Patent US6045598A successfully refreshed from Google Patents.
US6045598A
Expired / Lapsed
US
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Filter insert
Assignee: Carl Freudenberg KG
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Filing: 1998-12-23
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Granted: 2000-04-04
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Expires: 2018-12-23
Abstract
Abstract A filter insert which is insertable in a sealing manner into a filter housing includes an accordion fold pack whose end walls extend perpendicularly with respect to the longitudinal direction of the filter pack. Each of the end walls is surrounded in a sealing manner by a shape-stabilizing, clamp-shaped reinforcing element, each of the reinforcing elements being integrally formed in one piece with a gasket. The gasket is capable of being placed, in a sealing manner under elastic prestressing, against the adjacent housing wall of the filter housing.
Inventors
- 👤 Jurgen Fath
- 👤 Uwe Felber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D35/00; B01D35/30; B01D46/0002; B01D46/0005; B01D46/0027; B01D46/0036; B01D46/10; B01D2201/00; B01D2201/34; B01D2271/00; B01D2271/02; B01D2271/027
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
A filter insert assembly, comprising: a filter in the form of an accordion fold pack extending along a longitudinal direction and terminating in end walls that extend perpendicularly to the longitudinal direction, said fold pack defining a plurality of fold lines that extend perpendicularly to the longitudinal direction; a housing for containing the accordion fold pack; a shape-stabilizing clamp-shaped reinforcing element that surrounds each said end wall in a sealing manner, the reinforcing element having an integral gasket, wherein in an operative configuration the gasket is placed in a sealing manner, under elastic prestressing, against a respective adjacent housing wall of the filter housing.
Claim 2
Dependent Claim
104 words
A filter insert assembly, comprising: a filter in the form of an accordion fold pack extending along a longitudinal direction and terminating in end walls that extend perpendicularly to the longitudinal direction, said fold pack defining a plurality of fold lines that extend perpendicularly to the longitudinal direction; a housing for containing the accordion fold pack; a shape-stabilizing clamp-shaped reinforcing element that surrounds each said end wall in a sealing manner, the reinforcing element having an integral gasket, wherein in an operative configuration the gasket is placed in a sealing manner, under elastic prestressing, against a respective adjacent housing wall of the filter housing.
Claim 3
Dependent Claim
22 words
A filter insert as set forth in claim 1, wherein the reinforcing elements and the gaskets are made of the same material.
Claim 4
Dependent Claim
22 words
A filter insert as set forth in claim 1, wherein the end walls and the reinforcing elements are joined together by adhesion.
Claim 5
Dependent Claim
21 words
A filter insert as set forth in claim 1, wherein the end walls are surrounded by the reinforcing elements without adhesion.
Claim 6
Dependent Claim
21 words
A filter insert as set forth in claim 2, wherein the end walls are surrounded by the reinforcing elements without adhesion.
Claim 7
Dependent Claim
25 words
A filter insert as set forth in claim 1, wherein the accordion fold pack and the reinforcing elements constitute a unit capable of being preassembled.
Claim 8
Dependent Claim
29 words
A filter insert as set forth in claim 1, wherein the reinforcing elements have an essentially U-shaped configuration, and surround edges of the end walls in a sealing manner.
Claim 9
Dependent Claim
29 words
A filter insert as set forth in claim 4, wherein the reinforcing elements have an essentially U-shaped configuration, and surround edges of the end walls in a sealing manner.
Claim 10
Dependent Claim
24 words
A filter insert as set forth in claim 1, wherein the accordion fold pack is made of a nonwoven fabric having activated charcoal particles.
Claim 11
Dependent Claim
28 words
A filter insert as set forth in claim 1, wherein the reinforcing elements have a narrowed open cross-section in the area of the openings of said reinforcing elements.
Claim 12
Dependent Claim
50 words
A filter insert as set forth in claim 10, wherein the openings are bounded, in each case, by two sealing strips associated together in a tong-shaped arrangement, which are integrally formed in one piece with the reinforcing element, and contact the end wall in a sealing manner under elevated prestressing.
Claim 13
Dependent Claim
35 words
A filter insert as set forth in claim 1, wherein the gasket is formed by a sealing lip which together with the reinforcing element bounds a V-shaped cross-section opening in the direction of incoming flow.
Claim 14
Dependent Claim
35 words
A filter insert as set forth in claim 11, wherein the gasket is formed by a sealing lip which together with the reinforcing element bounds a V-shaped cross-section opening in the direction of incoming flow.
Claim 15
Dependent Claim
17 words
A filter insert as set forth in claim 1, wherein the reinforcing elements are made of polypropylene.
References Cited (Backward Citations)
US5509950A
Cited
US5849187A
Cited
US5792229A
Cited
US5620505A
Cited
US5755844A
Cited
US5879423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-04 | 2003-10-04 | 2004-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-04 | 2007-10-04 | 2008-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-04 | 2011-10-04 | 2012-04-04 | $7700.00 | Window Closed / Lapsed |