초록 ▼

A furnace air filter includes a structure which has two identical rectangularly shaped grid members. The grid members are joined together at one side by a hinge, which hinge is made of the same plastic material as the grid members. The grid members and hinge are integrally formed preferably by an in

A furnace air filter includes a structure which has two identical rectangularly shaped grid members. The grid members are joined together at one side by a hinge, which hinge is made of the same plastic material as the grid members. The grid members and hinge are integrally formed preferably by an injection molding process. A filter media is placed between the grid members so as to form a filter unit adapted to be positioned in the filter track of a furnace air duct. The plastic grid structure is reusable, requiring the replacement of only the filter media.

대표청구항 ▼

[ I claim:] [1.] In combination, a furnace having a filter track and an air filter assembly removably disposed along the filter track of the furnace, said filter assembly comprising:a filter frame having two identical rectangularly-shaped grid members;each of said grid members includes a plurality o

[ I claim:] [1.] In combination, a furnace having a filter track and an air filter assembly removably disposed along the filter track of the furnace, said filter assembly comprising:a filter frame having two identical rectangularly-shaped grid members;each of said grid members includes a plurality of uniformly shaped grid openings distributed uniformly therethrough;means for joining said grid members along one side thereof, so that said grid members are foldable toward each other;an air filter media positioned between the folded grid members whereby to form said air filter assembly;wherein said grid members are retained in the folded disposition by the filter track of the furnace.