摘要 |
<p>The spacer elements (4,5) have sections (12,13), which are formed such that both sections are connected to each other by a clamping lock. The sections have circular cross-sections and openings. A holding device is equipped for fixing the two sections and for preventing the turning of sections. The spacer elements are manufactured from plastic material. An independent claim is also included for a filter device with a clamping device.</p> |