US4643727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbant pad
Assignee: Individual
•
Filing: 1985-01-07
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Granted: 1987-02-17
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Expires: 2005-01-07
Abstract
Abstract An absorbant pad having an intermediate plastic bubble layer covered on either side with a continuous layer of absorbant material wherein the bubble layer serves as a reservoir for a liquid that is siphoned around the edges of the bubble layer for storage.
Inventors
- 👤 Richard J. Rosenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/537; A61F13/53743; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F13/51474; A61F2013/51486; A61F2013/51492; A61F2013/530131; A61F2013/530481; A61F2013/530802; A61F2013/53445; A61F13/53708; A61F2013/53721; A61F2013/53765
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
An absorbant diaper construction comprising: a plurality of layers and including at least a pneumatic liquid impervious cellular layer having a top with cells, a bottom and edge; a wicking layer positioned at least above the top of the cellular layer and having portions wrapped around the edges thereof positioned adjacent the bottom of the cellular layer; a bottom liquid impervious layer coextensive with said cellular layer; and, a liquid absorbant layer between said cellular layer and said bottom layer thereof with said pneumatic cellular layer comprising a pair of plastic sheets having a plurality of air cells formed therebetween with unobstructed fluid directing passageways between the air cells, with the cells almost entirely formed in the top plastic sheet and said cellular layer forming a liquid tight barrier against a liquid passing therethrough.
Claim 2
Dependent Claim
134 words
An absorbant diaper construction comprising: a plurality of layers and including at least a pneumatic liquid impervious cellular layer having a top with cells, a bottom and edge; a wicking layer positioned at least above the top of the cellular layer and having portions wrapped around the edges thereof positioned adjacent the bottom of the cellular layer; a bottom liquid impervious layer coextensive with said cellular layer; and, a liquid absorbant layer between said cellular layer and said bottom layer thereof with said pneumatic cellular layer comprising a pair of plastic sheets having a plurality of air cells formed therebetween with unobstructed fluid directing passageways between the air cells, with the cells almost entirely formed in the top plastic sheet and said cellular layer forming a liquid tight barrier against a liquid passing therethrough.
Claim 3
Dependent Claim
22 words
A diaper according to claim 1 wherein the wicking layer completely surrounds the cellular layer including the top, sides and bottom thereof.
Claim 4
Dependent Claim
130 words
A diaper comprising: a plurality of layers and having a pneumatic cellular layer formed of upper and lower sheets of plastic with edges and connected to have a plurality of air cells formed in the upper sheet with unobstructed fluid directing passageways between the air cells; a wicking layer covering the upper sheet and the air cells formed therein with the wicking layer being wrapped around both the edges completely surrounding the upper and lower sheets of plastic forming the top and bottom of the cellular layer, said upper plastic sheet of the cellular layer forming a liquid impervious barrier to the passage of liquid and a liquid absorbant layer having a liquid impervious bottom layer coextensive with said cellular layer positioned between the wicking layer and said bottom layer.
Claim 5
Dependent Claim
130 words
A diaper comprising: a plurality of layers and having a pneumatic cellular layer formed of upper and lower sheets of plastic with edges and connected to have a plurality of air cells formed in the upper sheet with unobstructed fluid directing passageways between the air cells; a wicking layer covering the upper sheet and the air cells formed therein with the wicking layer being wrapped around both the edges completely surrounding the upper and lower sheets of plastic forming the top and bottom of the cellular layer, said upper plastic sheet of the cellular layer forming a liquid impervious barrier to the passage of liquid and a liquid absorbant layer having a liquid impervious bottom layer coextensive with said cellular layer positioned between the wicking layer and said bottom layer.
Claim 6
Dependent Claim
122 words
An absorbant diaper construction comprising: a plurality of layers with the top layer having a liquid impervious upper layer connected with a lower layer to form air cells therewith, with unobstructed fluid directing passageways between the air cells, a bottom and edge; a wicking layer positioned at least above the air cells of the liquid impervious upper layer with portions of the wicking layer wrapped around the edges thereof positioned adjacent the bottom of the lower layer; and, a bottom liquid impervious layer with a liquid absorbant layer positioned in between and coextensive with the air cell top layer and the lowermost bottom wherein the wicking layer substantially completely surrounds the liquid impervious upper layer including the top, edge and bottom thereof.
Claim 7
Dependent Claim
122 words
An absorbant diaper construction comprising: a plurality of layers with the top layer having a liquid impervious upper layer connected with a lower layer to form air cells therewith, with unobstructed fluid directing passageways between the air cells, a bottom and edge; a wicking layer positioned at least above the air cells of the liquid impervious upper layer with portions of the wicking layer wrapped around the edges thereof positioned adjacent the bottom of the lower layer; and, a bottom liquid impervious layer with a liquid absorbant layer positioned in between and coextensive with the air cell top layer and the lowermost bottom wherein the wicking layer substantially completely surrounds the liquid impervious upper layer including the top, edge and bottom thereof.
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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |