US3559648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diaper
Assignee: Primerica Inc
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Filing: 1969-03-07
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Granted: 1971-02-02
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Expires: 1989-03-07
Abstract
Abstract A contoured disposable diaper having a greater concentration of absorptive cellulose fiber material toward one end and thereby adapted for maximum absorptive capacity in use on both male and female infants by end for end reversal of the diaper for strategic location of the more absorptive area as dictated by the sex of the infant. The liner is preferably apertured for more efficient moisture reduction of semisolid waste materials and a central channel in the absorptive pad promotes even distribution of liquid waste for absorption throughout the pad area.
Inventors
- 👤 Stanley I Mason Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/493; A61F13/51; A61F13/511; A61F13/512; A61F13/5121; A61F13/5122; A61F13/515; A61F13/53; A61F13/534; A61F13/53409; A61F13/53418; A61F13/491; A61F13/4915; A61F2013/4512; A61F13/513; A61F2013/51355; A61F2013/51372
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
A disposable diaper having a middle layer comprising: a pad of absorptive fibrous cellulose material, an Outer layer of a moisture-barrier sheet material and an inner layer of a moisture-permeable high wet strength fibrous sheet material; said absorptive pad being trapezoidal in shape and having pairs of slits directed inwardly in a converging manner from each of the nonparallel sides of the trapezoid from points near the ends of said sides to define foldable panel portions lying between said pairs of slits; said panel portions being infolded to form in said pad a narrowed central area of double thickness; said inner, moisture-permeable layer overlying said pad with said panels infolded and having the margins of said inner layer extending beyond the margins of said pad; said outer, moisture-barrier layer underlying said pad with said panels infolded and having the margins of said outer layer substantially coincident with the margins of said inner, moisture-permeable layer; and said inner and outer layers being adhered in the marginal areas lying outside the margins of the middle absorptive pad area.
Claim 2
Dependent Claim
176 words
A disposable diaper having a middle layer comprising: a pad of absorptive fibrous cellulose material, an Outer layer of a moisture-barrier sheet material and an inner layer of a moisture-permeable high wet strength fibrous sheet material; said absorptive pad being trapezoidal in shape and having pairs of slits directed inwardly in a converging manner from each of the nonparallel sides of the trapezoid from points near the ends of said sides to define foldable panel portions lying between said pairs of slits; said panel portions being infolded to form in said pad a narrowed central area of double thickness; said inner, moisture-permeable layer overlying said pad with said panels infolded and having the margins of said inner layer extending beyond the margins of said pad; said outer, moisture-barrier layer underlying said pad with said panels infolded and having the margins of said outer layer substantially coincident with the margins of said inner, moisture-permeable layer; and said inner and outer layers being adhered in the marginal areas lying outside the margins of the middle absorptive pad area.
Claim 3
Dependent Claim
39 words
A diaper according to claim 1 wherein said infolded panel portions of said pad fail to abut in the central area of said pad, thereby leaving a narrow centrally located channel between the infolded edges of said panel portions.
Claim 4
Dependent Claim
31 words
A diaper according to claim 1 wherein said inner moisture-permeable layer is provided with a plurality of apertures located in the area overlying said infolded panel portions of said absorptive pad.
Claim 5
Dependent Claim
24 words
A diaper according to claim 3, wherein said apertures are of varying size in a range up to about one-half square inch in area.
Claim 6
Dependent Claim
35 words
A diaper according to claim 4, wherein said apertures of larger size are positioned in the central ares of said pad and said apertures of smaller size are positioned more remotely from said central area.
Claim 7
Dependent Claim
37 words
A diaper according to claim 1, wherein suitable indicia are applied near an end edge of the diaper, said indicia directing the positioning of the diaper for most efficient diapering of an infant of a specified sex.
Claim 8
Dependent Claim
37 words
A diaper according to claim 1, wherein tabs bearing a pressure-sensitive adhesive coating on one side thereof extend outwardly from opposite side edges of the diaper adjacent the junction of said side edges with an end edge.
Claim 9
Dependent Claim
37 words
A diaper according to claim 7, wherein an additional tab bearing on one side thereof a pressure-sensitive adhesive coating extends from an end edge of said diaper for attachment to an item of clothing of an infant.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |