Patent ID: 7703508

Claim:
A well filter for submersible motor-driven pumps, comprising: an elongated filter housing in which a cylindrical filtering element is installed; a fixture for fastening the elongated filter housing to a pump; at least one fluid intake port positioned to allow fluid to enter the elongated filter housing; and a shape-deformable sealing element installed on an outer surface of the elongated filter housing, wherein the shape-deformable sealing element is deigned as a multi-layered sealing tool comprising a cup and an element located on the cup outer surface and which is made of an environment-caused shrinkable material, and the shape-deformable sealing element being transitionable from directing fluid up through an interior of the cylindrical filtering element to enabling fluid flow along an exterior of the elongated filter housing after at least partially filling an interior of the cylindrical filtering element with filtered material.