Retaining system`s carrier for e.g. rack system, has extensions including undercuts in respective regions which are turned towards each other, where undercuts form retaining region, which is tapering outward of profile

摘要

The carrier (2) has a profile (3) e.g. hollow square profile, oriented in a direction of a longitudinal axis of the carrier and extensions (12-15) extended in X-shape from the profile. The extensions include contact surfaces (22, 23) to provide a contact plane (47), which is oriented parallel to the longitudinal axis. The extensions include undercuts (26, 27) in respective regions, which are turned towards each other. The undercuts form a retaining region, which is tapering outward of the profile. An independent claim is also included for a retaining device for formation of a fastener at a carrier.