(19)
(11) EP 4 179 161 A1

(12)

(43) Date of publication:
17.05.2023 Bulletin 2023/20

(21) Application number: 21758131.3

(22) Date of filing: 07.07.2021
(51) International Patent Classification (IPC): 
E03F 3/02(2006.01)
E03F 5/20(2006.01)
 E03F 5/10(2006.01)
(52) Cooperative Patent Classification (CPC):
E03F 3/02; E03F 5/106; E03F 5/108; E03F 5/20; E03F 9/007
(86) International application number:
PCT/IB2021/000437
(87) International publication number:
WO 2022/008969 (13.01.2022 Gazette 2022/02)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 07.07.2020 CZ 20200394

(71) Applicant: Water Design Group Ltd
Manchester OL9 6HZ (GB)

(72) Inventor:
  • SEMERÁD, Petr
    392 01 Sobeslav (CZ)

(74) Representative: Danek, Vilém 
Danek & Partners Vinohradská 17
120 00 Praha 2
120 00 Praha 2 (CZ)

   


(54) GRAVITY SEWER DEVICE - SELF-FLUSHING INVERTED SIPHONS, METHOD OF OVERCOMING WATERCOURSES OR SIMILAR UNDERGROUND OBSTACLES AND USE OF THIS DEVICE