Title:
DRAINAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/030023
Kind Code:
A1
Abstract:
A drainage device. The drainage device may quickly discharge infiltrated water and/or rainwater, is adapted to different construction requirements, and comprises a water permeable wall body (11). The water permeable wall body (11) comprises a plurality of ribs (12), wherein the section of the rib in a first direction is wavy and the wave amplitude of the section from a first side to a second side in a second direction is gradually changed, so that the rib (12) comprises wave crest portions and wave trough portions which are alternated on either side of the first direction, and the wave crest portions of one rib of adjacent ribs and the wave trough portions of the other rib are opposite to each other, the first direction intersects the second direction, and the second direction is a thickness direction of the water permeable wall body.
Inventors:
LIU YULONG (CN)
Application Number:
PCT/CN2019/099705
Publication Date:
February 13, 2020
Filing Date:
August 08, 2019
Export Citation:
Assignee:
SHANGHAI BIAOPU IND CO LTD (CN)
International Classes:
E03F3/04; E03F5/04; F16F1/04
Foreign References:
| CN208594612U | 2019-03-12 | |||
| CN208634254U | 2019-03-22 | |||
| CN202610946U | 2012-12-19 | |||
| CN201165702Y | 2008-12-17 | |||
| JPH0932094A | 1997-02-04 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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