Patent US3889679A successfully refreshed from Google Patents.
US3889679A
Expired / Lapsed
US
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Disposable diaper with holes or wells
Assignee: Colgate Palmolive Co
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Filing: 1974-02-04
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Granted: 1975-06-17
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Expires: 1994-02-04
Abstract
Abstract A disposable diaper comprising an absorbent body and a water impervious backing sheet wherein the absorbent body is provided with a multiplicity of fluid passages extending through the absorbent body, whereby fluid may flow, in one portion of the diaper, directly through the absorbent body for flow along the backing sheet so as to be absorbed in remote portions of the absorbent body. The passages also serve to reduce the bulk of the absorbent body in the crotch region and thereby improve the fit and comfort of the diaper.
Inventors
- 👤 Glenn N Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:38
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A disposable diaper comprising an absorbent body and a flexible water impervious backing sheet, said absorbent body comprising a continuous integral mass of fibers formed into a sheet having an inner surface and having an outer surface disposed adjacent said backing sheet, said absorbent body having a multiplicity of openings therein extending therethrough defining fluid passages from said inner surface to said outer surface, whereby fluid may flow from said inner to said outer surface through said openings, said absorbent body being free of the backing sheet throughout a sufficient area intermediate the openings to permit unimpeded flow of fluid along a surface of the backing sheet to regions of the absorbent body remote the openings and absorption therein.
Claim 2
Dependent Claim
119 words
A disposable diaper comprising an absorbent body and a flexible water impervious backing sheet, said absorbent body comprising a continuous integral mass of fibers formed into a sheet having an inner surface and having an outer surface disposed adjacent said backing sheet, said absorbent body having a multiplicity of openings therein extending therethrough defining fluid passages from said inner surface to said outer surface, whereby fluid may flow from said inner to said outer surface through said openings, said absorbent body being free of the backing sheet throughout a sufficient area intermediate the openings to permit unimpeded flow of fluid along a surface of the backing sheet to regions of the absorbent body remote the openings and absorption therein.
Claim 3
Dependent Claim
22 words
A diaper as claimed in claim 1 wherein said passages are distributed substantially uniformly over the full extent of said absorbent body.
Claim 4
Dependent Claim
23 words
A diaper as claimed in claim 1 wherein said passages are cylindrical and have a diameter of between about 1/4 and 1 inch.
Claim 5
Dependent Claim
25 words
A diaper as claimed in claim 1 wherein said absorbent body further comprises a water pervious sheet on each side of said mass of fibers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |