Patent ID: 6612455
Filing Date: 2003-09-02
Classification: B65D,F16L

Abstract:
A cap lock system for use with a threaded cylindrical end of an access or security device, said cap lock system comprising:an outer cap having an upper endwall with a keyhole therethrough, said keyhole having a journal-bearing section defining a key pivot axis, and a cylindrical cap sidewall extending down from the upper endwall to an open lower end, said open lower end leading into a cap cavity defined by the outer cap sidewall; an inner lock telescopically and captively received within the cap cavity of the outer cap with a radial clearance therebetween to enable free rotation about a central axis of rotation, said inner lock having a cylindrical lock sidewall extending between a top end and an open bottom end, said top end having an annular flange surrounding a recessed cavity which is in communication with the keyhole, and said open bottom end leading into an internally-threaded cavity defined by the lock sidewall for threadedly receiving the threaded cylindrical end of the access or security device when rotated about the central axis of rotation; and a key having a pivot shaft extending to a leading end, a tab radially connected to the pivot shaft at the leading end, and a key handle for applying a torque on the pivot shaft, said pivot shaft for matingly inserting into the journal-bearing section of the keyhole to pivot about the key pivot axis, and said tab for inserting through the keyhole into the recessed cavity and for pivotally exerting a transverse force against the annular flange when a torque is applied on the pivot shaft, whereby the inner lock is offset with respect to the outer cap and wedged against the outer cap so as to transfer the applied torque to the inner lock.