Patent ID: 6244080
Filing Date: 2001-06-12
Classification: E05B,Y10T

Abstract:
In combination, an object having an engaging slot with two opposed ends and an antitheft lock assembly comprising a lock main body, a binding wire rope extending from the lock main body to become wound around an immovable object, the lock main body having a rotary hook shaft extending from it and said rotary hook shaft including an axial core rod and an extreme anchor section extending laterally from the axial core rod and a single anti-revolution arm also extending from the lock main body in parallel with the axial core rod, said axial core rod being outwardly laterally spaced from an exterior lateral surface of said anti-revolution arm, the rotary hook shaft and the anti-revolution arm being simultaneously insertable together into said engaging slot of said object to be protected against theft, said anti-revolution arm and said axial core rod being slidably mounted in said engaging slot along a longitudinal axis of said engaging slot, the rotary hook shaft being rotatable by a predetermined angle by operating a matching key in a cylinder lock of the lock main body to make the extreme anchor section nonremovable from the object through the engaging slot so that in the unlocked state, both the axial core rod of the rotary hook shaft and the single anti-revolution arm are simultaneously inserted in the engaging slot of the object to be protected against theft with a gap formed at one or both opposed ends of the engaging slot between the one or both opposed ends of the engaging slot and said anti-revolution arm and said axial core rod at least one gap being approximately one-third of the length of said engaging slot and the extreme anchor section is directed toward one of the opposed ends of the engaging slot whereas, in the locked state, the extreme anchor section is directed in a different direction so as to become nonremovable through the slot.