing towards the tip, and the trailing end of the outer member including outwardly extending portions presenting an external shoulder facing the leading end of the outer member, the leading end of the inner member being capable of fitting in the space within the leading end of the outer member, with shoulders on the inner member co-operating with the internal shoulders on the outer member, the length of the shank of the inner member being such that the trailing end of the inner member is positioned adjacent the trailing end of the outer member when the leading end of the inner member is within that of the outer member, the inner and outer members being joined by flexible straps extending from the leading end of the inner member to the limbs of the leading end of the outer member, the two members and the straps being an integral moulding of plastics material.