US 12,065,820 B2
Draining device
Yulong Liu, Shanghai (CN)
Assigned to Shanghai Biaopu Industrial Co., Ltd., Shanghai (CN)
Appl. No. 17/266,719
Filed by SHANGHAI BIAOPU INDUSTRIAL CO., LTD., Shanghai (CN)
PCT Filed Aug. 8, 2019, PCT No. PCT/CN2019/099705
§ 371(c)(1), (2) Date Feb. 8, 2021,
PCT Pub. No. WO2020/030023, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 201810896415.X (CN), filed on Aug. 8, 2018.
Prior Publication US 2021/0301951 A1, Sep. 30, 2021
Int. Cl. F16L 55/24 (2006.01); E03F 1/00 (2006.01); E03F 3/04 (2006.01); E03F 5/04 (2006.01); F16L 11/04 (2006.01)
CPC E03F 1/002 (2013.01) [E03F 3/04 (2013.01); E03F 5/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A draining device, comprising a permeable wall body that comprises a plurality of ribs, wherein a cross section of the ribs in a first direction is in a wave shape, and a wave amplitude of the cross section gradually changes, from a first side to a second side, in a second direction, so that the ribs have alternating wave crest parts and wave trough parts at either side of the first direction, the wave crest part of one rib, among two adjacent ribs is opposite to the wave trough part of the other, the first direction intersects the second direction, and the second direction is a thickness direction of the permeable wall body.