GEOEFFNETE RINGFEDER FUER DRUCKKNOEPFE UND VERFAHREN FUER IHRE HERSTELLUNG.

摘要

A split ring spring (30) for snap fasteners has a burr (29) extending from each end of the ring spring in a direction parallel to the imaginary central axis of the ring spring. When a stud member (34) is snapped with a socket member (31) in which the split ring spring (30) is incorporated, the burrs (29) do not damage or scar a body (33) of the stud member (34). The ring spring (30) having such unobjectionable burrs (29) is produced by feeding a length (12) of a strip (13) of resilient material transversely across a mandrel (11), then severing the length (12) off the strip (13) in a direction parallel to the longitudinal axis of the mandlel (11) while holding the length (12) on the mandlel (11), and thereafter bending the severed length (12) of strip around the mandrel (11).