US4710189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped disposable diapers with shaped elastically contractible waistbands
Assignee: Procter and Gamble Co
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Filing: 1987-03-03
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Granted: 1987-12-01
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Expires: 2007-03-03
Abstract
Abstract Disposable diapers having elasticized waistbands which are shaped to conform to the wearers' waists and methods of making them. The shaped disposable diapers are made by affixing an elastomeric material having a heat unstable state and a heat stable and elastic state to the diaper while the elastomeric material is in its heat unstable state and then heating the elastomeric material while the diaper is restrained in a folded configuration.
Inventors
- 👤 Glen R. Lash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:22
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49007; A61F13/49009; A61F13/15577; A61F13/15585; A61F13/15593; A61F13/49011; A61F13/49017; A61F13/4902
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A disposable diaper comprising: a liquid permeable topsheet; a liquid impermeable backsheet, said backsheet being affixed to said topsheet; an absorbent element, said absorbent element being interposed between said backsheet and said topsheet; a waistband extending from the laterally extending margin of the diaper to about the laterally extending margin of said absorbent element; fold regions at which said topsheet and said backsheet are folded; and an elastomeric element, said elastomeric element being affixed to said waistband, said elastomeric element having a middle portion of relatively less contraction and a pair of additional portions of relatively more contraction compared to said middle portion, said additional portions being separated by said middle portion.
Claim 2
Dependent Claim
112 words
A disposable diaper comprising: a liquid permeable topsheet; a liquid impermeable backsheet, said backsheet being affixed to said topsheet; an absorbent element, said absorbent element being interposed between said backsheet and said topsheet; a waistband extending from the laterally extending margin of the diaper to about the laterally extending margin of said absorbent element; fold regions at which said topsheet and said backsheet are folded; and an elastomeric element, said elastomeric element being affixed to said waistband, said elastomeric element having a middle portion of relatively less contraction and a pair of additional portions of relatively more contraction compared to said middle portion, said additional portions being separated by said middle portion.
Claim 3
Dependent Claim
14 words
The disposable diaper of claim 1 wherein said elastomeric element gathers said waistband nonuniformly.
Claim 4
Dependent Claim
19 words
The disposable diaper of claim 2 wherein said elastomeric element tends to gather said waistband into a C-shaped configuration.
Claim 5
Dependent Claim
22 words
The disposable diaper of claim 1 wherein said elastomeric element has a nonelastic heat unstable state and an elastic heat stable state.
Claim 6
Dependent Claim
37 words
A diaper as recited in claim 1 wherein said elastomeric element comprises: a further two portions, separated by said middle portion and said pair of additional portions, and of relatively less contraction compared to said additional portions.
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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |