US6585793B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus and methods
Assignee: Andreae Filters Inc
•
Filing: 2000-12-29
•
Granted: 2003-07-01
•
Expires: 2020-12-29
Abstract
Abstract The invention provides a filter apparatus for removing air entrained particles comprising a pleated filter media. A first media member has a plurality of alternating upstream and downstream folds and a wall connecting the folds. A pair of slits forms an aperture and a hinged pleat. A second media member matingly attaches to the first media member.
Inventors
- 👤 C. Shaun Richerson
- 👤 Robert Andreae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:50
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/523; B01D45/00; B01D45/04; B01D45/08; B01D46/10; B01D50/00; B01D50/20; B01D2275/00; B01D2275/10; Y; Y10; Y10S; Y10S264/00; Y10S264/48; Y10S55/00; Y10S55/05
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
78 words
A filter apparatus for removing air entrained particulates comprising: a first media member comprising: a pair of upstream folds; a downstream fold interposed between the pair of upstream folds; a wall connecting each of the pair of upstream folds to the downstream fold; an aperture positioned on the wall between the pair of upstream folds; and a pleat hinged to an edge of the aperture, wherein the pleat and a border around the aperture form a diamond shape.
Claim 2
Dependent Claim
78 words
A filter apparatus for removing air entrained particulates comprising: a first media member comprising: a pair of upstream folds; a downstream fold interposed between the pair of upstream folds; a wall connecting each of the pair of upstream folds to the downstream fold; an aperture positioned on the wall between the pair of upstream folds; and a pleat hinged to an edge of the aperture, wherein the pleat and a border around the aperture form a diamond shape.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein the pleat extends above the aperture.
Claim 4
Dependent Claim
12 words
The apparatus of claim 1 wherein the aperture straddles the downstream fold.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein the pleat hinges on two sides of the aperture.
Claim 6
Dependent Claim
28 words
The apparatus of claim 4 wherein a center of the pleat has a different length than an area where the pleat hinges to the sides of the aperture.
Claim 7
Dependent Claim
16 words
The apparatus of claim 1 wherein the pleat is shaped substantially the same as the aperture.
Claim 8
Dependent Claim
12 words
The apparatus of claim 1 wherein the aperture is rectangular in shape.
Claim 9
Dependent Claim
22 words
The apparatus of claim 1 wherein the aperture is formed by a pair of slits perpendicular to and across the downstream fold.
Claim 10
Dependent Claim
27 words
The apparatus of claim 8 wherein the downstream fold across the pleat is reversed such that the pleat projects in the same direction as the upstream folds.
Claim 11
Dependent Claim
12 words
The apparatus of claim 1 wherein the first media member is voidless.
Claim 12
Dependent Claim
15 words
The apparatus of claim 1 wherein the first media member is formed of corrugated linerboard.
Claim 13
Dependent Claim
19 words
The apparatus of claim 1 wherein the downstream fold is positioned generally parallel to the pair of upstream folds.
Claim 14
Dependent Claim
12 words
The apparatus of claim 1 wherein the first media member is collapsible.
Claim 15
Dependent Claim
11 words
The apparatus of claim 1 further comprising a second media member.
Claim 16
Dependent Claim
14 words
The apparatus of claim 14 wherein the second media member comprises a filtering mesh.
Claim 17
Dependent Claim
71 words
The apparatus of claim 14 wherein said second media member comprises: a pair of upstream creases; a downstream crease positioned generally parallel to and interposed between the pair of upstream creases; a secondary wall connecting each of the pair of upstream creases to the downstream crease; a secondary aperture positioned on the secondary wall between the pair of upstream creases; and a secondary pleat hinged to an edge of the aperture.
Claim 18
Dependent Claim
47 words
The apparatus of claim 16 wherein the first media member is attached to the second media member in a complementary relationship such that the pair of upstream folds aligns with and attaches to the pair of upstream creases and the downstream fold aligns with the downstream crease.
Claim 19
Dependent Claim
14 words
The apparatus of claim 17 wherein the aperture and the secondary aperture are offset.
Claim 20
Dependent Claim
14 words
The apparatus of claim 17 wherein the secondary pleat extends above the secondary aperture.
