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EP 0831179 A2 19980325 - Recirculation systems

Title (en)

Recirculation systems

Title (de)

Rückführungs-systeme

Title (fr)

Systèmes de recirculation

Publication

EP 0831179 A2 19980325 (EN)

Application

EP 97307334 A 19970919

Priority

GB 9619716 A 19960920

Abstract (en)

An air transfer system for a suction cleaning vehicle (10) is provided with an air recirculation system (34) which recirculates air and entrained matter from the pressure side of the fan (14) to the inlet region (40) of the matter-collecting tank (12) substantially without passing through the inlet duct to the tank. Dust and other entrained matter is thereby removed from the pressure discharge from the tank and re-enters the tank (12) for collection therein without the need to pass a second time through the nozzle or associated inlet duct of the cleaning vehicle. <IMAGE>

IPC 1-7

E01H 1/08

IPC 8 full level

E01H 1/08 (2006.01)

CPC (source: EP)

E01H 1/0827 (2013.01)

Designated contracting state (EPC)

CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0831179 A2 19980325; EP 0831179 A3 19981209; GB 2317407 A 19980325; GB 9619716 D0 19961106

DOCDB simple family (application)

EP 97307334 A 19970919; GB 9619716 A 19960920