Fluid filtering device

Details Fluid filtering device Fluid filtering device

1986-09-11

1988-01-26

Sever, Frank

Liquid purification or separation

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

210450, 210451, 210477, 210DIG14, B01D 3514

Patent

active

047215631

ABSTRACT:
A fluid filtering device employs a removably insertable filter element which must be positioned within the device in order to avoid an indicator signal thereby alerting the user to inadvertant use of the filtering device without the filter element. The device generally includes a filter housing and rotatably securable filter head having inlet, outlet and bypass fluid passageways. The filtering structure includes a tubular filter element attached to a concave plate having the seal secured to the outer rim thereof. The concave plate includes a central opening which allows fluid communication between one fluid passageway and the inner chamber of the filter element and a plurality of peripherally disposed openings which permit fluid communication between the other fluid passageway and the outer housing chamber. Bypass means, responsive to an increased pressure differential across the filter element such as occurs with clogging, are provided for direct fluid communication between the inlet and outlet passageways or direct fluid communication between the inlet and bypass passageways.

REFERENCES:
patent: 3794168 (1974-02-01), Perkins
patent: 4053410 (1977-10-01), Lorimor
patent: 4179372 (1979-12-01), Rosaen
patent: 4495068 (1985-01-01), Rosaen

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