Claim 21
Dependent Claim
19 words
The apparatus of claim 17 wherein the secondary aperture straddles at least one of the pair of upstream creases.
Claim 22
Dependent Claim
17 words
The apparatus of claim 17 wherein the secondary pleat hinges on two sides of the secondary aperture.
Claim 23
Dependent Claim
18 words
The apparatus of claim 17 wherein the secondary pleat is shaped substantially the same as the secondary aperture.
Claim 24
Dependent Claim
13 words
The apparatus of claim 17 wherein the secondary aperture is rectangular in shape.
Claim 25
Dependent Claim
29 words
The apparatus of claim 17 wherein the secondary aperture is formed by a pair of slits perpendicular to and across at least one of the pair of upstream creases.
Claim 26
Dependent Claim
29 words
The apparatus of claim 17 wherein the upstream fold across the secondary pleat is reversed such that the secondary pleat projects in the same direction as the downstream crease.
Claim 27
Dependent Claim
12 words
The apparatus of claim 17 wherein the second media member is collapsible.
Claim 28
Dependent Claim
12 words
The apparatus of claim 17 wherein the second media member is voidless.
Claim 29
Dependent Claim
11 words
The apparatus of claim 17 further comprising a third media member.
Claim 30
Dependent Claim
34 words
The apparatus of claim 17 wherein the third media member is attached to the downstream crease such that the second media member is positioned between the first media member and the third media member.
Claim 31
Dependent Claim
14 words
The apparatus of claim 17 wherein the third media member comprises a filtering mesh.
Claim 32
Dependent Claim
76 words
A filter apparatus comprising: a first media member comprising: a plurality of alternating upstream folds and downstream folds; a wall connecting the upstream folds to the downstream folds; and a pair of slits through the wall and across the downstream fold such that the first media member is voidless in a flat state and such that the pair of slits forms an aperture with a pleat at least partially covering the aperture in a corrugated state.
Claim 33
Dependent Claim
76 words
A filter apparatus comprising: a first media member comprising: a plurality of alternating upstream folds and downstream folds; a wall connecting the upstream folds to the downstream folds; and a pair of slits through the wall and across the downstream fold such that the first media member is voidless in a flat state and such that the pair of slits forms an aperture with a pleat at least partially covering the aperture in a corrugated state.
Claim 34
Dependent Claim
19 words
The apparatus of claim 31 further comprising hinge means for connecting the pleat to a perimeter of the aperture.
Claim 35
Dependent Claim
18 words
The apparatus of claim 32 wherein the pleat and the perimeter of the aperture form a diamond shape.
Claim 36
Dependent Claim
40 words
The apparatus of claim 33 wherein the pleat further comprises a downstream fold portion which is inverted relative to the downstream fold such that the downstream fold portion of the pleat projects in the same direction as the upstream folds.
Claim 37
Dependent Claim
16 words
The apparatus of claim 34 wherein in a collapsed state the wall abuts an adjacent wall.
Claim 38
Dependent Claim
55 words
The apparatus of claim 34 further comprising: a second media member comprising: a plurality of alternating upstream creases and downstream creases; a wall connecting the upstream creases to the downstream creases; and air exit means for allowing air to pass through the second media member such that the upstream folds mate with the upstream creases.
Claim 39
Dependent Claim
71 words
The apparatus of claim 36 wherein said air exit means comprises: a pair of secondary slits disposed through the wall, the pair of secondary slits forming a secondary aperture when the second media member is in the corrugated state and forming a secondary pleat at least partially blocking air passing through the second media member; and a secondary hinge portion connecting the secondary pleat to a perimeter of the secondary aperture.
Claim 40
Dependent Claim
15 words
The apparatus of claim 37 wherein the upstream crease across the secondary pleat is inverted.
Claim 41
Dependent Claim
12 words
The apparatus of claim 38 wherein the second media member is collapsible.
Claim 42
Dependent Claim
17 words
The apparatus of claim 39 , further comprising a third media member formed of a filtering mesh.
