US5244703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner bag
Assignee: PNC Bank NA
•
Filing: 1992-06-15
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Granted: 1993-09-14
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Expires: 2012-06-15
Abstract
Abstract A vacuum cleaner filter having an outer textile fabric material laminated to a non-woven composite material. The composite material comprises an inner and an outer cover layer of a spun-bonded, non-woven web material, sandwiching at least one intermediate melt-blown layer.
Inventors
- 👤 Mark Bosses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:27
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/12; B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D2239/00; B01D2239/06; B01D2239/0604; B01D2239/0622; B01D2239/0627; B01D2239/065; B01D2239/0681; B01D2239/12; B01D2239/1291; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1352; Y10T428/1362; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/40; Y10T442/494
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
56 words
A reusable vacuum cleaner bag fabricated from a multi-component sheet, said sheet comprising: an outermost layer of a textile fabric material laminated to a non-woven composite material, said composite material comprising: an inner cover layer of a spun-bonded, non-woven web; at least one intermediate melt-blown layer; and an outer cover layer of a spun-bonded, non-woven web.
Claim 2
Dependent Claim
56 words
A reusable vacuum cleaner bag fabricated from a multi-component sheet, said sheet comprising: an outermost layer of a textile fabric material laminated to a non-woven composite material, said composite material comprising: an inner cover layer of a spun-bonded, non-woven web; at least one intermediate melt-blown layer; and an outer cover layer of a spun-bonded, non-woven web.
Claim 3
Dependent Claim
18 words
The reusable vacuum cleaner bag according to claim 1, wherein said composite material comprises two intermediate melt-blown layers.
Claim 4
Dependent Claim
19 words
The reusable vacuum cleaner bag according to claim 1, wherein said textile fabric is comprised primarily of polyester fibers.
Claim 5
Dependent Claim
28 words
The reusable vacuum cleaner bag according to claim 1, wherein said composite material has a basis weight of between about 5 oza./yd 2 and 5.5 oza./yd. 2 .
Claim 6
Dependent Claim
27 words
The reusable vacuum cleaner bag according to claim 1, wherein said spun-bonded layers and said at least one melt-blown layer are formed from a synthetic thermoplastic material.
Claim 7
Dependent Claim
15 words
The reusable vacuum cleaner bag according to claim 5, wherein said thermoplastic material is polypropylene.
Claim 8
Dependent Claim
32 words
The reusable vacuum cleaner bag according to claim 1, wherein said at least one intermediate melt-blown layer has a basis weight of between about 0.5 oz./yd. 2 and 4 ozs./yd. 2 .
Claim 9
Dependent Claim
30 words
The reusable vacuum cleaner bag according to claim 2, wherein said two melt-blown layers each have a basis weight of between about 0.25 oz./yd. 2 and 2 ozs./yd. 2 .
Claim 10
Dependent Claim
17 words
The reusable vacuum cleaner bag according to claim 1, wherein said composite material comprises one melt-blown layer.
Claim 11
Dependent Claim
28 words
The reusable vacuum cleaner bag according to claim 9, wherein said melt-blown layer has a basis weight of between about 0.5 oz./yd. 2 and 4 ozs./yd. 2 .
Claim 12
Dependent Claim
20 words
The reusable vacuum cleaner bag according to claim 1, wherein said at least one melt-blown layer is comprised of polypropylene.
Claim 13
Dependent Claim
18 words
The reusable vacuum cleaner bag according to claim 1, wherein said inner cover layer is comprised of polypropylene.
Claim 14
Dependent Claim
18 words
The reusable vacuum cleaner bag according to claim 1, wherein said outer cover layer is comprised of polypropylene.
Claim 15
Dependent Claim
27 words
The reusable vacuum cleaner bag according to claim 1, wherein at least one of said inner cover layer and said outer cover layer is comprised of polypropylene.
Claim 16
Dependent Claim
31 words
The reusable vacuum cleaner bag according to claim 1, wherein said inner cover layer, said outer cover layer and said at least one intermediate layer are comprised of the same material.
Claim 17
Dependent Claim
16 words
The reusable vacuum cleaner bag according to claim 1, further comprising an inner textile fabric component.
Claim 18
Dependent Claim
72 words
A reusable vacuum cleaner bag fabricated from a multi-component sheet, said sheet comprising: an outermost layer of a textile fabric material having a basis weight of between about 0.7 oz/yd 2 and 7 oz/yd 2 and being laminated to a non-woven composite material, said composite material comprising: an inner cover layer of a spun-bonded, non-woven web, at least one intermediate melt-blown layer, and an outer cover layer of a spun-bonded, non-woven web.
