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Solid particulate filters

  • US 4,428,758 A
  • Filed: 02/22/1982
  • Issued: 01/31/1984
  • Est. Priority Date: 02/22/1982
  • Status: Expired due to Fees
First Claim
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1. A honeycomb filter body for removing solid particulates from fluids passed through the body comprising:

  • a matrix of thin, interconnected walls defining an inlet end face and an outlet end face on opposing outer surfaces of the body and a multiplicity of cells extending through the body between the inlet and outlet end faces in a substantially longitudinal and mutual parallel fashion, the thin walls having interconnected open porosity of a volume and size sufficient to enable the fluid to flow at least across the narrow dimensions of the thin walls and to prevent at least a significant portion of the solid particulates in the fluid from passing either completely across or through the thin walls;

    a first set of cells, each being open at one end face and closed at the remaining end face;

    a second set of cells, each being open at said remaining end face and closed at said one end face;

    each of the first and second sets of cells being further divided into a plurality of subsets of mutually adjoining cells of each respective set of the cells; and

    at least one subset of mutually adjoining buffer cells, each buffer cell being closed at the two end faces , the at least one subset of buffer cells being positioned between and adjoining a subset of the first set of cells and a subset of the second set of cells.

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