US5080702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable two-ply filter
Assignee: HOME CARE INDUSTRIES Inc A CORP OF
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Filing: 1990-02-15
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Granted: 1992-01-14
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Expires: 2010-02-15
Abstract
Abstract A disposable two-ply vacuum cleaner bag comprises a highly air permeable inner filter ply of randomly intertangled, discontinuous microfibers of synthetic material and a conventional outer ply of air permeable material.
Inventors
- 👤 Mark D. Bosses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; B01D2239/00; B01D2239/06; B01D2239/0604; B01D2239/0622; B01D2239/064; B01D2239/065; B01D2239/0654; B01D2239/12; B01D2239/1233; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/1334; Y10T442/00; Y10T442/60; Y10T442/603; Y10T442/607
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A disposable filter container having an interior for use primarily for collecting within said interior dust and debris from a vacuum apparatus, and comprising an assembly of juxtaposed plies as follows: an inner filter ply formed of a web of randomly intertangled, discontinuous microfibers of synthetic material comprising fibers of less than about ten microns diameter with an average weight of about 0.6 oz/yd 2 , an individual test weight range of about 0.4 to 1.7 oz/yd 2 , and a Frazier air permeability of greater than about 60 CFM as measured at 0.5 inches H 2 O pressure drop, said inner filter ply forming the surface of the interior of said container; and an outer ply of air pervious filter material.
Claim 2
Dependent Claim
122 words
A disposable filter container having an interior for use primarily for collecting within said interior dust and debris from a vacuum apparatus, and comprising an assembly of juxtaposed plies as follows: an inner filter ply formed of a web of randomly intertangled, discontinuous microfibers of synthetic material comprising fibers of less than about ten microns diameter with an average weight of about 0.6 oz/yd 2 , an individual test weight range of about 0.4 to 1.7 oz/yd 2 , and a Frazier air permeability of greater than about 60 CFM as measured at 0.5 inches H 2 O pressure drop, said inner filter ply forming the surface of the interior of said container; and an outer ply of air pervious filter material.
Claim 3
Dependent Claim
23 words
A filter container according to claim 1, wherein said synthetic material is selected from the group comprising polypropylene, polyethylene, polyethylene terephthalate and polyamides.
Claim 4
Dependent Claim
13 words
A filter container according to claim 2, wherein said synthetic material is polyethylene.
Claim 5
Dependent Claim
13 words
A filter container according to claim 2, wherein said synthetic material is polypropylene.
Claim 6
Dependent Claim
18 words
A filter container according to claim 2, wherein said synthetic material comprises a mixture of polyethylene and polypropylene.
Claim 7
Dependent Claim
18 words
A filter container according to claim 1 or 2 wherein the diameter of said fibers is 4±2 microns.
Claim 8
Dependent Claim
19 words
A filter according to claim 1 or 2, wherein said inner filter ply is formed of melt-blown synthetic material.
Claim 9
Dependent Claim
20 words
A filter container according to claim 1 or 2, wherein said outer ply is formed of filter paper or fabric.
Claim 10
Dependent Claim
15 words
A filter according to claim 8 wherein said outer ply is formed of wood paper.
Claim 11
Dependent Claim
15 words
A filter according to claim 8, wherein said outer ply is formed of hemp paper.
Claim 12
Dependent Claim
14 words
A filter according to claim 8, wherein said outer ply is formed of cloth.
Claim 13
Dependent Claim
26 words
A filter container according to claim 1 or 2, wherein said inner ply has an individual test weight of at most about 0.6 oz/yd 2 .
Claim 14
Dependent Claim
22 words
A filter container according to claim 12, wherein said inner ply has an individual test weight of about 0.6 oz/yd 2 .
Claim 15
Dependent Claim
34 words
A container according to claim 1 or 2, wherein said inner and outer plies are connected together in the vicinity of an inlet which provides fluid communication from said vacuum apparatus to said interior.
Claim 16
Dependent Claim
15 words
A filter container according to claim 8, wherein said outer ply is formed of paper.
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |