Filter construction

Claim 1

A filter connectable between two fluid pipes, one upstream and the other downstream of the filter, comprising: an inner rigid tube of great mechanical strength including first connecting means at one end for connecting same to the upstream fluid pipe, and second connecting means at its opposite end for connecting same to the downstream fluid pipe; said rigid tube being formed with first and second axially-spaced holes through its wall; an outer housing enclosing said inner rigid tube and radially spaced from said first and second holes thereof; first wall means sealing one end of the outer housing to said one end of the inner rigid tube; second wall means sealing the opposite end of the outer housing to said opposite end of the inner rigid tube; a deflector within said inner rigid tube between its first and second axially spaced holes for deflecting the fluid from the upstream pipe to flow through a path including said first hole in the inner rigid tube, the space between the inner rigid tube and the outer housing, and the second hole in the inner rigid tube to the downstream pipe; and a filter body disposed in said path between said first and second holes in the inner rigid tube to filter the fluid flowing through said path; said outer housing including a horizontal section enclosing and coaxial with the inner rigid tube, a partition between the inner surface of the latter housing section and the inner rigid tube between said first and second holes thereof, and a vertical section below and at right angles to the horizontal section and the inner rigid tube; said filter body being of cylindrical shape and disposed within said vertical housing section with its interior communicating with the first hole on one side of said deflector and its exterior communicating with the second hole on the other side of the deflector to filter the fluid flowing through said path between said first and second holes.