Claim 43
Dependent Claim
101 words
A filter apparatus for removing air entrained particulates comprising: a first media member comprising: a pair of upstream folds; a downstream fold interposed between the pair of upstream folds; a wall connecting each of the pair of upstream folds to the downstream fold; an aperture formed by a pair of slits perpendicular to and across the downstream fold and positioned on the wall between the pair of upstream folds; and a pleat hinged to an edge of the aperture, wherein the downstream fold across the pleat is reversed such that the pleat projects in the same direction as the upstream folds.
Claim 44
Dependent Claim
101 words
A filter apparatus for removing air entrained particulates comprising: a first media member comprising: a pair of upstream folds; a downstream fold interposed between the pair of upstream folds; a wall connecting each of the pair of upstream folds to the downstream fold; an aperture formed by a pair of slits perpendicular to and across the downstream fold and positioned on the wall between the pair of upstream folds; and a pleat hinged to an edge of the aperture, wherein the downstream fold across the pleat is reversed such that the pleat projects in the same direction as the upstream folds.
Claim 45
Dependent Claim
12 words
The apparatus of claim 41 wherein the pleat extends above the aperture.
Claim 46
Dependent Claim
16 words
The apparatus of claim 42 wherein the pleat covers at least a portion of the aperture.
Claim 47
Dependent Claim
12 words
The apparatus of claim 43 wherein the aperture straddles the downstream fold.
Claim 48
Dependent Claim
15 words
The apparatus of claim 44 wherein the pleat hinges on two sides of the aperture.
Claim 49
Dependent Claim
13 words
The apparatus of claim 45 wherein the pleat is integral with the wall.
Claim 50
Dependent Claim
28 words
The apparatus of claim 46 wherein a center of the pleat has a different length than an area where the pleat hinges to the sides of the aperture.
Claim 51
Dependent Claim
16 words
The apparatus of claim 46 wherein the pleat is shaped substantially the same as the aperture.
Claim 52
Dependent Claim
12 words
The apparatus of claim 48 wherein the aperture is rectangular in shape.
Claim 53
Dependent Claim
18 words
The apparatus of claim 49 wherein the pleat and a border around the aperture form a diamond shape.
Claim 54
Dependent Claim
12 words
The apparatus of claim 50 wherein the first media member is voidless.
Claim 55
Dependent Claim
19 words
The apparatus of claim 51 wherein the downstream fold is positioned generally parallel to the pair of upstream folds.
Claim 56
Dependent Claim
12 words
The apparatus of claim 52 wherein the first media member is collapsible.
Claim 57
Dependent Claim
71 words
The apparatus of claim 53 further comprising a second media comprising: a pair of upstream creases; a downstream crease positioned generally parallel to and interposed between the pair of upstream creases; a secondary wall connecting each of the pair of upstream creases to the downstream crease; a secondary aperture positioned on the secondary wall between the pair of upstream creases; and a secondary pleat hinged to an edge of the aperture.
Claim 58
Dependent Claim
51 words
A filter apparatus comprising: a plurality of alternating upstream folds and downstream folds; a wall connecting the upstream folds to the downstream folds; and a pleat formed by a pair of slits through the wall and across the downstream folds, the pleat projecting in the same direction as the upstream folds.
Claim 59
Dependent Claim
51 words
A filter apparatus comprising: a plurality of alternating upstream folds and downstream folds; a wall connecting the upstream folds to the downstream folds; and a pleat formed by a pair of slits through the wall and across the downstream folds, the pleat projecting in the same direction as the upstream folds.
Claim 60
Dependent Claim
16 words
The apparatus of claim 55 further comprising an aperture covered at least partially by the pleat.
Claim 61
Dependent Claim
18 words
The apparatus of claim 56 wherein the pleat and a perimeter of the aperture form a diamond shape.
Claim 62
Dependent Claim
19 words
The apparatus of claim 56 wherein the pleat is hinged at opposite ends to a perimeter of the aperture.
Claim 63
Dependent Claim
21 words
The apparatus of claim 58 wherein the downstream fold across the pleat is centrally located between the opposite ends oft pleat.
Claim 64
Dependent Claim
10 words
The apparatus of claim 55 wherein the pleat is continuous.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-06-30 | 2006-12-30 | 2007-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-30 | 2010-12-30 | 2011-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-30 | 2014-12-30 | 2015-07-01 | $7700.00 | Window Closed / Lapsed |