FEDERAL CHARACTERISTICS FOR BRILLS WITH SECURITY REGULATION

摘要

An elastic hinge comprising, at the end of a temple, a box-like portion which contains a spring which is kept compressed against its bottom by a body which can slide with respect to the box-like portion and is associated with a head which protrudes from the box-like portion and is adapted to abut against a first hinge component which partially retains it inside the box-like portion. The head and the first hinge component are cam-shaped, so as to form open and closed positions for the temple. The hinge comprises a retention element which is operatively interposed so that it can slide axially between the spring and the body and has an external portion whose radial dimensions are larger than corresponding undercuts which are provided in the box-like portion and act as stroke limiters for the retention element in the direction in which the spring pushes. The external portion is shaped so as to move beyond the undercuts when the retention element is inserted in thebox-like portion. The retention element retains the spring insidethe box-like portion even when the body exits completely from it.