Patent ID: 11951429
Assignee: DONALDSON COMPANY, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 24:
25. An air filter cartridge comprising:
(a) a filter media pack comprising filter media and having a first flow face and a second, opposite, flow face, and a central flow axis through the first flow face and the second flow face;
(i) the filter media pack having a rectangular cross-sectional shape in a direction perpendicular to the central flow axis; and
(ii) the filter media pack comprising four sides, including a first pair of first and second opposite sides and a second pair of first and second opposite sides, extending between the first flow face and the second flow face;

(b) first and second side pieces positioned, respectively, on the first pair of first and second opposite sides of the filter media pack, wherein the first and second side pieces each comprise opposite end edges, wherein:
(i) at least one of the opposite end edges of each of the first and second side pieces are located beyond one of the first flow face or the second flow face of the filter media pack and facing in a direction away from the filter media pack; and
(ii) the at least one of the opposite end edges of each of the first and second side pieces are constructed to engage an air cleaner housing, in use, to support the filter cartridge when the filter cartridge is installed in the air cleaner housing;
(iii) the first and second side pieces being configured to seal the first pair of first and second opposite sides of the filter media pack against air flow through the first pair of first and second opposite sides of the filter media pack; and

(c) a housing seal arrangement for sealing the air filter cartridge to an air cleaner housing, in use, wherein:
(i) the housing seal arrangement comprises a seal member that includes a seal surface that forms an axially directed seal, in use;
(ii) the seal surface extends around a perimeter of the filter media pack between the first flow face and the second flow face; and
(iii) the at least one of the opposite end edges of each of the first and second side pieces surfaces are non-parallel to the seal surface of the seal member.