DISPOSITIF POUR MAINTENIR UN ZONE LIBRE DE POUSSIERES ET DE BACTERIES DANS UN LOCAL

摘要

1349718 Air curtains SVENSKA FLAKTFABRIKEN AB 29 June 1971 [1 July 1970] 30478/71 Heading F4V The subject-matter of this Specification is essentially the same as Specification 1,349,717, but the distributing channel for the air curtains has a circular hole 17 at the corner of the nozzles, for the passage of a separate air jet to keep together two meeting air curtains. Alternatively, for a channel with double air curtains, a slot 14 is provided in each corner of the channel 3.