Strainer improvement

Details Strainer improvement Strainer improvement

1976-12-06

1977-12-20

Spear, Jr., Frank A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55521, B01D 3908

Patent

active

040640531

ABSTRACT:
A strainer blank comprises a flat sheet having a plurality of cutouts including a cutout adapted to define a strainer portion at the apex of a cone formed from the blank. Strainer material positioned over the cutouts defines a convex rear end at the apex which is folded during formation of the conical strainer to form a multi-ply elongated seam which adds strength and provides a surface area for adhesively uniting the strainer material.

REFERENCES:
patent: 752019 (1904-02-01), Adwen
patent: 2187769 (1940-01-01), Carew
patent: 3567033 (1971-03-01), Whelan
patent: 3738889 (1973-06-01), Whelan
patent: 3741397 (1973-06-01), Gerson et al.

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