Variant length pleated filter element

Details Variant length pleated filter element Variant length pleated filter element

1985-11-12

1987-06-16

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104935, 21049701, 55488, 55489, 55498, 55510, 55521, B01D 2706

Patent

active

046735038

ABSTRACT:
A filter element adapted to be incorporated in filter devices such as air filter, oil filter and fuel filter is disclosed which includes a pair of end plates and a filter material folded so as to form a series of pleats and disposed between the end plates to define a hollow cylinder having outer and inner circumferences. The space between the circumferences is divided into at least six areas to contain the pleats with symmetrical pattern. Each of the areas includes a group of the inner ridges, through which the pleats are connected to each other, arranged substantially along the pleat in the adjacent area to thereby vary the length of the pleats connected through the inner ridges of the group.

REFERENCES:
patent: 3231094 (1966-01-01), Wiegand
patent: 3371790 (1968-03-01), Kudlaty et al.
patent: 4154688 (1979-05-01), Pall
patent: 4522719 (1985-06-01), Kuwajima et al.

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