Color coded disposable filter holder

Details Color coded disposable filter holder Color coded disposable filter holder

1989-11-30

1991-01-22

Fisher, Richard V.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Transparent

210445, 210447, 55503, 55510, B01D 29085

Patent

active

049869043

ABSTRACT:
A disposable-filter holder comprises a shallow, box-shaped plastic housing of two pieces with intake and discharge stubs, a membrane-type filter being sandwiched between the two housing pieces which are joined together in a gas-tight and pressure-resistant manner. To reliably code the disposable-filter holder according to the filter characteristics, the disposable-filter holder comprises a colored coding plastic enveloping it in the outer radial zone. This color coding extends in at least one clearance in the first and/or in the second housing piece in geometrically locking manner and thereby does not project beyond the outer housing contour. The color coding only characterizes the disposable-filter holder and does not serve any sealing or locking function.

REFERENCES:
patent: 4404006 (1983-09-01), Williams et al.
patent: 4444661 (1984-04-01), Jackson et al.
patent: 4601820 (1986-07-01), Leason
patent: 4664800 (1987-05-01), Rainis et al.
patent: 4874513 (1989-10-01), Chakrabarty et al.

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