Composite planar and triangularly pleated filter element

Details Composite planar and triangularly pleated filter element Composite planar and triangularly pleated filter element

1989-03-30

1990-05-15

Jones, W. Gary

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104935, 55497, 55499, 55500, 55511, 55514, 55521, 55DIG12, B01D 4602

Patent

active

049255614

ABSTRACT:
A filter element comprises at least two pleated filtering mediums and at least one roughly flat filtering medium interposed between the pleated filtering mediums. Each pleated filtering medium has an end constituted by edges of triangular bottom sections and the other end constituted by edges of triangular top sections. The triangular bottom sections of one pleated filtering medium is bonded to the flat filtering medium only at and near the edges of the bottom sections. The triangular top sections of the other pleated filtering medium is bonded to the roughly flat filtering medium only at and near the edges of the top sections. Spacers are provided between the top sections and the flat filtering medium and between the bottom sections and the roughly flat filtering medium. Such spacers may be constituted by alternate small ridges and grooves formed in the roughly flat filtering medium.

REFERENCES:
patent: 3025964 (1962-03-01), Summers et al.
patent: 3112264 (1963-11-01), Bub
patent: 4056375 (1977-11-01), Ringel et al.
patent: 4080185 (1978-03-01), Richter et al.
patent: 4356011 (1982-10-01), Day et al.
patent: 4452619 (1984-06-01), Wright et al.
patent: 4584005 (1986-04-01), Allan et al.
patent: 4589983 (1986-05-01), Wydevan

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