Fluid bed dryer filters

Details Fluid bed dryer filters Fluid bed dryer filters

2011-07-26

2011-07-26

Smith, Duane (Department: 1776)

Gas separation

Multiple bag type filters in chamber

C055S378000, C055S381000, C055S484000

Reexamination Certificate

active

07985270

ABSTRACT:
A fluidised bed filter comprises a drying pan, and a filter assembly having a membrane over the pan, and a plurality of openings in the membrane. A filter bag is secured to each aperture by means of a clamping ring attached to the rim of the respective aperture, and cooperating with a clamping band within the cuff of the bag. The material of the bag is clamped between the ring and the band. The ring is covered in a cloth strip, which is folded over to produce a flap, which is stitched between the layers of a double fabric forming the membrane. The band is retained in a tunnel formed by a fold in a double fabric forming the filter bag by stitching.

REFERENCES:
patent: 2930446 (1960-03-01), Momberg et al.
patent: 3937621 (1976-02-01), Gravley
patent: 4015961 (1977-04-01), Howard et al.
patent: 1603110 (1981-11-01), None
patent: 9525580 (1995-09-01), None
patent: 9836819 (1998-08-01), None

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