SWIMMING POOL Russian patent published in 2003 - IPC

FIELD: construction industry. SUBSTANCE: swimming pool has hermetically sealed casing and overflow trough extending along perimeter thereof and used as component of water filtration system. Front wall of overflow trough facing swimming pool reservoir is arranged at the level below its rear wall and equipped with flexible floating mat oriented inside overflow trough. Covers for closing overflow trough are provided with partitions mounted on cover internal sides and extending longitudinally of side walls. Partitions have wedge-shaped parts directed downward and having one side faced to swimming pool reservoir and adapted for passage of waves inside overflow trough and other side directed toward overflow trough. Inclined end surfaces of partitions are cooperating with working surface of flexible floating overflow mat for preventing water from flowing back into swimming pool reservoir. While raising together with raising water in overflow trough and abutting against partitions end surfaces overflow floating mat form variable height barrier with "sloping bank" outgoing toward swimming pool and facilitating flowing of incident waves into overflow trough reservoir. Water level difference between swimming pool reservoir and overflow trough reservoir is used for circulation of water through filtering materials extending along overflow trough bottom and for returning of clean water into swimming pool reservoir. EFFECT: reduced production and maintenance cost of water filtering system and provision for operation thereof in case of inaccessibility or impossibility of employment of electric power. 4 dwg