EP 0685691 A3 19970219 - One-way shutter with low pressure loss for ventilation devices in general.
Title (en)
One-way shutter with low pressure loss for ventilation devices in general.
Title (de)
Einwegklappe für Lüftungseinrichtungen mit geringem Druckverlust.
Title (fr)
Volet unidirectionnel avec basses pertes de pression pour dispositif de ventilation en général.
Publication
Application
Priority
IT MI940393 U 19940602
Abstract (en)
[origin: EP0685691A2] A one-way shutter with low pressure loss for ventilation devices in general, comprising, on the outlet (2) that discharges the air stream generated by the ventilation device, a membrane (1) made of flexible material which is supported in a median portion (10) by a cross-member arranged substantially vertically, and rests perimetrically on an abutment edge (30) formed by the discharge outlet (2) when the ventilation device is inactive. <IMAGE>
IPC 1-7
IPC 8 full level
F24F 13/14 (2006.01)
CPC (source: EP)
F24F 13/14 (2013.01); F24F 13/1413 (2013.01)
Citation (search report)
- [X] DE 3720821 A1 19890105 - SCHMITZ & SCHULTE GMBH & CO KG [DE]
- [X] US 3831628 A 19740827 - KINTNER E, et al
- [X] US 1438161 A 19221205 - ZIMMERMAN HENRY J
- [A] US 2800920 A 19570730 - SMITH EDWARD M
Designated contracting state (EPC)
BE CH DE FR IT LI LU NL
DOCDB simple family (publication)
EP 0685691 A2 19951206; EP 0685691 A3 19970219; IT 233463 Y1 20000128; IT MI940393 U1 19951202; IT MI940393 V0 19940602
DOCDB simple family (application)
EP 95107802 A 19950522; IT MI940393 U 19940602