Patent US6162272A successfully refreshed from Google Patents.
US6162272A
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US
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Accordion filter insert having an elastic sealing lip unitary with a frame of a filter element
Assignee: Carl Freudenberg KG
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Filing: 1999-05-06
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Granted: 2000-12-19
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Expires: 2019-05-06
Abstract
Abstract An accordion filter insert has a frame formed about the filter material. The frame has an elastically deformable sealing lip on the periphery of the frame. The elastically deformable sealing lip is formed of the same material as the frame itself. The sealing lip and frame are formed as a unitary piece.
Inventors
- 👤 Udo Michaelis
- 👤 Dieter Linse
- 👤 Jorgen Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:58
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/0001; B01D46/0002; B01D46/0005; B01D46/10; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; F; F24; F24F; F24F13/00; F24F13/28; B01D2271/00; B01D2271/02; B01D2271/027; B29L; B29L2016/00; B29L2031/00; B29L2031/14; Y; Y10; Y10S; Y10S264/00; Y10S264/48; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
63 words
An accordion filter insert comprising: a filter medium; a polymer frame surrounding and containing the filter medium, said frame having an elastic sealing lip that is unitary with and composed of the same material as the frame, and is connected to the frame at a junction, wherein the sealing lip has a cross section that is reduced near its junction with the frame.
Claim 2
Dependent Claim
63 words
An accordion filter insert comprising: a filter medium; a polymer frame surrounding and containing the filter medium, said frame having an elastic sealing lip that is unitary with and composed of the same material as the frame, and is connected to the frame at a junction, wherein the sealing lip has a cross section that is reduced near its junction with the frame.
Claim 3
Dependent Claim
72 words
An accordion filter insert comprising: a filter medium; a polymer frame surrounding and containing the filter medium, said frame having an elastic sealing lip that is unitary with and composed of the same material as the frame, and is connected to the frame at a junction, wherein the sealing lip has a wedge-shaped profile and wherein the sealing lip has a cross section that is reduced near its junction with the frame.
Claim 4
Dependent Claim
72 words
An accordion filter insert comprising: a filter medium; a polymer frame surrounding and containing the filter medium, said frame having an elastic sealing lip that is unitary with and composed of the same material as the frame, and is connected to the frame at a junction, wherein the sealing lip has a wedge-shaped profile and wherein the sealing lip has a cross section that is reduced near its junction with the frame.
Claim 5
Dependent Claim
35 words
An accordion filter insert as set forth in one of claims 1 or 2, wherein the frame and sealing lip are made of a material selected from the group consisting of polypropylene, acrylonitrile-butadiene-styrene, and polyester.
Claim 6
Dependent Claim
17 words
An accordion filter insert as set forth in claim 1, wherein the sealing lip is a diaphragm.
Claim 7
Dependent Claim
18 words
An accordion filter insert as set forth in claim 1, wherein the sealing lip has a wedge-shaped profile.
Claim 8
Dependent Claim
18 words
An accordion filter insert as set forth in claim 4, wherein the sealing lip has a wedge-shaped profile.
Claim 9
Dependent Claim
32 words
An accordion filter insert as set forth in one of claims 1 or 2, wherein the junction between the sealing lip and the frame is in the form of a film hinge.
Claim 10
Dependent Claim
30 words
An accordion filter insert as set forth in claim 5, wherein the sealing lip of the frame is at an acute angle with respect to the plane of the frame.
Claim 11
Dependent Claim
39 words
An accordion filter insert as set forth in one of claims 1 or 2, wherein the sealing lip is set at an angle with respect to the normal of the plane containing the frame of 20 to 89 degrees.
Claim 12
Dependent Claim
34 words
An accordion filter insert as set forth in one of claims 1 or 2, wherein the sealing lip of the frame of the accordion filter insert lies generally in the plane of the frame.
Claim 13
Dependent Claim
34 words
An accordion filter insert as set forth in one of claims 1 or 2, wherein the sealing lip of the frame is at an acute angle with respect to the plane of the frame.
References Cited (Backward Citations)
DE2166432A1
Cited
GB1404631A
Cited
GB1511904A
Cited
JPS5617223A
Cited
GB2150461A
Cited
DE3439255A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-19 | 2004-06-19 | 2004-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-19 | 2008-06-19 | 2008-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-19 | 2012-06-19 | 2012-12-19 | $7700.00 | Window Closed / Lapsed |