US4386932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent article
Assignee: Individual
•
Filing: 1981-10-21
•
Granted: 1983-06-07
•
Expires: 2001-10-21
Abstract
Abstract There is provided an improved sanitary napkin which utilizes a sheet metal substrate. The sheet metal substrate acts as a barrier to liquid flow. However, it includes a plurality of embossments having small holes therein which permit the sanitary napkin to breathe while also serving as a heat sink. The sanitary napkin also includes fluid absorbent layers overlying the sheet metal substrate.
Inventors
- 👤 Linda F. Pitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/514; A61F13/51474; A61F13/51476; A61F13/51401; A61F2013/51095; A61F2013/51409; A61F2013/51411; A61F2013/51486; A61F2013/51492
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
An improved sanitary napkin comprising: a first layer of fluid-absorbent material, a metal sheet, portions of said metal sheet are attached to and adjacent to said absorbent layer, said metal sheet having at least one embossment therein, at least one hole through said embossment; at least one well in said metal sheet located near said embossment, said well adapted to collect bodily fluids should said fluids penetrate through said first layer of fluid-absorbent material; when said napkin is worn said fluid-absorbent layer is positioned between the human body and said metal sheet whereby said napkin is breathable without high risk of the penetration of menstrual fluids completely through said napkin.
Claim 2
Dependent Claim
110 words
An improved sanitary napkin comprising: a first layer of fluid-absorbent material, a metal sheet, portions of said metal sheet are attached to and adjacent to said absorbent layer, said metal sheet having at least one embossment therein, at least one hole through said embossment; at least one well in said metal sheet located near said embossment, said well adapted to collect bodily fluids should said fluids penetrate through said first layer of fluid-absorbent material; when said napkin is worn said fluid-absorbent layer is positioned between the human body and said metal sheet whereby said napkin is breathable without high risk of the penetration of menstrual fluids completely through said napkin.
Claim 3
Dependent Claim
29 words
An sanitary napkin as set forth in claim 1, further including a plurality of embossments in said metal sheet, substantially all said embossments having at least one hole therein.
Claim 4
Dependent Claim
41 words
A sanitary napkin as set forth in claim 1, further including a second layer of absorbent material, said second layer adapted to absorb more fluid than said first layer, said first layer being between said second layer and said metal sheet.
Claim 5
Dependent Claim
21 words
A sanitary napkin as set forth in claim 3, wherein said first layer is gauze and said second layer is cotton.
Claim 6
Dependent Claim
15 words
A sanitary napkin as set forth in claim 1, wherein said sheet metal is aluminum.
Claim 7
Dependent Claim
38 words
A sanitary napkin as set forth in claim 2, further including a plurality of wells located between each embossment, said wells adapted to collect bodily fluids should said fluids penetrate through said first layer of fluid absorbent material.
Claim 8
Dependent Claim
16 words
A sanitary napkin as set forth in claim 6, wherein said wells include absorbent material therein.
Claim 9
Dependent Claim
76 words
An improved sanitary napkin comprising: a first layer of fluid absorbent material, said first layer being gauze, a metal sheet having a plurality of embossments, a plurality of wells each located between adjacent embossments, said first layer of fluid absorbent material adjacent to the tops of said embossments and overlying the tops of said wells, at least one hole through the top of each embossment; a second layer of absorbent material situated above said first layer.
Claim 10
Dependent Claim
76 words
An improved sanitary napkin comprising: a first layer of fluid absorbent material, said first layer being gauze, a metal sheet having a plurality of embossments, a plurality of wells each located between adjacent embossments, said first layer of fluid absorbent material adjacent to the tops of said embossments and overlying the tops of said wells, at least one hole through the top of each embossment; a second layer of absorbent material situated above said first layer.
Claim 11
Dependent Claim
23 words
A sanitary napkin as set forth in claim 8, wherein portions of said first layer of fluid absorbent material extend into said wells.
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) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |