Patent ID: 7192520

Claim:
A magnetic device adapted for attachment to an exterior wall of a cylindrical filter canister, said magnetic device having a resting curvature, said device comprising: a non-ferrous frame having an internal cavity; a single ferrous baseplate mounted within said cavity, said ferrous baseplate having an exterior surface and an interior surface, said exterior surface to be located further from the canister when installed thereon, said baseplate having a peripheral edge, said peripheral edge being embedded within said frame; a pair of ferrous blocks being mounted on said interior surface, said ferrous blocks being spaced apart forming a bridge between said blocks, said bridge functioning as a fulcrum permitting flexing of said frame to assume different curvatures of said frame from said resting curvature thereby permitting said magnetic device to adjust to different diameters of filter canisters in order to be mounted flush against each of these canisters; a plurality of magnets mounted within said cavity with said magnets being mounted directly adjacent said blocks, said magnets substantially covering said blocks dividing said magnets into a pair of spaced apart zones separated by said bridge, said magnets having an exposed surface adapted to be placed flush against the filter canister, whereby said magnets generate a magnetic force which not only secures said magnetic device to a filter canister but generates a magnetic field within the canister which attracts and holds ferrous particulate matter which is flowing through the liquid flow path which includes the filter canister against an interior sidewall of the canister preventing such from exiting the canister.