US3886941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaper insert
Assignee: Glad Products Co
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Filing: 1974-06-18
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Granted: 1975-06-03
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Expires: 1994-06-18
Abstract
Abstract A disposable diaper insert for a disposable or non-disposable diaper comprised of, in combination, at least one absorbent pad disposed between a liquid impermeable topsheet and a liquid impermeable bottom sheet, each of said sheets being formed from a hydrophobic material such as a thermoplastic film and each of said films being characterized by a plurality of valvular apertures or openings therein and a system of dimples disposed across the surface thereof.
Inventors
- 👤 John J Duane
- 👤 Charles B Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:13
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/513; A61F13/51305; A61F13/53; A61F13/534; A61F2013/51078; A61F2013/51355; A61F2013/51372; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/53445
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A diaper insert which comprises, in combination, at least one absorbent pad disposed between a liquid impermeable hydrophobic topsheet and a liquid impermeable hydrophobic bottom sheet, each of said sheets having a plurality of valvular openings therein, said valvular openings being substantially closable to retard back flow of liquid absorbed by said absorbent pad through said valvular openings, and a system of dimples disposed on each of said topsheet and bottom sheet, said dimples having a frequency of at least one per square inch of absorbent pad area.
Claim 2
Dependent Claim
88 words
A diaper insert which comprises, in combination, at least one absorbent pad disposed between a liquid impermeable hydrophobic topsheet and a liquid impermeable hydrophobic bottom sheet, each of said sheets having a plurality of valvular openings therein, said valvular openings being substantially closable to retard back flow of liquid absorbed by said absorbent pad through said valvular openings, and a system of dimples disposed on each of said topsheet and bottom sheet, said dimples having a frequency of at least one per square inch of absorbent pad area.
Claim 3
Dependent Claim
88 words
A diaper insert which comprises, in combination, at least one absorbent pad disposed between a liquid impermeable hydrophobic topsheet and a liquid impermeable hydrophobic bottom sheet, each of said sheets having a plurality of valvular openings therein, said valvular openings being substantially closable to retard back flow of liquid absorbed by said absorbent pad through said valvular openings, and a system of dimples disposed on each of said topsheet and bottom sheet, said dimples having a frequency of at least one per square inch of absorbent pad area.
Claim 4
Dependent Claim
88 words
A diaper insert which comprises, in combination, at least one absorbent pad disposed between a liquid impermeable hydrophobic topsheet and a liquid impermeable hydrophobic bottom sheet, each of said sheets having a plurality of valvular openings therein, said valvular openings being substantially closable to retard back flow of liquid absorbed by said absorbent pad through said valvular openings, and a system of dimples disposed on each of said topsheet and bottom sheet, said dimples having a frequency of at least one per square inch of absorbent pad area.
Claim 5
Dependent Claim
65 words
A diaper insert according to claim 1 wherein said plurality of valvular openings are substantially parallel straight slits disposed in longitudinal rows, each slit being angularly disposed with respect to the longitudinal axis of said row and being arranged in a manner such that the end points of each slit lie in a line substantially between the end points of corresponding slits in adjacent rows.
Claim 6
Dependent Claim
48 words
A diaper insert in accordance with claim 2 wherein each slit is from 0.07 to 0.2 inch in length and wherein said slits are present in said topsheet and said bottom sheet in an amount of about 30 to 150 per square inch of topsheet and bottom sheet.
Claim 7
Dependent Claim
36 words
A diaper insert in accordance with claim 1 wherein said dimples are disposed on said topsheet and bottom sheet in an amount of about one to about 100 dimples per square inch of absorbent pad area.
Claim 8
Dependent Claim
35 words
A diaper insert according to claim 1 wherein said dimples are disposed on said topsheet and bottom sheet in an amount of about three to about 25 dimples per square inch of absorbent pad area.
Claim 9
Dependent Claim
35 words
A diaper insert according to claim 1 wherein said dimples are disposed on said topsheet and bottom sheet in an amount of about six to about 15 dimples per square inch of absorbent pad area.
Claim 10
Dependent Claim
26 words
A diaper insert in accordance with claim 1 wherein said dimples have a circular configuration with a diameter of from about 0.025 to about 0.250 inch.
Claim 11
Dependent Claim
57 words
A diaper insert according to claim 1 wherein said topsheet and bottom sheet are each 0.5 to 2.0 mil thick and of substantially The same dimensions and being at least partially adhered to each other around their periphery to form an integrated structure having the absorbent pad substantially enclosed and sandwiched between the topsheet and bottom sheet.
Claim 12
Dependent Claim
18 words
A diaper insert according to claim 8 wherein said topsheet and bottom sheet are fabricated from ethylene-ethyl acrylate.
Claim 13
Dependent Claim
11 words
A diaper insert according to claim 1 having a rectangular configuration.
References Cited (Backward Citations)
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |