US 12,227,949 B2
Drainage system
Neill Robinson-Welsh, Maulden (GB)
Assigned to ACO AHLMANN SE & CO. KG, Budelsdorf (DE)
Appl. No. 17/757,892
Filed by ACO AHLMANN SE & CO. KG, Budelsdorf (DE)
PCT Filed Jan. 7, 2021, PCT No. PCT/EP2021/050161
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2021/140136, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 2000402 (GB), filed on Jan. 10, 2020.
Prior Publication US 2023/0029896 A1, Feb. 2, 2023
Int. Cl. E04D 13/04 (2006.01); E04D 11/00 (2006.01); E04D 11/02 (2006.01)
CPC E04D 13/0409 (2013.01) [E04D 11/02 (2013.01); E04D 13/0477 (2013.01); E04D 11/002 (2013.01); E04D 2013/0413 (2013.01); E04D 2013/0427 (2013.01); Y02B 80/32 (2013.01)] 13 Claims
OG exemplary drawing
 
1. Drainage system (100) comprising an outlet member (10) and a flow restrictor (20),
the flow restrictor (20) is situated above the outlet member (10), the flow restrictor (20) comprises a contact portion (22) and the outlet member (10) comprises a flange portion (12),
a first sealing member (30) is arranged on and/or along the flange portion (12) of the outlet member (10) and a second sealing member (40) is arranged at the contact portion (22) of the flow restrictor (20),
the second sealing member (40) has a central section that extends in a horizontal direction and ends (42) that extend in a vertical direction to form a water storage,
the first sealing member (30) and the second sealing member (40) are arranged partially parallel to each other and spatially separated from each other such that a drainage between the first and the second sealing members (30; 40) into the outlet member (10) is provided;
wherein a drainage member (70) is arranged below the second sealing member (40) to provide a water drainage along an outside of the second sealing member to the outlet member.