Control ring

Abstract

The invention concerns a control ring to verify a fastener comprising an enlarged head and a cylindrical shaft extending along an axis, the shaft comprising at least one band of coating parallel to axis (A), the band extending over a circumferential width. The ring comprises a cylindrical tubular body extending along an axis of revolution (B) and two opposite extremities, a first extremity comprising two adjacent arc segments, each arc segment having an end wall extending in a plane perpendicular to the axis of revolution (B) of the ring, the planes of the two walls not being one and the same and axially offset from the first extremity. Each arc segment comprises at least one side wall extending over a radial plane going through the axis of revolution (B) of the ring. The width of an arc segment makes it possible to verify a minimum band width, and the width of the two arc segments makes it possible to verify a maximum band width. The invention also concerns a method for controlling a fastener with said control ring.

Dependencies are inferred from the claim text.