Patent ID: 7516522
Filing Date: 2009-04-14
Classification: F01N,F16L,Y10T

Abstract:
1. A clamping collar comprising an open ring, each end of which carries a bearing tab comprising a bore, and tightening means comprising a tightening bolt, a nut, and a spacer, the bolt having a shank that passes through the bores in the bearing tabs and a head situated beside one of the bearing tabs, the nut being situated beside the other bearing tab, and co-operating with the shank of the bolt, at least a first one of the two elements constituted by the head of the bolt and by the nut being suitable for being driven in rotation so as to tighten the bolt, and the spacer being disposed between said first element and the bearing tab beside which said first element is situated and being formed by a rolled-up blank disposed around the shank of the bolt, wherein the bearing tab against which the spacer is disposed further comprises a lip and wherein a join plane disposed between the two ends of the blank from which the spacer is formed is engaged under said lip.