Filter assembly made of thermoplastic materials

Details Filter assembly made of thermoplastic materials Filter assembly made of thermoplastic materials

1975-03-19

1977-08-30

Lutter, Frank W.

Liquid purification or separation

With repair or assembling means

55483, 55492, 55495, 55507, 55DIG31, 210445, 210486, B01D 3914, C02C 122

Patent

active

040453502

ABSTRACT:
A filter assembly includes a monolithic thermoplastic structural element having parallel sealing surfaces, the element being either a filter frame or a filter support. The material of the element is denser at its surface than in its inner portions. When the element is a filter support, it has a system of filter grooves extending in its surfaces, which may be connected to a discharge outlet by way of a further groove which has a dimension increasing toward the discharge. When the element is a filter frame, it may be provided with a support body in the sludge space, having bases parallel with the sealing surfaces of the element. One or more inlet ports to the sludge space of the frame are provided, which flare outwardly toward the sludge space. The element may be provided with oval or circular recesses extending from edges between the parallel sealing surfaces, and the element may be provided with a projection on its edge, to which a holder may be affixed. If the element is a filter support, two edge corners may be bevelled and provided with projections to enable a filter sheet to be held thereto by way of clips on the projections.

REFERENCES:
patent: 2594518 (1952-04-01), Teale
patent: 3221883 (1965-12-01), Lennstrom
patent: 3241678 (1966-03-01), Wrotnowski
patent: 3497065 (1970-02-01), Johnson
Modern Plastics Encyclopedia, 1968, vol. 45, No. 1A, pp. 344-366.
Encyclopedia of Polymer Science and Technology, vol. 3, Interscience Publishers, 1968, pp. 80-109.

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