EP 3924658 A2 20211222 - FLEXIBLE PIPELINE
Title (en)
FLEXIBLE PIPELINE
Title (de)
FLEXIBLE ROHRLEITUNG
Title (fr)
CANALISATION SOUPLE
Publication
Application
Priority
- RU 2019103962 A 20190212
- RU 2020000061 W 20200207
Abstract (en)
[origin: WO2020167165A2] The flexible pipeline contains elastic hose (1) with external reinforcing spiral winding (14), connecting fittings at each end of the elastic hose in the form of a through connecting outlet or input fittings (3, 4), respectively, and one of two identical couplings (2). Corresponding end of hose (1) is sealed between each connecting pipe (3, 4) and coupling (2). Each coupling (2) is hollow with internal spiral groove (10) along the longitudinal axis of symmetry of coupling (2). Spiral groove (10) of coupling (2) has a turn pitch equal to the turn pitch of spiral winding (14) of the hose. Each end of hose (1) is screwed completely into coupling (2). Each connecting pipe (3) and (4) is made with a cylindrical surface, pressed coaxially into coupling (2) into the corresponding end of elastic hose (1) in the area of the latter screwed into coupling (2), and with the threaded part protruding outward. At the same time, at each end of elastic hose (1), connecting pipe (3 or 4) and corresponding coupling (2) are fixed from mutual movement by means of retaining ring (5) installed in a groove made on the outer surface of connecting pipe (3 and 4) and protruding into windows (13) made in coupling 2 wall. The cylindrical surface for pressing in each connecting pipe (4, 5) is made inclined with conical protrusions. Elastic hose (1) is made of plasticized food-grade polyvinyl chloride and with external spiral wire winding (14) made of polyvinyl chloride (PVC). The retaining ring (5) is made split of the spring material, with flat side surfaces supported on walls (10, 11) of the windows of coupling (2) and with a cut, which ends protrude into window (13) made in coupling (2) wall. The advantage is durability, since the hose is reliably sealed between the coupling and the connecting pipe, as well as the convenience and speed of installation of the pipeline.
IPC 8 full level
F16L 11/00 (2006.01); F16L 21/00 (2006.01)
CPC (source: EP)
F16L 11/10 (2013.01); F16L 11/115 (2013.01); F16L 19/0218 (2013.01); F16L 19/025 (2013.01); F16L 33/24 (2013.01); F16L 37/0885 (2019.07)
Designated contracting state (EPC)
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 state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020167165 A2 20200820; WO 2020167165 A3 20200924; EA 202100191 A1 20211123; EP 3924658 A2 20211222; EP 3924658 A4 20221102
DOCDB simple family (application)
RU 2020000061 W 20200207; EA 202100191 A 20200207; EP 20756329 A 20200207