Patent US3043463A successfully refreshed from Google Patents.
US3863637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folded disposable diaper
Assignee: Cip Inc
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Filing: 1972-12-08
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Granted: 1975-02-04
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Expires: 1992-12-08
Abstract
Abstract A disposable diaper including an absorbent pad disposed between a backing sheet which resists liquid flow therethrough and a liquid pervious cover sheet. The diaper is folded, using longitudinal folds, into a configuration which in cross section resembles the Greek symbol sigma ( Sigma ) on one side of the longitudinal centerline of the diaper and a reverse sigma on the other side of the diaper. The respective widths and lengths of the pad and backing sheet provide for the fold in contact with the child to be faced by the cover sheet so as to preclude the backing sheet in this fold from contacting the child when the diaper is folded in accordance with the present disclosure.
Inventors
- 👤 Richard C Macdonald
- 👤 Noel E Martin
- 👤 Charles A Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/494; A61F13/49406; A61F13/49413; A61F13/49426; A61F13/49466; A61F13/53; A61F13/531; A61F13/532; A61F2013/5326
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
227 words
In a disposable diaper having a rectangular outline and including an absorbent pad encapsulated between a backing sheet having an exposed surface and a liquid pervious cover sheet, the improvement wherein said cover sheet is wider than said pad and said backing sheet and defines longitudinal side extensions on opposite sides of said diaper, each of said side extensions being wrapped around the side edges of said pad and said backing sheet and bonded to said exposed surface of said backing sheet at a location spaced inwardly from the respective side edge of said backing sheet, each side edge of said diaper being folded along a longitudinal fold line inwardly toward the centerline of said diaper to define a first longitudinal fold, further folded along a second longitudinal fold line away from said centerline and back upon said first fold to define a second longitudinal fold, and further folded along a third longitudinal fold line inwardly toward said centerline and back upon said second fold to define a third longitudinal fold, whereby said side extensions of said cover sheet are exposed on the respective outer surfaces of said third longitudinal folds in position to cover that portion of said backing sheet disposed in the upperside of said third folds and thereby isolate said backing sheet from the skin of the person to whom the diaper is applied.
Claim 2
Dependent Claim
227 words
In a disposable diaper having a rectangular outline and including an absorbent pad encapsulated between a backing sheet having an exposed surface and a liquid pervious cover sheet, the improvement wherein said cover sheet is wider than said pad and said backing sheet and defines longitudinal side extensions on opposite sides of said diaper, each of said side extensions being wrapped around the side edges of said pad and said backing sheet and bonded to said exposed surface of said backing sheet at a location spaced inwardly from the respective side edge of said backing sheet, each side edge of said diaper being folded along a longitudinal fold line inwardly toward the centerline of said diaper to define a first longitudinal fold, further folded along a second longitudinal fold line away from said centerline and back upon said first fold to define a second longitudinal fold, and further folded along a third longitudinal fold line inwardly toward said centerline and back upon said second fold to define a third longitudinal fold, whereby said side extensions of said cover sheet are exposed on the respective outer surfaces of said third longitudinal folds in position to cover that portion of said backing sheet disposed in the upperside of said third folds and thereby isolate said backing sheet from the skin of the person to whom the diaper is applied.
Claim 3
Dependent Claim
19 words
The disposable diaper of claim 1 wherein said absorbent pad and said backing sheet are substantially coextensive in width.
Claim 4
Dependent Claim
29 words
The disposable diaper of claim 1 wherein said absorbent pad is shorter than said backing sheet and disposed substantially centrally thereof to define end extensions of said backing sheet.
Claim 5
Dependent Claim
47 words
The disposable diaper of claim 3 wherein said cover sheet is substantially coextensive in length with said backing sheet whereby said cover sheet overlies said backing sheet in the diaper ends to provide lesser thickness of said diaper in the ends than in the central portion thereof.
Claim 6
Dependent Claim
88 words
The disposable diaper of claim 1 and including liquid impervious cross strips overlying a portion of each end of said absorbent pad on the surface thereof facing away from said backing sheet and extending from the respective ends of said pad and betweeN said backing sheet and said cover sheet, said backing sheet, cover sheet and said cross strips at each end of said diaper being bonded together along a bond line extending transversely of said diaper adjacent each of said diaper ends to seal the diaper ends.
Claim 7
Dependent Claim
50 words
The disposable diaper of claim 5 wherein each of said strips is wider than said pad but more narrow than said cover sheet whereby the opposite side edges of each strip are wrapped around the side edges of respective pad end to seal the side edges of said pad end.
Claim 8
Dependent Claim
40 words
The disposable diaper of claim 1 wherein each of said side extensions of said cover sheet is bonded to the exposed surface of said backing sheet along a longitudinal bond line extending substantially the entire length of said backing sheet.
Claim 9
Dependent Claim
44 words
The disposable diaper of claim 7 wherein said longitudinal bond line is disposed inwardly toward the centerline of said diaper by a distance which causes said bond line to be disposed on the underside of said third longitudinal fold when said diaper is folded.
Claim 10
Dependent Claim
41 words
The disposable diaper of claim 1 wherein said absorbent pad includes a quantity of fluff, at least one tissue web covering at least one surface of said fluff, and a plurality of spaced apart bonds securing said fluff to said web.
Claim 11
Dependent Claim
67 words
The disposable diaper of claim 1 and including at least two tack bonds maintaining the folds on either side of the diaper substantially in their folded positions during use of the diaper, one bond being between the base of the diaper and the underside of the first fold, and one bond being between the upper side of the second fold and the underside of the third fold.
Claim 12
Dependent Claim
19 words
The disposable diaper of claim 10 wherein said tack bonds join only adjacent cover sheet portions in said folds.
Claim 13
Dependent Claim
16 words
The disposable diaper of claim 1 wherein said backing sheet comprises a liquid impervious plastic material.
References Cited (Backward Citations)
US3036573A
Cited
US3180335A
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US3572342A
Cited
US3520303A
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US3683916A
Cited
US3729005A
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |