Document Type and Number:
Japanese Patent JPS5047443
Kind Code:
A
Abstract:
A down-flow chamber in which, from a filter in the ceiling of a working room, a germfree and dustfree flow of air is directed downwardly to a working face that is surrounded by walls with exhaust openings for the flow of air at the edges and in which, at the front, a transparent wall is mounted. Between the lower edge of the transparent wall and an exhaust grid in front of the working face there is a vertical opening of such a height that arms can be put through the opening to be able to carry out operations in the working room, wherein at the lower edge of the transparent wall a flexible lid preferably of smooth plastics material is mounted that is hanging down and is substantially extending to the exhaust grid. Further, a device is provided on the chamber that prevents the lid from moving outwardly from the vertical plane through the opening.
Application Number:
JP13210973A
Publication Date:
April 26, 1975
Filing Date:
November 24, 1973
Export Citation:
International Classes:
F24F7/06; B01L1/00; B08B15/02; B25H1/20; C12M1/00; F24F3/16; (IPC1-7): F24F7/06