| 摘要 |
Fasteners for decorative attachments to railings, gratings and the like, such as, in particular, finials attached to the tops of standards of railings, and friezes attached to and/or wrapped-around the sides of standards or posts of railings and to the standards or posts that are the cross-members of gratings, according to the present invention, are constituted of annular bodies made from a material having elastic properties. The annular fastener bodies are fabricated as parts having either an integral, single-piece construction or as sectional, multi-piece parts. Each annular fastener body has an external surface and an internal surface, on which surfaces parallel protrusions are present, which are sequentially arranged in the form of saw-tooth indentations that are inclined, with the ones on the external surface being oriented in a first direction and the ones on the internal surface being oriented in the opposite direction, with respect to a longitudinal axis of symmetry through the annular fastener bodies. The fasteners are pressure-fitted between the peripheral surfaces of holes in the attachments, and the external surface of standards, with the saw-tooth indentations on the fastener body being in contact with the attachment or standard and are oriented in such a way with respect thereto as to facilitate pressure coupling and to prevent subsequent detachment.
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