Patent US5618324A successfully refreshed from Google Patents.
US5618324A
Expired / Lapsed
US
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Filter insert
Assignee: Mann and Hummel GmbH
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Filing: 1996-08-21
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Granted: 1997-04-08
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Expires: 2016-08-21
Abstract
Abstract A filter insert for the filtering of the fresh air supplied to a motor vehicle interior has an accordion-folded filter element which is self-supporting. Lateral strips coated with an adhesive are provided on the faces which extend on the left and on the right. On the faces which extend in parallel to the folding, angle strips are arranged whose first leg extends along at least three fold edges. The filter element is surrounded along the faces by a foamed-material sealing.
Inventors
- 👤 Bruno Sommer
- 👤 Helmut Luka
- 👤 Thomas Sch urg
- 👤 Siegfried Rapp
- 👤 Nikolaus Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:57
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0001; B01D46/10; B01D46/52; B01D46/521; B01D46/523; B60; B60H; B60H3/00; B60H3/06; B60H3/0658; B01D2265/00; B01D2265/04; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
194 words
A filter insert for filtering air, comprising: a self-supporting accordion-folded filter element that has top and bottom sides, left and right side faces, and end faces which extend parallel to the folds of the filter element; planar lateral strips which are adhesively bonded to the left and the right side faces of the filter element; angle strips having first and second legs, with the first legs arranged on the end faces which extend parallel to the folds of the filter element, and the second legs each extending along the top side over at least one fold edge of the filter element and being adhesively bonded to said at least one fold edge; at least one planar reinforcing strip arranged on the top side of the filter insert extending transversely of and adhesively bonded to fold edges of the filter element; and a foam sealing material extending along the end faces which extend parallel to the folds of the filter element, and the left and right side faces of the filter element, wherein a full extent of the filter element between said left side face and said right side face is exposed to air flow.
Claim 2
Dependent Claim
194 words
A filter insert for filtering air, comprising: a self-supporting accordion-folded filter element that has top and bottom sides, left and right side faces, and end faces which extend parallel to the folds of the filter element; planar lateral strips which are adhesively bonded to the left and the right side faces of the filter element; angle strips having first and second legs, with the first legs arranged on the end faces which extend parallel to the folds of the filter element, and the second legs each extending along the top side over at least one fold edge of the filter element and being adhesively bonded to said at least one fold edge; at least one planar reinforcing strip arranged on the top side of the filter insert extending transversely of and adhesively bonded to fold edges of the filter element; and a foam sealing material extending along the end faces which extend parallel to the folds of the filter element, and the left and right side faces of the filter element, wherein a full extent of the filter element between said left side face and said right side face is exposed to air flow.
Claim 3
Dependent Claim
27 words
A filter insert according to claim 1, wherein the elements which are adhesively bonded to the filter element are provided with an adhesive which is thermally activatable.
Claim 4
Dependent Claim
20 words
A filter insert according to claim 1, further comprising removal clips fastened on lateral ends of the filter by adhesives.
Claim 5
Dependent Claim
20 words
A filter insert according to claim 1, further comprising removal clips fastened on lateral ends of the filter by ultrasonics.
Claim 6
Dependent Claim
32 words
A filter insert according to claim 1, wherein the first legs of the angle strips are adhesively bonded to the end faces which extend parallel to the folds of the filter element.
Claim 7
Dependent Claim
38 words
A filter insert according to claim 1, wherein a full extent of the bottom side of the filter element between said end faces which extend parallel to the folds of the filter element is exposed to air flow.
Claim 8
Dependent Claim
38 words
A filter insert according to claim 5, wherein a full extent of the bottom side of the filter element between said end faces which extend parallel to the folds of the filter element is exposed to air flow.
Claim 9
Dependent Claim
30 words
A filter insert according to claim 1, wherein the angle strips, the lateral strips, the at least one reinforcing strip, and the filter element are made of an identical material.
Claim 10
Dependent Claim
30 words
A filter insert according to claim 7, wherein the angle strips, the lateral strips, the at least one reinforcing strip, and the filter element are made of an identical material.
Claim 11
Dependent Claim
37 words
A filter insert according to claim 1, wherein the angle strips, the at least one reinforcing strip, and the lateral strips have a wall thickness less than or equal to the material thickness of the filter element.
Claim 12
Dependent Claim
37 words
A filter insert according to claim 9, wherein the angle strips, the at least one reinforcing strip, and the lateral strips have a wall thickness less than or equal to the material thickness of the filter element.
Claim 13
Dependent Claim
35 words
A filter insert according to claim 1, wherein the second legs of the angle strips each extend along the top side of the filter element over at least three fold edges of the filter element.
Claim 14
Dependent Claim
153 words
A filter insert for filtering air, comprising: a self-supporting accordion-folded filter element that has top and bottom sides, left and right side faces, and end faces which extend parallel to the folds of the filter element; planar lateral strips which are adhesively bonded to the left and the right side faces of the filter element; and angle strips having first and second legs, with the first legs arranged on the end faces which extend parallel to the folds of the filter element, and the second legs each extending along the top side over at least one fold edge of the filter element, wherein the filter element is adhesively bonded to at least one of said first legs of the angle strips and said second legs of the angle strips, and wherein a full extent of the filter element between said left side face and said right side face is exposed to air flow.
Claim 15
Dependent Claim
153 words
A filter insert for filtering air, comprising: a self-supporting accordion-folded filter element that has top and bottom sides, left and right side faces, and end faces which extend parallel to the folds of the filter element; planar lateral strips which are adhesively bonded to the left and the right side faces of the filter element; and angle strips having first and second legs, with the first legs arranged on the end faces which extend parallel to the folds of the filter element, and the second legs each extending along the top side over at least one fold edge of the filter element, wherein the filter element is adhesively bonded to at least one of said first legs of the angle strips and said second legs of the angle strips, and wherein a full extent of the filter element between said left side face and said right side face is exposed to air flow.
Claim 16
Dependent Claim
55 words
A filter insert according to claim 13, wherein the end faces which extend parallel to the folds of the filter element are adhesively bonded to the first legs of the angle strips, respectively, and at least one fold edge of the filter element is adhesively bonded to the second legs of the angle strips, respectively.
Claim 17
Dependent Claim
37 words
A filter insert according to claim 13, further comprising at least one planar reinforcing strip arranged on the top side of the filter insert extending transversely of and adhesively bonded to fold edges of the filter element.
Claim 18
Dependent Claim
37 words
A filter insert according to claim 14, further comprising at least one planar reinforcing strip arranged on the top side of the filter insert extending transversely of and adhesively bonded to fold edges of the filter element.
Claim 19
Dependent Claim
39 words
A filter insert according to claim 13, further comprising a foam sealing material extending along the end faces which extend parallel to the folds of the filter element, and the left and right side faces of the filter element.
Claim 20
Dependent Claim
39 words
A filter insert according to claim 15, further comprising a foam sealing material extending along the end faces which extend parallel to the folds of the filter element, and the left and right side faces of the filter element.
Claim 21
Dependent Claim
38 words
A filter insert according to claim 13, wherein a full extent of the bottom side of the filter element between said end faces which extend parallel to the folds of the filter element is exposed to air flow.
Claim 22
Dependent Claim
38 words
A filter insert according to claim 16, wherein a full extent of the bottom side of the filter element between said end faces which extend parallel to the folds of the filter element is exposed to air flow.
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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) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |