Back to results
US 9,346,002 B2Granted
Crankcase ventilation filter assembly, components, and methods
AssigneeDonaldson Company, Inc.
InventorChristof Kleynen
Life of this patent
Estimating the term…
Abstract
Crankcase ventilation filter assemblies, components thereof, features thereof, and methods of assembly and use are described. An example assembly is characterized in which the assembly includes a housing having an access cover and a base, and a filter cartridge is configured to sealingly engage both the access cover and the base, in preferred manners.
Claims26
A crankcase ventilation filter assembly comprising:
- (a) a housing defining a housing interior and a housing central axis, and having:
- a gas flow inlet;
- a gas flow outlet;
- and, a liquid drain outlet;
- (i) the housing comprising a housing base and an access cover;
- the access cover being removeably secured to the housing base with a rotational engagement arrangement in which, during engagement and separation, the access cover is rotated, relative to the base, over at least a minimal radial arc around the housing central axis;
- the housing being completely separable from the access cover upon a total rotation within the range of 5°-25° , inclusive;
- and,
- (ii) the access cover including an interior seal collar defining a radially inwardly directed cartridge seal surface;
- the interior seal collar and radially inwardly directed cartridge seal surface being secured within the access cover in a manner such that the seal collar and cartridge seal surface rotate, relative to the housing base, over at least the minimal radial arc around a housing central axis when the access cover is rotated, relative to the housing base, during engagement and separation between the access cover and housing base;
- and,
- (b) a crankcase ventilation filter cartridge removeably positioned within the housing interior;
- the crankcase ventilation filter cartridge comprising:
- (i) first and second, opposite, end pieces;
- (ii) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (A) the media defining an media inner perimeter and a media outer perimeter;
- (iii) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (iv) a first seal member positioned on, and around, the first seal support projection;
- (A) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (B) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (C) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (v) a first member of an anti-rotation projection/receiver arrangement engaging a portion of a filter housing and preventing relative rotation between the filter cartridge and the engaged portion of the filter housing.
21 more elements
A crankcase ventilation filter assembly comprising:
- (a) a housing defining a housing:
- interior and having:
- a gas flow inlet;
- a gas flow outlet;
- and, a bottom liquid drain outlet;
- the housing comprising:
- (i) an access cover assembly having:
- a seal collar defining a radially inwardly directed cartridge seal surface;
- and,
- (ii) a base comprising a sidewall;
- and, a bottom;
- and,
- (b) an internally received, removable, crankcase ventilation filter cartridge comprising:
- (i) first and second, opposite, end pieces;
- (ii) a media pack including media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- and, the media defining an inner media perimeter and an outer media perimeter;
- (iii) the first end piece comprising, in use, an upper end piece having a first seal support projection thereon:
- projecting away from the media pack and located on an opposite side of the first end piece from the media pack;
- and, supporting an outwardly directed first seal member at a location in projection overlap with the media pack at a location spaced radially outwardly from the media inner perimeter and spaced radially inwardly from the media outer perimeter;
- (iv) the first seal member on the first seal support projection releasably sealed to the seal collar in the access cover;
- and,
- (v) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (vi) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (vii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (vii) the second end piece having an outer perimeter;
- (A) the second end piece including a central projection thereon extending downwardly, in use, from the second end piece in a direction away from the media;
- the central projection defining an internal liquid flow passageway in flow communication with the open filter interior;
- the internal liquid passageway defining an internal conduit of cross-sectional size that does not extend into overlap to the media at a conduit perimeter location greater than halfway across the media from the inner media perimeter to the outer media perimeter;
- and,
- (c) a first member of an anti-rotation projection/receiver arrangement engaging a portion of the filter housing preventing relative rotation between the filter cartridge and the engaged portion of the filter housing.
29 more elements
A crankcase ventilation filter cartridge configured for removable installation in a housing of a crankcase ventilation filter assembly;
- the filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- (i) the first member of an anti-rotation arrangement being positioned on the second end cap and comprising a central projection defining an internal liquid flow on the second end cap at a location projecting away from the first end cap;
- the central projection having a receiver gap therein.
11 more elements
A crankcase ventilation filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- and,
- (f) a second seal member positioned on, and around, an outer perimeter of the second end piece.
10 more elements
A crankcase ventilation filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- and,
- (f) a second seal member on the second end piece including a lower skirt lip directed both:
- downwardly away from the media pack;
- and, radially outwardly from the cartridge central axis.
12 more elements
A crankcase ventilation filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- and,
- (f) a second seal member on the second end piece including at least two radially outwardly directed, spaced, radial seal lips.
10 more elements
A crankcase ventilation filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- (f) the first seal member defines a free lip of:
- at least 1 mm outer extension;
- a thickness within the range of 1 to 2 mm, inclusive;
- and, greater outer extension than thickness.
12 more elements
A crankcase ventilation filter cartridge comprising:
- (a) first and second, opposite, end pieces;
- (b) a media pack comprising media positioned between the first and second end pieces;
- the media surrounding and defining an open filter interior and a cartridge central axis;
- (i) the media defining an media inner perimeter and a media outer perimeter;
- (c) a first seal support projection positioned on the first end piece and located on an opposite side of the first end piece from the media pack;
- (d) a first seal member positioned on, and around, the first seal support projection;
- (i) the first seal member defining a circular perimeter, in projection into a plane orthogonal to the cartridge central axis;
- (ii) the first seal member defining a seal plane non-orthogonal to the cartridge central axis;
- and,
- (iii) the first seal member defining a seal perimeter having a size, in projection into a plane orthogonal to the cartridge central axis, that is smaller than the media outer perimeter;
- (e) a first member of an anti-rotation projection/receiver arrangement positioned to engage a portion of a filter housing, in use, to prevent relative rotation between the filter cartridge and the engaged portion of the filter housing;
- and,
- (f) a central projection on the second end piece;
- the central projection surrounding and defining a liquid flow conduit and projecting in a direction away from the media.
11 more elements
Dependencies are inferred from the claim text.