Patent ID: 8336172

Claim:
A clamping collar comprising: a) a belt comprising a strip and two free ends, at least one of said ends being curved back to form a loop, said loop being defined by an outer belt portion and by an underlying inner belt portion, said outer belt portion and said inner belt portion being spaced apart from each other to form the loop; and b) a tightening system comprising a shank, the tightening system co-operating with said loop so as to tighten said belt; wherein said at least one free end forming the loop is curved back towards an inside of the collar, wherein said inner belt portion is extended beyond the loop, under said strip, and wherein said outer belt portion delimiting the loop defines a tightening wall with which the tightening system comes into engagement, said loop having a first opening provided in the tightening wall and a second opening aligned with the first opening, the first and second openings being spaced apart from each other, and the shank of the tightening system being engaged in said openings and passing through said loop, whereby the forces exerted by the tightening system are exerted on the outer belt portion of the loop, via an outside of the loop.