Patent US3744494A successfully refreshed from Google Patents.
US3744494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diaper with improved containment characteristics
Assignee: Procter and Gamble Co
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Filing: 1970-07-10
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Granted: 1973-07-10
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Expires: 1990-07-10
Abstract
Abstract A disposable diaper construction includes a water impervious plastic backing sheet and, preferably, a hydrophobic, moisturepermeable topsheet. An absorbent pad or core is interposed between the backing sheet and the topsheet. Discontinuities in the absorbent core provide lines of isolation between several adjacent but separated core portions. The topsheet and backing sheet are continuous in the relatively narrow areas which form the lines of isolation. The fold lines of the diaper preferably coincide with the lines of isolation. This structure results in improved fluid containment as the lines of isolation between the adjoining core portions provide a barrier to sidewise fluid flow such that liquids tend to flow lengthwise of the diaper. In a preferred configuration, the diaper has excellent fitting characteristics in relation to the contours of the body of the infant, particularly around the legs, and this results in further efficiencies from the standpoint of fluid containment.
Inventors
- 👤 M Marsan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:07
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49001; A61F13/53; A61F13/531; A61F13/532; A61F13/534; A61F13/53409; A61F2013/4512; A61F2013/4568; A61F2013/4581
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
41 words
A disposable diaper as claimed in claim 1 wherein the absorbent core is divided by lines of isolation into a central area, an intermediate lateral area on either side thereof and an outer area adjacent each of said intermediate lateral areas.
Claim 2
Dependent Claim
39 words
A disposable diaper as claimed in claim 1 including a plurality of lines of isolation and wherein said means comprises a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.
Claim 3
Dependent Claim
47 words
A disposable diaper as claimed in claim 1 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
Claim 4
Dependent Claim
24 words
A disposable diaper as claimed in claim 1 wherein said line of isolation is from about 1/4 inch to about 3/8 inch in width.
Claim 5
Dependent Claim
39 words
A disposable diaper as claimed in claim 2 including a plurality of lines of isolation and wherein said means is a line of attachment between the topsheet and the backing sheet in the areas of the lines of isolation.
Claim 6
Dependent Claim
47 words
A disposable diaper as claimed in claim 2 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
Claim 7
Dependent Claim
24 words
A disposable diaper as claimed in claim 3 wherein said lines of isolation are from about 1/4 inch to about 3/8 inch in width.
Claim 8
Dependent Claim
47 words
A disposable diaper as claimed in claim 3 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
Claim 9
Dependent Claim
47 words
A disposable diaper as claimed in claim 6 wherein said diaper has a plurality of lines of isolation each having a geometrically hyperbolic characteristic and a central axis intermediate its end extremities, said central axis being nearer the front edge of the diaper than the back edge.
Claim 10
Dependent Claim
113 words
In a disposable diaper having an absorbent core interposed between a moisture-permeable topsheet and a backing sheet, an improvement, comprising: a said absorbent core being divided into separated portions and having a discontinuity of absorbent material between said portions, b said discontinuity forming a line of isolation intermediate said separated portions, c said backing sheet being continuous in the area of said line of isolation, d whereby said line of isolation between the separated portions of the absorbent core provides a fluid barrier for inhibiting fluid flow in the diaper from a portion on one side of the line of isolation to a portion on the other side of the line of isolation.
Claim 11
Dependent Claim
22 words
A disposable diaper as claimed in claim 11 wherein the width of the line of isolation is substantially uniform along its length.
Claim 12
Dependent Claim
29 words
A diaper as claimed in claim 11 including means in cooperation with said absorbent core for maintaining said line of isolation between adjacent separated portions of the absorbent core.
Claim 13
Dependent Claim
21 words
A diaper as claimed in claim 13 wherein the width of the line of isolation is substantially uniform along its length.
Claim 14
Dependent Claim
16 words
A diaper as claimed in claim 11 wherein the backing sheet is a water impervious layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |