Safety fork, has single-piece body fixed with tubular seat element, locking unit provided with bearing element and backrest element, and tubular backrest and support connected with chair, where backrest and support are hinged together
摘要
<p>The fork has a single-piece body (4) fixed with a tubular seat element (1) and made of elastic material. A tubular backrest (2) and a support (3) are connected with a chair, where the tubular backrest and the support are hinged together. A locking unit is provided to a bearing element and a backrest element. The single-piece body is provided with an enclosed pocket that is mounted on an end of the tubular seat element. The tubular seat element is secured by a pin (P1).</p>
