Patent ID: 7140210

Claim:
A lock, comprising: a housing having a hole at an end thereof; a lock post having a first end fixed within the housing and a second end extending out through the hole; wherein the lock post has a retaining bar with planar sides at the second end thereof transverse to the axis of the lock post; two close posts having respective first ends fixed to a plate slidably engaged in the housing and second ends extending out of the through hole along opposite sides of the lock post which are respectively coplanar with corresponding opposite sides of the retaining bar; an annular control device rotatably engaged on the housing and having two spiral slots on an inside wall thereof, wherein said plate has two protrusions respectively engaged in said two spiral slots, wherein rotation of the control device moves the plate in the housing; an elastic device in the housing having opposite ends engaged between the housing and the plate to bias the plate and the close posts outward; a lock mechanism in the housing engaged to the plate to hold the close posts in a fully extended position outside the housing when locked and permit the plate and close posts to be drawn into the housing from the fully extended position by the annular control device when unlocked; a cable fastened to the housing and having a loop of a distal end thereof.