Patent ID: 6606888
Filing Date: 2003-08-19
Classification: F16K,G05G,Y10T

Abstract:
An anti-pilfer lock device for protecting against unauthorized access the flow control valve units projecting from the outer surface of an ammonia nurse tank and comprising:a housing configured to be removably mounted on the nurse tank in a position shielding the flow control valve units from unauthorized access; and lock structure including a lock assembly which is accessible externally of the housing, and components releasably joined to the lock assembly and engageable with at least one of the control valve units and cooperable with the housing for maintaining the housing in said flow control valve unit shielding position until the lock assembly is unlocked and the housing is removed from the nurse tank, said components including a coupling element that is positioned adjacent to the flow control valve units, a connector assembly for connecting the coupling element to at least one flow control valve unit, and an extension releasably joining the coupling element and the lock assembly when the housing is mounted on the nurse tank in said control valve unit shielding position.