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US 4,201,556 AGranted
Device for cleaning fabric filters
OwnerMats A. Olssoninventor
Life of this patent
Estimating the term…
Abstract
A device for cleaning a fabric filter from adhering dust comprises a loud speaker element forming a dividing wall or a part of such a wall between a chamber receiving the filter, and an open resonator which communicates with the chamber.
Claims5
A device for cleaning a filter by vibrations caused by sound waves generated at a predetermined frequency, comprising:
- (a) a first chamber within which said filter is disposed;
- (b) a closed second chamber having at least one portion forming a resonator tuned to said predetermined frequency;
- (c) a partition wall, one side of which forms a boundary of said at least one portion;
- (d) sound wave generating means disposed in said partition wall for generating sound waves at said predetermined frequency on opposite sides of said partition wall;
- and
- (e) means communicating said at least one portion with said first chamber.
3 more elements
Dependencies are inferred from the claim text.