Patent ID: 6997489

Claim:
A pull-tight one-piece security seal, adapted for closing bags or the like, comprising: an operating portion having a first end and a second end and, between said ends, a contact region adapted for contacting a neck region of a bag; a substantially flat closure strap, united at a first end to the operating portion, which extends away from the first end of the operating portion to a second free end, it being provided along its length with through-orifices that permit it to be immobilized in relation to the operating portion when it is passed around the neck of the bag to form a loop and the seal is closed; and a lever member extending from and integral with the second end of the operating portion at a hinge region, the lever member being foldable over the operating portion, on an opposite side of the latter in relation to the contact region, the lever member having a security locking formation for secure locking co-operation with a corresponding security locking formation on the operating portion when the seal is closed and the lever member further having a through-opening, spaced from said hinge region, for passage of the closure strap, and an immobilizing tooth for passing through and co-operating with one of the closure strap through-orifices to determine the effective length of the said closure strap when the seal is closed, at least one of the security locking formations passing through another of the closure strap through-orifices prior to said secure locking co-operation between the locking formations when said lever member is folded over the operating portion to tighten said loop.