US4445241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover for pillows, mattresses and the like
Assignee: Individual
•
Filing: 1980-03-11
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Granted: 1984-05-01
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Expires: 2000-03-11
Abstract
Abstract An air tight and fluid tight cover for padded bodies, mattresses and the like. The cover has a top, a bottom and a plurality of side parts. At least one opening provides ventilation between the interior of the cover and the ambient atmosphere. At least two of the side parts are formed by at least an interior, middle and exterior layer of material. Air passage openings offset with respect to each other are provided in the interior and middle layers of material. At least one filter is disposed between the middle and outer layer of material. A plurality of connecting seams extend partially transversely across the width of the side part from diametrically opposite points of the upper and lower longitudinal edges of the side parts toward a longitudinal center line bisecting the side part. The connecting seams define a plurality of pockets in which the filters are disposed. The connecting seams also define air passages between the individual layers of material for trapping coarse granular particles therein.
Inventors
- 👤 Sigrid Ender
- 👤 Ottmar Ender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:57
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/02; A47G9/0238; A47G9/0253; A47C; A47C27/00; A47C27/002; A47C27/005; A47C27/006; A47C31/00; A47C31/007; A47C31/10; A47C31/105; A61; A61G; A61G7/00; A61G7/05; A61G7/057
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
205 words
An improved air-tight and fluid-tight cover for padded bodies, mattresses and the like, wherein the cover has at least one ventilation opening for regulating the temperature and humidity of the padded body which is enclosed by the cover, and including means for filtering the air circulating between the cover and the ambient atmosphere, said cover having a top part, a bottom part and a plurality of side parts, at least two side parts of said plurality of side parts being formed by means of a plurality of contiguous layers of material, comprising at least one inner, one outer and one middle layer, the inner and middle layer of said parts having air passage openings, which are offset with respect to each other, and at least one filter means being disposed between the middle and outer layers of said side parts, the improvement comprising in combination said inner, middle and outer layers of material being connected to each other by means of a plurality of first connecting seams extending substantially transversely to the longitudinal extents of said side parts across a portion of their widths, at least two contiguous first connecting seams defining at least one pocket therebetween, said filter means being disposed in said pocket.
Claim 2
Dependent Claim
205 words
An improved air-tight and fluid-tight cover for padded bodies, mattresses and the like, wherein the cover has at least one ventilation opening for regulating the temperature and humidity of the padded body which is enclosed by the cover, and including means for filtering the air circulating between the cover and the ambient atmosphere, said cover having a top part, a bottom part and a plurality of side parts, at least two side parts of said plurality of side parts being formed by means of a plurality of contiguous layers of material, comprising at least one inner, one outer and one middle layer, the inner and middle layer of said parts having air passage openings, which are offset with respect to each other, and at least one filter means being disposed between the middle and outer layers of said side parts, the improvement comprising in combination said inner, middle and outer layers of material being connected to each other by means of a plurality of first connecting seams extending substantially transversely to the longitudinal extents of said side parts across a portion of their widths, at least two contiguous first connecting seams defining at least one pocket therebetween, said filter means being disposed in said pocket.
Claim 3
Dependent Claim
56 words
The improved air-tight and fluid-tight cover as set forth in claim 1, wherein each side part has an upper and lower longitudinal edge, wherein said first connecting seams form pairs of first connecting seams extending from diametrically opposite points of said longitudinal edges to points slightly spaced from the center line longitudinally bisecting said side parts.
Claim 4
Dependent Claim
29 words
The improved air-tight and fluid-tight cover as set forth in claim 2, wherein each pair of said first pairs of connecting seams forms at least one air passage therebetween.
Claim 5
Dependent Claim
53 words
The improved air-tight and fluid-tight cover as set forth in claim 3, wherein said outer layer of material ends at a pair of first connecting seams partly defining said pocket, which pair of first connecting seams is the second pair defining said pocket relative to the air flow direction out of said cover.
Claim 6
Dependent Claim
44 words
The improved air-tight and fluid-tight cover as set forth in claim 2, including at least one fastening means extending along the center line longitudinally bisecting a side part to provide an opening when unzipped for the insertion of a padded body into said cover.
Claim 7
Dependent Claim
31 words
The improved air-tight and fluid-tight cover as set forth in claim 5, including at least one gripping strap secured to at least one of said side parts having said fastening means.
Claim 8
Dependent Claim
29 words
The improved air-tight and fluid-tight cover as set forth in claim 1, wherein the air passage openings in said inner layer are disposed opposite one of said filter means.
Claim 9
Dependent Claim
27 words
The improved air-tight and fluid-tight cover as set forth in claim 1, wherein said air passage openings in said middle layer are disposed between said filter means.
Claim 10
Dependent Claim
28 words
The improved air-tight and fluid-tight cover as set forth in claim 1, wherein said filter means comprise a fleece consisting of fine, randomly arranged fibers of synthetic material.
Claim 11
Dependent Claim
17 words
The cover as set forth in claim 9, wherein said fleece is made of an absorbant material.
Claim 12
Dependent Claim
84 words
The improved air-tight and fluid-tight cover as set forth in claim 1, wherein air outlet, respectively inlet openings are disposed in said outer layer, and wherein at least two filter means are arranged between said air passage opening in said inner layer and air outlet, respectively inlet opening in said outer layer, a first one of said two filter means being disposed between said outer and middle layers and a second one of said two filter being disposed between said middle and inner layers.
Claim 13
Dependent Claim
20 words
The cover as set forth in claim 1, including folds of material disposed between adjacent side parts of the cover.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |