EP 0151905 A3 19860820 - COMPOSITE CHAMBER MADE OF PVC OR OTHER POLYMER MATERIALS
Title (en)
COMPOSITE CHAMBER MADE OF PVC OR OTHER POLYMER MATERIALS
Publication
Application
Priority
IT 51784 U 19840210
Abstract (en)
[origin: EP0151905A2] Conduits for ducts or junctions in services distribution systems for buildings, etc. are assembled from complementary panel profiles made of polymeric materials, esp. PVC, to form the walls (1), cover (3) and opt. base (c) components of square or polygonal section ducts. The edges of the wall panels pref. are stepped to provide complementary semi-interlocking head-to-tail coupling at the intersections of the wall panels. The corners may have external ribs to key the ducts into a surrounding structure. The wall panels pref. also feature a series of concentric circular ribs linked by thin wall zones (1a) to conveniently accept any one of a variety of spigot end sizes of conduit for which the ducts can serve as junctions. Pref. the upper and lower rims of the wall panels are stepped (1f,g) to permit stacking for construction of vertically extended ducts. The interior surfaces of the panels may have ancillary ribs (14) for locating internal baffles, grills, seals etc.
IPC 1-7
IPC 8 full level
E02D 29/12 (2006.01); E03F 5/02 (2006.01)
CPC (source: EP)
E02D 29/12 (2013.01); E02D 29/124 (2013.01); E03F 5/02 (2013.01); E03F 5/024 (2013.01)
Citation (search report)
- [Y] US 3562969 A 19710216 - LITTLE HOWELL P JR
- [Y] US 3415406 A 19681210 - HABGOOD JR ROBERT P, et al
- [A] FR 1524292 A 19680510
- [A] FR 2308003 A1 19761112 - BOURGEOIS ATELIER PIERRE [FR]
- [A] GB 1170136 A 19691112 - HOARE JOHN KENNETH
- [A] FR 2229824 A1 19741213 - DERUDDER ROGER [FR]
- [A] GB 1485757 A 19770914 - YORKSHIRE IMP PLASTICS LTD
Designated contracting state (EPC)
AT BE CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
EP 0151905 A2 19850821; EP 0151905 A3 19860820; IT 8400517 V0 19840210
DOCDB simple family (application)
EP 84830137 A 19840503; IT 51784 U 19840210