Series filters

Details Series filters Series filters

1988-04-13

1989-05-23

Spear, Frank

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

210443, 210168, 210254, 210434, 123196R, 184 624, B03B 2924, B03B 2710

Patent

active

048328367

ABSTRACT:
A filter unit including a housing element having a first and a second inlet for fluid and a first and a second outlet for fluid, flow passages defined in the housing defining a first path of flow for fluid between the first inlet and the first outlet of the housing, a flow passage defined in said housing defining a second path of flow for fluid between the second inlet and the second outlet of the housing, and a filter member in housing being capable of filtration to remove particles of dimensions greater than 5 micrometers, the second path of flow including a path through the filter and a by-pass about the filter having a resistance to flow of fluid no greater than that of the filter whereby in normal use a proportion only of fluid passing through the second flow path passes through the filter, provides fine filtration for an internal combustion engine and is attachable to a conventional engine filter mount.

REFERENCES:
patent: 2568196 (1951-09-01), Kennedy
patent: 2843268 (1958-07-01), Kennedy
patent: 4032447 (1977-06-01), Douglass
patent: 4048071 (1977-09-01), Yamada et al.
patent: 4534861 (1985-08-01), Wedemeyer et al.
patent: 4608173 (1986-08-01), Watanabe et al.

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