Patent US4239792A successfully refreshed from Google Patents.
US4239792A
Expired / Lapsed
US
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Surface wiping device
Assignee: Procter and Gamble Co
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Filing: 1979-02-05
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Granted: 1980-12-16
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Expires: 1999-02-05
Abstract
Abstract Disposable devices useful for cleaning and wiping hard surfaces. The devices have a core interposed between and laminated to two outer layers. The core is preferably an absorbent paper web, while the outer layers are preferably apertured nonwoven fabrics having defined properties. The wiping device is strong, absorbent, and will retain sufficient water after manual wringing to clean soiled surfaces, and will leave the cleaned surface essentially dry.
Inventors
- 👤 Raymond J. Ludwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; B; B32; B32B; B32B2432/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/60; Y10T442/697
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
172 words
A disposable surface wiping device comprising one inner absorbent element and at least two surface contacting elements wherein said surface wiping device has an absorbent capacity greater than about 5.9 grams per gram of device, a dry horizontal wicking rate less than about 16 seconds, a wet horizontal wicking rate less than about 16 seconds, a distribution factor of from about 0.2 to about 1.7, and an effective use time greater than about 40 seconds; wherein said surface contacting elements each have an absorbent capacity greater than about 6.5 grams per gram of element, a wet horizontal wicking rate less than about 27 seconds, and a compressibility of from about 15 to about 35%; wherein said inner absorbent element has an absorbent capacity greater than about 6.5 grams per gram of element, a dry horizontal wicking rate less than about 30 seconds, and a wet horizontal wicking rate less than about 20 seconds; and wherein said surface wiping device is strong enough for practical use and leaves a wiped surface essentially dry.
Claim 2
Dependent Claim
172 words
A disposable surface wiping device comprising one inner absorbent element and at least two surface contacting elements wherein said surface wiping device has an absorbent capacity greater than about 5.9 grams per gram of device, a dry horizontal wicking rate less than about 16 seconds, a wet horizontal wicking rate less than about 16 seconds, a distribution factor of from about 0.2 to about 1.7, and an effective use time greater than about 40 seconds; wherein said surface contacting elements each have an absorbent capacity greater than about 6.5 grams per gram of element, a wet horizontal wicking rate less than about 27 seconds, and a compressibility of from about 15 to about 35%; wherein said inner absorbent element has an absorbent capacity greater than about 6.5 grams per gram of element, a dry horizontal wicking rate less than about 30 seconds, and a wet horizontal wicking rate less than about 20 seconds; and wherein said surface wiping device is strong enough for practical use and leaves a wiped surface essentially dry.
Claim 3
Dependent Claim
28 words
The surface wiping device of claim 1 wherein said surface contacting elements each have a basis weight of from about 18 to about 95 grams per square meter.
Claim 4
Dependent Claim
15 words
The surface wiping device of claim 2 wherein said surface contacting elements are essentially identical.
Claim 5
Dependent Claim
29 words
The surface wiping device of claim 2 or 3 wherein said inner absorbent element has a basis weight of from about 16 to about 80 grams per square meter.
Claim 6
Dependent Claim
17 words
The surface wiping device of claim 4 wherein said inner absorbent element comprises more than one subelement.
Claim 7
Dependent Claim
18 words
The surface wiping device of claim 4 wherein said surface contacting elements each comprise more than one subelement.
Claim 8
Dependent Claim
23 words
The surface wiping device of claim 4 wherein said inner absorbent element and said surface contacting elements each comprise more than one subelement.
Claim 9
Dependent Claim
20 words
The surface wiping device of claims 1, 2, or 3 wherein said inner absorbent element comprises more than one subelement.
Claim 10
Dependent Claim
21 words
The surface wiping device of claims 1, 2, or 3 wherein said surface contacting elements each comprise more than one subelement.
Claim 11
Dependent Claim
26 words
The surface wiping device of claims 1, 2, or 3 wherein said inner absorbent element and said surface contacting elements each comprise more than one subelement.
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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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |