Patent ID: 7062821

Claim:
A clamping collar comprising: a metal strip rolled up on itself into a generally annular form and having first and second ends respectively provided with a hook and with a lug each of which project radially outwards from the rolled up strip, said collar being constructed and arranged to assume one of a clamped position in which the hook is engaged with the lug such that the hook is radially outward of the lug, and an unclamped position in which the hook and the lug are disengaged from one another, the first end of the strip having a tongue portion secured thereto which, in the unclamped position extends along a circumferential periphery of the strip in the unclamped position between the hook and the lug, the lug having a free edge which opposes the hook in the unclamped position, the tongue including at least one retaining member which lies disposed in a cavity defined on a radially inward side of the lug in the unclamped position such that the at least one retaining member cooperates with the free edge of said lug to define pre-hooking means for retaining the tongue relative to the second end of the strip in the unclamped position in order to prevent opening of said collar.