Patent ID: 7138052

Claim:
A filter system comprising a bracket module and a filter, the filter comprising: a filter body with a cylindrical side surface, top end, a bottom end, and a central longitudinal filter axis between said top end and said bottom end; two ports, comprising an inlet port and an outlet port, at said top end lying on a plane perpendicular to said filter axis, wherein one of said ports is located generally at the central longitudinal filter axis and the other of said ports is offset from said filter axis and is between said filter axis and the cylindrical side surface of the filter; and wherein said bottom end of the filter does not comprise any fluid port, and said bottom end comprises an indentation that is not a fluid port; and wherein the bracket module comprises: a top bracket holding said inlet and outlet ports, wherein said top bracket comprises a mounting plate for attachment to a generally vertical surface, a horizontal conduit connected to the plate having inlet and outlet ends for conveying fluid into and out of the filter system, and an axis between said inlet and outlet ends, and first and second tubular connectors extending out from the conduit in a horizontal plane, said first tubular connector being shorter than the second tubular connector and slidably engaging the one of said ports that is located generally at the central longitudinal filter axis, and said second tubular connector slidably engaging the other of said ports that is offset from the filter axis between said filter axis and the cylindrical side surface of the filter; and a bottom bracket holding the filter bottom end, said bottom bracket comprising a generally cylindrical ring and a post upending from a center of the ring, said post being slidably received in said indentation of the filter bottom end to hold said filter bottom end, and said post not being a fluid conduit.