Sliding action seam seal and retainer assembly for a fluid filter

Abstract

A fluid filter for spin-on mounting to a base includes an outer shell defining a hollow interior and a nutplate secured to the outer shell by forming an upper edge portion of the outer shell onto the nutplate. A filtering element is positioned within the hollow interior and the base provides fluid-in and fluid-out passageways for the fluid filter. To provide a face seal against the base and concurrently a radial seal against the formed edge, a retainer and gasket assembly is used. The retainer has a base portion which rests on the nutplate and an inclined portion which extends upwardly and inwardly. An elastomeric gasket with a unique cross sectional shape has a flat portion which rests on the inclined portion. With axial compression of the gasket by the base, the gasket compresses against the retainer and expands radially into sealing contact with the formed edge.

Dependencies are inferred from the claim text.