| 摘要 |
PCT No. PCT/FI84/00019 Sec. 371 Date Nov. 2, 1984 Sec. 102(e) Date Nov. 2, 1984 PCT Filed Feb. 21, 1984 PCT Pub. No. WO84/03428 PCT Pub. Date Sep. 13, 1984.This invention relates to a mounting piece for the suction hose of a central vacuum cleaning system. In order to prevent objects that could possibly clog the suction piping from getting into the piping, there is on the inner wall (2) of the mounting piece (1) at least one rib (3) pointing inwards from the inner wall which prevents objects that would clog the suction piping (5) from getting into the suction piping (5). The surface of the rib (3) or ribs (3) that meet the flow are preferably inclined towards the central axis of the mounting piece. |
