US Patent 7704384 Self dislodging filter element

A self dislodging filter element, primarily for automotive applications, has a filter screen attached to an annular magnet. The filter element is installed in a port or conduit through which fluid flows and is held in place with magnetic attraction. If the filter screen becomes too clogged, pressure from the fluid impinging on the clogged screen overcomes the magnetic attraction and the filter slides down the conduit to be deposited in a repository and out of the fluid flow path.