Filter cartridges; air cleaners; and methods
First Claim
Patent Images
1. An air filter cartridge comprising:
- (a) first and second, opposite, ends;
(i) the first end having an air flow exit aperture therethrough;
(b) a conical extension of filter media extending between the first and second ends;
(c) a first, open, end cap adjacent the first end of the filter cartridge;
(i) the media being embedded in the first, open, end cap;
(ii) the first, open, end cap having a seal portion;
(d) a preform embedded in the first end cap;
(i) the perform having an imperforate axial shield portion extending axially along the media toward the media second end a distance of at least 5% of an axial length of the filter cartridge; and
, (ii) the perform having a radial ring portion forming a dust shield extending radially outwardly from the axial shield portion and positioned adjacent the first end of the filter cartridge with the seal portion positioned on an opposite side of the radial ring portion from the second end of the air filter cartridge; and
, (e) a second, closed, end cap adjacent the second end of the filter cartridge;
(i) the second, closed, end cap including a central projection extending inwardly of the filter cartridge.
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Accused Products
Abstract
The disclosure concern air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary filter cartridge is shown. Preferred methods of assembly and use are provided.
190 Citations
21 Claims
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1. An air filter cartridge comprising:
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(a) first and second, opposite, ends;
(i) the first end having an air flow exit aperture therethrough;
(b) a conical extension of filter media extending between the first and second ends;
(c) a first, open, end cap adjacent the first end of the filter cartridge;
(i) the media being embedded in the first, open, end cap;
(ii) the first, open, end cap having a seal portion;
(d) a preform embedded in the first end cap;
(i) the perform having an imperforate axial shield portion extending axially along the media toward the media second end a distance of at least 5% of an axial length of the filter cartridge; and
,(ii) the perform having a radial ring portion forming a dust shield extending radially outwardly from the axial shield portion and positioned adjacent the first end of the filter cartridge with the seal portion positioned on an opposite side of the radial ring portion from the second end of the air filter cartridge; and
,(e) a second, closed, end cap adjacent the second end of the filter cartridge;
(i) the second, closed, end cap including a central projection extending inwardly of the filter cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An air cleaner assembly comprising:
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(a) a housing body having;
a first end with an axial air flow outlet therein; and
, a second, open end;
the housing body including;
(i) an inner, annular, primary filter cartridge sealing surface;
(ii) a dust drop tube adjacent the first end; and
,(iii) a tangential air flow inlet adjacent the second end;
(b) a service cover secured to the housing open end;
the service cover including;
(i) a precleaner arrangement comprising a shield and a cyclonic ramp arrangement; and
,(ii) a central projection;
(c) a primary filter cartridge operably positioned within the housing;
the primary filter cartridge having;
(i) a conical shape with a first, open, end having a first outside dimension and a second, closed, end having a second outside dimension;
the first outside dimension being larger than the second outside dimension;
(ii) a first open end cap at the first end with a perimeter having an outside radial seal surface sealed to the inner, annular, primary filter cartridge sealing surface of the housing body;
(iii) a second, closed, end cap at the second end having an inner projection recess into which the cover central projection extends; and
(iv) the primary filter cartridge being positioned with the end having the closed end cap surround by the shield of the precleaner. - View Dependent Claims (18, 19, 20)
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21. A method of installing a filter cartridge in an air cleaner assembly, the method including steps of:
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(a) inserting a primary filter cartridge into an air clear housing body;
(i) the housing body having a first end with an axial air flow outlet therein and a second, open, end;
(A) the housing body including;
(1) an inner primary filter cartridge sealing surface;
(2) a dust drop tube adjacent the first end; and
(3) a tangential air flow inlet adjacent the second end;
(ii) the primary filter cartridge having;
(A) a conical shape with a first, open, end having a first outside dimension and a second, closed, end having a second outside dimension;
the first outside dimension being larger than the second outside dimension;
(B) a first open end cap at the first end having a seal portion, and, (C) a second, closed, end cap at the second end having an inner projection recess;
(iii) the step of inserting including positioning the primary filter cartridge with the first end cap adjacent the housing body first end and sealed to the housing body; and
,(b) positioning a service cover on the second end of the housing body to close the housing body;
(i) the service cover including;
(A) a precleaner arrangement comprising a shield and a cyclonic ramp arrangement; and
(B) a central projection;
(ii) the step of positioning the service cover including positioning the service cover with;
(A) the service cover central projection extending into the inner projection of the closed end cap of the primary filter cartridge; and
,(B) the shield of the service cover surrounding the second, closed, end cap of the primary filter cartridge.
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Specification