AN IMPROVED DEVICE FOR THE SEPARATION OF AIRBORNE PARTICLES INTO CLASSES BY GRAIN SIZE

AN IMPROVED DEVICE FOR THE SEPARATION OF AIRBORNE PARTICLES INTO CLASSES BY GRAIN SIZE

A device of improved type for the separation of airborne particles by grain size is described. The principle characteristic of the present invention lies in the fact that it comprises: a first base body in which is formed a first cavity on the edge of which rests a plate on which is deposited a filt...

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1. Verfasser: PRODI, VITTORIO
Format: Patent
Sprache:eng
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APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBEMICROSCOPY [SPM]
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
SCANNING-PROBE TECHNIQUES OR APPARATUS
TESTING
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creator PRODI, VITTORIO
description A device of improved type for the separation of airborne particles by grain size is described. The principle characteristic of the present invention lies in the fact that it comprises: a first base body in which is formed a first cavity on the edge of which rests a plate on which is deposited a filter; two second bodies, one inside the other, in such a way as to define between them an annular channel in which is ducted filtered air and communicating with the said first cavity through a second cylindrical cavity defined by the lower surface of a base wall of the said inner second body and the upper surface of the said filter; and an annular nozzle located in the said channel and operable to eject into it a quantity of particle-bearing air in such a way that the particles of dust present in this are deposited on the said filter.
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subjects APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBEMICROSCOPY [SPM]
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
SCANNING-PROBE TECHNIQUES OR APPARATUS
TESTING
title AN IMPROVED DEVICE FOR THE SEPARATION OF AIRBORNE PARTICLES INTO CLASSES BY GRAIN SIZE
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