Filter head

Details Filter head Filter head

2007-06-21

2011-10-04

Drodge, Joseph (Department: 1778)

Liquid purification or separation

Plural distinct separators

Filters

C055S318000, C210S341000, C210S424000, C210S444000, C137S625180, C137S625460

Reexamination Certificate

active

08029672

ABSTRACT:
A filter head, designed to hold at least two filter elements. The filter head having a housing, into which feed channels to, and return channels from, the filter elements are integrated. A rotatable switching drum is provided for selectively opening or closing the channels to control the flow of fluid to the filter elements. The filter head has a cover, which closes off the housing, and a spring element, which produces an axial force which presses one of the sealing surfaces of the switching drum against the cover and the other sealing surface of the switching drum against the housing.

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patent: 80 14 798 (1980-09-01), None
patent: 1 307 163 (1973-02-01), None

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