Abstract: An automotive lubricating oil filter device comprising a main container body having inlets and outlets for the lubricating oil to be filtered, and a cylindrical filtering element through which the oil is filtered from the outer portion of the body inwardly to a central cylindrical core. The core contains a magnetized metallic helical structure within which is enclosed one or more longitudinal bars of magnesium metal.The magnetized helical spring serves to remove fine metallic particles from the lubricating oil, preventing agglomeration on the filtering element, in addition to preventing engine wear, and the magnesium metal serves to neutralize sulfuric acid generated in the engine. The structure with the helical spring and bars contained therein may be removed and cleaned to be regenerated without requiring disposal of the main filter structure and vice versa.

Abstract: A damper for sealing and unsealing a vertical furnace flue pipe to minimize the escape of heat when the furnace is not operating, the damper comprising a cylindrical body adapted to form a section of vertical flue pipe, the cylindrical body having a top opening and a bottom opening at least one transverse rod horizontally transversing the body and carried by opposed apertures in opposing wall portion of the body, a pair of oppositely extending gull-wing shaped damper shutters pivotally mounted on the rod and in the closed condition extending upwardly and outwardly to the inner surfaces of the cylindrical walls of the damper section, the lower edges of the wing sections engaging an annular rim mounted on the inner walls, the wings opening to a vertical position when the furnace is operating and closing by gravity when the furnace is not operating.