Roller bolt for window or door-locking mechanism, has roller including metal casing, which carries synthetic jacket that is provided with collar, which is of strength of jacket, where roller has plastic case
摘要
<p>The bolt has a roller supported on a flange bolt. The roller (2) consists of a metal casing, which carries a synthetic jacket (8). The jacket is provided with a collar (10) situated in a free end of the flanged bolt and facing outwards, where the collar is of the strength of the jacket. The roller consists of a plastic case. The metal casing is provided with a radial constriction.</p>
