Patent ID: 6866693

Claim:
A washable air filter for an internal combustion engine of a vehicle for recyclable use, comprising: an outer cylindrical member formed of a metal material and having a number of openings; an inner cylindrical member formed of a metal material and having a number of openings, the inner cylindrical member being arranged inside the outer cylindrical member so as to be spaced apart from the outer cylindrical member; and a first filter element provided between the outer cylindrical member and the inner cylindrical member, the first filter element consisting of a cylindrically-configured stainless mesh sheet which is folded in a pleated-form having peaks and valleys arranged alternately and along an axial direction thereof, the stainless mesh sheet being formed from a stainless mesh having an average opening size of 10 to 100 μm, and the mesh being comprised of woven warp and weft wires having a diameter of 20 to 200 μm, wherein the combination of the outer cylindrical member formed of a metal material, the inner cylindrical member formed of a metal material and the first filter element consisting of a cylindrically-configured stainless mesh sheet allows washing of the air filter for the recyclable use.