A LOCK

摘要

The invention relates to a lock apparatus for mounting on a closure having internal and external faces, comprising a body (2) defining a cylindrical bore (3) and having internal and external (in use) spaced cylinder parts (4,5) mounting therebetween a rotatable cam (6) having a bore (7) aligned with the cylindrical bore (3) and adapted for operating a locking mechanism of a closure, characterised by stop means (7a) associated with the cam (6) and the internal cylinder part (4) whereby to obviate operation of the lock apparatus (1) when the lock apparatus is vandalised.