US5338253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for an air-conditioning or heating system for a motor vehicle
Assignee: Mahle Behr GmbH and Co KG
•
Filing: 1991-12-05
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Granted: 1994-08-16
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Expires: 2011-12-05
Abstract
Abstract In the case of a filter for an air-conditioning or heating system for a motor vehicle, it is provided that the filter body is formed of a material which is arranged in several layers and is coated with an adsorption agent and, at least on its air outlet side, is covered with an air-permeable textile flat shaped structure.
Inventors
- 👤 Herbert Damsohn
- 👤 Walter Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:08
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/002; B01; B01D; B01D46/00; B01D46/10; B01D46/12; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B60H; B60H3/00; B60H3/06; B60H3/0658; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/25; B01D2259/00; B01D2259/40; B01D2259/41; B01D2259/45; B01D2259/4566; B01D2275/00; B01D2275/10; B01D2275/30; B01D2275/307; B60H2003/0691
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A filter for an air-conditioning or heating system for a motor vehicle, comprising: a filter body made of a material arranged in several layers with open pores which are coated with a granular adsorption agent; and an air-permeable textile flat shaped structure formed of yarns covering only outer surfaces of the filter body at least on its air outlet side, wherein the distances between the yarns of the textile structure are smaller than the outer dimensions of the grains of the granular adsorption agent.
Claim 2
Dependent Claim
84 words
A filter for an air-conditioning or heating system for a motor vehicle, comprising: a filter body made of a material arranged in several layers with open pores which are coated with a granular adsorption agent; and an air-permeable textile flat shaped structure formed of yarns covering only outer surfaces of the filter body at least on its air outlet side, wherein the distances between the yarns of the textile structure are smaller than the outer dimensions of the grains of the granular adsorption agent.
Claim 3
Dependent Claim
14 words
A filter according to claim 1, wherein said granular adsorption agent is activated-carbon granules.
Claim 4
Dependent Claim
22 words
A filter according to claim 1, wherein the textile flat shaped structure surrounds the filter body in the manner of a stocking.
Claim 5
Dependent Claim
26 words
A filter according to claim 1, wherein edges of the textile flat shaped structure are molded into a frame which is molded to the filter body.
Claim 6
Dependent Claim
26 words
A filter according to claim 1, wherein edges of the filter body, together with the textile flat shaped structure, are clamped into a shaft or housing.
Claim 7
Dependent Claim
16 words
A filter according to claim 1, wherein a reinforcing mesh is provided for the filter body.
Claim 8
Dependent Claim
17 words
A filter according to claim 6, wherein the reinforcing mesh is made of a plastically deformable material.
Claim 9
Dependent Claim
14 words
A filter according to claim 7, wherein the plastically deformable material is metal material.
Claim 10
Dependent Claim
29 words
A filter according to claim 7, wherein the reinforcing mesh is arranged in parallel to the layers and is provided with spikes penetrating into at least two connecting layers.
Claim 11
Dependent Claim
29 words
A filter according to claim 8, wherein the reinforcing mesh is arranged in parallel to the layers and is provided with spikes penetrating into at least two connecting layers.
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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) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |