EP 0399931 A1 19901128 - Apparatus for remote control of suction or ventilation system.
Title (en)
Apparatus for remote control of suction or ventilation system.
Title (de)
Fernbedienungsgerät für Saug- oder Lüftungssystem.
Title (fr)
Dispositif de commande à distance pour installation d'aspiration ou de ventilation.
Publication
Application
Priority
FR 8906974 A 19890523
Abstract (en)
This apparatus is of the type comprising box 2, a motorized suction turbine 4, connected pneumatically to the outlet orifice 2b of the box, and at least one pipe 6 whose downstream end 6a opens into the box 2, means 13-40 connected to the upstream end 6b of the pipe 6 which are capable of generating a temporary pneumatic pressure wave in the direction of its downstream end 6a, the latter being coupled with means 20-22 of detecting the pressure wave and of reacting on the control unit 23 of the power supply of the electric motor 3 of the suction turbine 4 for putting the installation into operation. <??>According to the invention, the pneumatic pressure wave is carried by the pipe 6 itself from its upstream end 6b to its downstream end 6a, this downstream end being fitted with a closing valve 18, normally kept in the closed position and capable of releasing the opening of the pipe under the effect of the suctional reduced pressure. <IMAGE>
IPC 1-7
IPC 8 full level
A47L 5/38 (2006.01); A47L 9/32 (2006.01); F04D 27/02 (2006.01)
CPC (source: EP US)
A47L 5/38 (2013.01 - EP US); A47L 9/32 (2013.01 - EP US); F04D 27/008 (2013.01 - EP US)
Citation (search report)
- [A] US 3669145 A 19720613 - HOLSTROM ALLAN
- [A] GB 2015652 A 19790912 - PALMOVIST K
- [A] EP 0156011 A1 19851002 - SIEMENS AG [DE]
- [A] GB 191226660 A 19130828 - WAYGOOD & COMPANY LTD R [GB], et al
- [A] WO 8802232 A1 19880407 - ALLAWAY OY [FI]
- [A] US 3083396 A 19630402 - SENNE EDGAR P, et al
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0399931 A1 19901128; EP 0399931 B1 19951025; AT E129393 T1 19951115; CA 2017311 A1 19901123; CA 2017311 C 19940510; DE 69023165 D1 19951130; DE 69023165 T2 19960321; DK 0399931 T3 19960226; ES 2080817 T3 19960216; FI 902493 A0 19900521; FI 93166 B 19941130; FI 93166 C 19950310; FR 2647510 A1 19901130; FR 2647510 B1 19940401; HK 1007480 A1 19990416; US 5191673 A 19930309
DOCDB simple family (application)
EP 90420252 A 19900523; AT 90420252 T 19900523; CA 2017311 A 19900522; DE 69023165 T 19900523; DK 90420252 T 19900523; ES 90420252 T 19900523; FI 902493 A 19900521; FR 8906974 A 19890523; HK 98106801 A 19980625; US 52737290 A 19900523