Patent US4537819A successfully refreshed from Google Patents.
US4537819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrub-wipe fabric
Assignee: Kendall Co
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Filing: 1984-12-05
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Granted: 1985-08-27
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Expires: 2004-12-05
Abstract
Abstract A non-woven fabric is formed from a reticulated foam combined with at least one layer of a nonwoven web. This unbonded composite fabric is then entangled together by passing it under jets of water, which are under high pressure. The resulting fabric structure has stiff foam protrusions, exiting the nonwoven fabric to function as bristles.
Inventors
- 👤 Walter E. Schortmann
- 👤 Dennis Metrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:35
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; B32B5/02; B32B5/022; B32B5/08; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0276; B32B2262/04; B32B2262/06; B32B2262/062; B32B2262/14; B32B2307/00; B32B2307/70; B32B2307/72; B32B2307/726; B32B2307/728; B32B2432/00; B32B5/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249986; Y10T442/00; Y10T442/60; Y10T442/647
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
49 words
A composite wipe fabric comprising: a reticulated foam sheet material disposed in a surface-to-surface relation to at least one layer of a nonwoven web, said foam material and said web being hydroentangled together so as to cause portions of said foam to penetrate said web as bristles protruding therefrom.
Claim 2
Dependent Claim
49 words
A composite wipe fabric comprising: a reticulated foam sheet material disposed in a surface-to-surface relation to at least one layer of a nonwoven web, said foam material and said web being hydroentangled together so as to cause portions of said foam to penetrate said web as bristles protruding therefrom.
Claim 3
Dependent Claim
16 words
The fabric of claim 1 wherein said reticulated foam is a stiff low density polymeric foam.
Claim 4
Dependent Claim
15 words
The fabric of claim 1 wherein said reticulated foam shall have least 70% void volume.
Claim 5
Dependent Claim
21 words
The fabric of claim 1 wherein said reticulated foam may have a density of between 1.50 to 3.0 pounds per foot.
Claim 6
Independent Claim
78 words
A method of making a composite wipe fabric, which comprises the steps of: (a) depositing at least one layer of a nonwoven web and a sheet of reticulated foam onto a screen in a surface-to-surface relation to each other; (b) passing said screen with said web and foam under high pressure water; (c) causing said web and said foam to become entangled and to form a bonded composite; (d) drying said composite; and, (e) collecting said composite fabric;
Claim 7
Independent Claim
78 words
A method of making a composite wipe fabric, which comprises the steps of: (a) depositing at least one layer of a nonwoven web and a sheet of reticulated foam onto a screen in a surface-to-surface relation to each other; (b) passing said screen with said web and foam under high pressure water; (c) causing said web and said foam to become entangled and to form a bonded composite; (d) drying said composite; and, (e) collecting said composite fabric;
Claim 8
Dependent Claim
43 words
The method of making the composite wipe fabric of claim 5, which further comprises the steps of depositing said composite on a drum screen and passing said drum screen under a second set of high pressure water jets to further entangle said composite.
Claim 9
Dependent Claim
16 words
The method of claim 5 wherein said reticulated foam is a stiff low density polymeric foam.
Claim 10
Dependent Claim
15 words
The method of claim 5 wherein said reticulated foam shall have least 70% void volume.
Claim 11
Dependent Claim
21 words
The method of claim 5 wherein said reticulated foam may have a density of between 1.50 to 3.00 pounds per foot.
Claim 12
Dependent Claim
19 words
The method of claim 5 wherein said water pressure shall range between 300 to 2500 pounds per square inch.
Claim 13
Dependent Claim
19 words
The method of claim 6 wherein said water pressure shall range between 300 to 2500 pounds per square inch.
References Cited (Backward Citations)
US3441464A
Cited
US3532588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |