Patent ID: 8443492

Claim:
A clamping collar made from a metal strip formed into a loop, comprising: a projection disposed at a vicinity of a first end of the metal strip, projecting radially outwards form an outer major surface of the metal strip, the projection having a width that is less than a width of the outer major surface, the projection including: a fastening stud projecting radially outwards in the vicinity of the first end of the metal strip, a foot portion disposed on a side of the projection towards the first end, and a first engagement surface for engaging with a tightening tool, the first engagement surface disposed on a side of the projection away from the first end, wherein the projection has side walls that extend continuously over respective longitudinal sides of the projection, and the side walls form common side cheeks of the fastening stud and the first engagement surface, each of the common side cheeks extending radially from the outer major surface, and each of the common side cheeks is connected to each of side margins that extend along the outer major surface; and an ear disposed at a vicinity of a second end of the metal strip, projecting radially outwards form the outer major surface of the metal strip, the ear having a hole through which a free end portion of the fastening stud can pass so that the fastening stud projects beyond the hole to fasten and tighten the clamping collar while the ear fits over the foot portion, the ear including a second engagement surface for engaging with the tightening tool, the second engagement surface disposed on a side of the second projection away from the second end.