Seal for fluid filter

Claim 1

A fluid filter, comprising: a. a filter housing of relatively light material susceptible to flexing under pressure having a cylindrical main wall portion, and an inwardly sloping end wall portion terminating in a circular edge defining a circular open end smaller in diameter than the diameter of the main wall portion, and Bottom wall means at the opposite end to thereby define a filter chamber; b. a non-flexible cover member mounted on the open end, having a annular bottom web portion engaging said circular edge, said cover member having a depending peripheral flange portion that extends over the sloping end wall portion and over part of the main wall portion to define an annular sealing chamber between the cover member and the sloping end wall portion, said sealing chamber being generally triangular in cross-section; c. a tubular filter element mounted in said filter chamber; d. a first fluid passageway in said cover member leading to the interior of the filter element and a second fluid passageway in said cover member leading to the filter chamber exterior of the filter element; e. a flexible, O-ring type seal in said sealing chamber having portions thereof in contact with said cover member and said sloping end wall portion to provide therewith a fluid tight seal between the housing and cover member; f. an annular groove formed in said web portion, having an outer peripheral wall formed by the peripheral flange portion, and an inner peripheral wall concentric therewith, said end wall portion having said circular edge positioned in said groove adjacent said inner peripheral wall; and g. elongated clamping means connected to the cover member and to the bottom wall means at the opposite end of the housing to hold the cover member on the housing.