Claim 19
Dependent Claim
72 words
A reusable vacuum cleaner bag fabricated from a multi-component sheet, said sheet comprising: an outermost layer of a textile fabric material having a basis weight of between about 0.7 oz/yd 2 and 7 oz/yd 2 and being laminated to a non-woven composite material, said composite material comprising: an inner cover layer of a spun-bonded, non-woven web, at least one intermediate melt-blown layer, and an outer cover layer of a spun-bonded, non-woven web.
Claim 20
Dependent Claim
18 words
A reusable vacuum cleaner bag according to claim 17, wherein said composite material comprises two intermediate melt-blown layers.
Claim 21
Dependent Claim
19 words
A reusable vacuum cleaner bag according to claim 17, wherein said textile fabric is comprised primarily of polyester fibers.
Claim 22
Dependent Claim
28 words
A reusable vacuum cleaner bag according to claim 17, wherein said textile fabric has a basis weight of between about 2 ozs./yd. 2 and 6 ozs./yd. 2 .
Claim 23
Dependent Claim
28 words
A reusable vacuum cleaner bag according to claim 17, wherein said composite material has a basis weight of between about 5 ozs./yd. 2 and 5.5 ozs./yd. 2 .
Claim 24
Dependent Claim
23 words
A reusable vacuum cleaner bag according to claim 21, wherein said composite material has a basis weight of about 5.2 ozs./yd. 2 .
Claim 25
Dependent Claim
27 words
A reusable vacuum cleaner bag according to claim 17, wherein said spun-bonded layers and said at least one melt-blown layer are formed from a synthetic thermoplastic material.
Claim 26
Dependent Claim
15 words
A reusable vacuum cleaner bag according to claim 23, wherein said thermoplastic material is polypropylene.
Claim 27
Dependent Claim
32 words
A reusable vacuum cleaner bag according to claim 17, wherein said at least one intermediate melt-blown layer has a basis weight of between about 0.5 oz./yd 2 and 4 ozs./yd. 2 .
Claim 28
Dependent Claim
27 words
A reusable vacuum cleaner bag according to claim 25, wherein said at least one intermediate melt-blown layer has a basis weight of about 1.2 oz./yd 2 .
Claim 29
Dependent Claim
29 words
A reusable vacuum cleaner bag according to claim 18, wherein said two melt-blown layers each have a basis weight of between 0.25 oz./yd. 2 and 2 ozs./yd. 2 .
Claim 30
Dependent Claim
24 words
A reusable vacuum cleaner bag according to claim 27, wherein said two melt-blown layers have a basis weight of about 0.6 oz./yd. 2 each.
Claim 31
Dependent Claim
17 words
A reusable vacuum cleaner bag according to claim 17, wherein said composite material comprises one melt-blown layer.
Claim 32
Dependent Claim
28 words
A reusable vacuum cleaner bag according to claim 29, wherein said melt-blown layer has a basis weight of between about 0.5 oz./yd. 2 and 4 ozs./yd. 2 .
Claim 33
Dependent Claim
23 words
A reusable vacuum cleaner bag according to claim 30, wherein said melt-blown layer has a basis weight of about 1.2 ozs./yd. 2 .
Claim 34
Dependent Claim
20 words
A reusable vacuum cleaner bag according to claim 17, wherein said at least one melt-blown layer is comprised of polypropylene.
Claim 35
Dependent Claim
18 words
A reusable vacuum cleaner bag according to claim 17, wherein said inner cover layer is comprised of polypropylene.
Claim 36
Dependent Claim
18 words
A reusable vacuum cleaner bag according to claim 17, wherein said outer cover layer is comprised of polypropylene.
Claim 37
Dependent Claim
27 words
A reusable vacuum cleaner bag according to claim 32, wherein at least one of said inner cover layer and said outer cover layer is comprised of polypropylene.
Claim 38
Dependent Claim
31 words
A reusable vacuum cleaner bag according to claim 17, wherein said inner cover layer, said outer cover layer and said at least one intermediate layer are comprised of the same material.
Claim 39
Dependent Claim
16 words
A reusable vacuum cleaner bag according to claim 17, further comprising an inner textile fabric component.
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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) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |