EP 0202717 B1 19881005 - BURIED ASSEMBLY HAVING A SIGNALLING DEVICE
Title (en)
BURIED ASSEMBLY HAVING A SIGNALLING DEVICE
Publication
Application
Priority
FR 8507608 A 19850521
Abstract (en)
[origin: US4714021A] This buried system (1), which comprises a signalization device (2) constituted by a telescopic arrangement (3) of coaxial tubes (4,5,6,7) by means (8) for increasing the internal pressure in order to develop the telescopic arrangement (3) and by means (9) for controlling the increase of the internal pressure at a given instant, is characterized in that it moreover has means (12) for obtaining the tightness of the telescopic arrangement (3) at the level of the coaxial tubes (4,5,6,7) and a means (13) for ensuring the maintenance of the tightness during the development of the telescopic arrangement (3). The means (12 and 13) cooperate advantageously to impose the development of the coaxial tubes (4,5,6,7) in a determined order of succession, which improves the rigidity of the device and permits of obtaining a systematic emergence of a part of the latter into the open air.
IPC 1-7
IPC 8 full level
F42B 23/24 (2006.01); F42C 1/14 (2006.01)
CPC (source: EP US)
F42B 23/24 (2013.01 - EP US); F42C 1/14 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0202717 A1 19861126; EP 0202717 B1 19881005; DE 3660875 D1 19881110; FR 2582428 A1 19861128; FR 2582428 B1 19870626; US 4714021 A 19871222
DOCDB simple family (application)
EP 86200854 A 19860520; DE 3660875 T 19860520; FR 8507608 A 19850521; US 86416786 A 19860516