Filter arrangement; sealing system; and methods
AssigneeDonaldson Company, Inc.
InventorsSteven Scott Gieseke, Carolyn J. Finnerty
Life of this patent
Estimating the term…
Abstract
A filter pack includes a filter construction and a sealing system for sealing the construction within a duct or housing. The filter construction has first and second opposite flow faces and is configured for a straight-through flow. The sealing system includes a frame construction and a compressible seal member. The compressible seal member is molded around a portion of the frame construction. The compressible seal member is sufficiently compressible to form a radial seal between and against the frame construction and a surface of a housing when the filter pack is inserted within the housing.
Claims20
An engine air flow system comprising:
- (a) an engine having a rated air flow of at least 500 cfm and an air intake duct;
- and
- (b) a filter element construction including a media pack and a sealing system;
- (i) said media pack having first and second opposite flow faces;
- said media pack being constructed and arranged for air to flow into said media pack through said first flow face, and for air to exit said media pack through said second flow face;
- (A) said media pack having a longitudinal axis passing through said first flow face and said second flow face;
- (ii) said sealing system comprising a frame arrangement and a seal member;
- (A) said frame arrangement including an extension projecting axially from one of said first and second flow faces and in a same direction as said longitudinal axis;
- (B) said seal member being supported by said extension of said frame arrangement;
- and
- (C) said seal member forming a radial seal between and against said extension and said air intake duct.
A filter element arrangement comprising:
- (a) a media pack having first and second opposite flow faces;
- (i) said media pack having a longitudinal axis passing through said first flow face and said second flow face;
- (b) a sealing system including a frame construction and a seal member;
- (i) said frame construction including an extension projecting axially from one of said first and second flow faces and in a same direction as said longitudinal axis;
- (ii) said extension having an annular portion;
- and
- (iii) said seal member being supported by said annular portion of said extension of said frame construction.
A method of servicing a filter element comprising:
- (a) inserting a filter element having a first and second opposite flow face and a sealing system into a duct;
- the filter element having a longitudinal axis passing through the first flow face and the second flow face;
- (i) the sealing system including a frame construction and a seal member;
- the frame construction including an extension projecting axially from one of the first and second flow faces and in a same direction as the longitudinal axis;
- the seal member being supported by the extension of the frame construction;
- and
- (b) compressing the seal member between and against the extension of the frame construction and the duct to form a radial seal.
Dependencies are inferred from the claim text.