EP 4004959 A1 20220601 - PYROTECHNIC CUT-OFF DEVICE
Title (en)
PYROTECHNIC CUT-OFF DEVICE
Title (de)
PYROTECHNISCHE ABSCHALTVORRICHTUNG
Title (fr)
DISPOSITIF DE COUPURE PYROTECHNIQUE
Publication
Application
Priority
- FR 1908466 A 20190725
- FR 2020051315 W 20200721
Abstract (en)
[origin: WO2021014088A1] The invention relates to a pyrotechnic cut-off device (100) comprising: a pyrotechnic initiator (20), a conductive portion (40) and a movable piston (30), the piston being able to move in a cavity (14) in a movement direction (A) following the activation of the pyrotechnic initiator between a first position allowing the current to flow in the conductive portion and a second position allowing the current to be cut-off, characterised in that the piston (30) defines a first sealing portion (33) having a narrowing cross-section in the movement direction (A), and in that the cavity (14) has a wall defining a second sealing portion (14b), which extends on either side of the conductive portion (40) and which has a narrowing cross-section in the movement direction (A), the first sealing portion (33) being in contact with the second sealing portion (14b) along a contact surface extending on either side of the conductive portion (40) when the piston is in the second position.
IPC 8 full level
H01H 39/00 (2006.01)
CPC (source: EP US)
H01H 39/006 (2013.01 - EP US); H01H 2039/008 (2013.01 - EP US)
Citation (search report)
See references of WO 2021014088A1
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 2021014088 A1 20210128; EP 4004959 A1 20220601; EP 4004959 B1 20230621; FR 3099287 A1 20210129; FR 3099287 B1 20230630; US 11482391 B2 20221025; US 2022262587 A1 20220818
DOCDB simple family (application)
FR 2020051315 W 20200721; EP 20754004 A 20200721; FR 1908466 A 20190725; US 202017597768 A 20200721