US4795453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dog bone shape insert for channeling flow to ends of feminine napkin
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1987-11-20
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Granted: 1989-01-03
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Expires: 2007-11-20
Abstract
Abstract The pad of the invention is comprised of a permeable cover and an impermeable backing member with an absorbent therebetween. The pad is provided with an absorbent that has at least two components. One component is a fluid transfer member that is generally in a dog bone shape. This transfer member may be formed from a generally rectangular member that has good longitudinal transfer of fluid. The generally rectangular member is provided with cuts going inward toward the center and perpendicular to each longitudinal edge at points about one-quarter of the total longitudinal length from each end. Each of these cuts extends about a third of the distance of the width of the pad forming a flap on each longer side of the rectangular planar member. The flaps are folded upward such that their ends are adjacent. This results in the formation of a dog bone shape absorbent with a thicker middle bridge portion connecting planar end pieces, placing a reservoir absorbent such as wood fluff around the insert such that the upstanding flap portion reaches to about the same height as the upper portion of the bulk absorbent. This results in a pad that presents a fluid transfer member exposed immediately below the permeable bodyside member in the longitudinal center of the pad.
Inventors
- 👤 Dexter L. Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/537; A61F13/53708; A61F13/53713; A61F2013/53721; A61F2013/53734; A61F2013/53765; A61F2013/53786
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
105 words
A pad for absorption of human exudate comprising a bodyside permeable member, a liquid impermeable backing member and an absorbent between said cover and said backing member wherein said absorbent comprises a reservoir absorbent and a dog bone shape fluid transfer absorbent, said dog bone shape absorbent comprising planar end pieces and a bridging portion of said dog bone that extends between said planar end pieces and is thicker than said planar end pieces of said dog bone shape fluid transfer absorbent and wherein said bridging portion extends in said pad from adjacent said backing member upward to an area immediately below said permeable member.
Claim 2
Dependent Claim
105 words
A pad for absorption of human exudate comprising a bodyside permeable member, a liquid impermeable backing member and an absorbent between said cover and said backing member wherein said absorbent comprises a reservoir absorbent and a dog bone shape fluid transfer absorbent, said dog bone shape absorbent comprising planar end pieces and a bridging portion of said dog bone that extends between said planar end pieces and is thicker than said planar end pieces of said dog bone shape fluid transfer absorbent and wherein said bridging portion extends in said pad from adjacent said backing member upward to an area immediately below said permeable member.
Claim 3
Dependent Claim
33 words
The pad of claim 1 wherein said fluid transfer absorbent is thicker in the narrow portion of said dog bone shape absorbent so as to extend to said area immediately below said cover.
Claim 4
Dependent Claim
12 words
The pad of claim 1 wherein said fluid transfer member is embossed.
Claim 5
Dependent Claim
26 words
The pad of claim 2 wherein said fluid transfer member comprises a generally rectangular member that has two flaps folded together to form said thicker portion.
Claim 6
Dependent Claim
44 words
The pad of claim 1 wherein the ends of said dog bone shape fluid transfer absorbent extends between said reservoir absorbent and said liquid impermeable backing and said bridge portion of said dog bone absorbent extends between said impermeable backing and said permeable member.
Claim 7
Dependent Claim
21 words
The pad of claim 5 wherein said fluid transfer member preferentially transfers fluid from said transfer member to said reservoir absorbent.
Claim 8
Dependent Claim
18 words
The pad of claim 5 wherein said fluid transfer member comprises a laminate of meltblown polymer and coform.
Claim 9
Dependent Claim
21 words
The pad of claim 5 wherein said bridge portion extending through said reservoir absorbent comprises folds of said fluid transfer absorbent.
Claim 10
Dependent Claim
19 words
The pad of claim 5 wherein said fluid transfer member is formed by folding a generally rectangular planar sheet.
Claim 11
Dependent Claim
28 words
A fluid transfer member for a pad for absorption of human exudate comprising a generally planar fibrous member having two enlarged portions separated by a narrower thicker portion.
Claim 12
Dependent Claim
28 words
A fluid transfer member for a pad for absorption of human exudate comprising a generally planar fibrous member having two enlarged portions separated by a narrower thicker portion.
Claim 13
Dependent Claim
8 words
The member of claim 10 comprising meltblown fibers.
Claim 14
Dependent Claim
10 words
The member of claim 10 further comprising longitudinal embossed areas.
Claim 15
Independent Claim
74 words
A method of forming a fluid transfer member for a pad for absorption of human exudate comprising providing a planar rectangular fibrous absorbent having longitudinal edges longer than the ends of said pad, cutting at two locations on each of the longitudinal edges about one-third of the distance to the longitudinal center of said absorbent, and folding the center portions of each longitudinal edge toward each other until they meet forming an upraised area.
Claim 16
Independent Claim
74 words
A method of forming a fluid transfer member for a pad for absorption of human exudate comprising providing a planar rectangular fibrous absorbent having longitudinal edges longer than the ends of said pad, cutting at two locations on each of the longitudinal edges about one-third of the distance to the longitudinal center of said absorbent, and folding the center portions of each longitudinal edge toward each other until they meet forming an upraised area.
Claim 17
Dependent Claim
15 words
The method of claim 13 further comprising adhesively connecting said center portions where they meet.
Claim 18
Independent Claim
98 words
A method of forming a pad for absorption of human exudate comprising providing a planar rectangular fibrous liquid transfer absorbent having longitudinal edges longer than the ends of said pad, cutting at two locations on each of the longitudinal edges about one-third of the distance to the longitudinal center line of said absorbent, and folding the center portions of each longitudinal edge toward each other until they meet, adhesively connecting said center portions where they meet to form an upraised center portion, placing a bulk absorbent overlaying all of said liquid transfer absorbent excepting the upraised center portions.
Claim 19
Independent Claim
98 words
A method of forming a pad for absorption of human exudate comprising providing a planar rectangular fibrous liquid transfer absorbent having longitudinal edges longer than the ends of said pad, cutting at two locations on each of the longitudinal edges about one-third of the distance to the longitudinal center line of said absorbent, and folding the center portions of each longitudinal edge toward each other until they meet, adhesively connecting said center portions where they meet to form an upraised center portion, placing a bulk absorbent overlaying all of said liquid transfer absorbent excepting the upraised center portions.
Claim 20
Dependent Claim
33 words
The method of claim 15 further comprising providing a liquid permeable web adjacent said bulk absorbent and said center portion an impermeable member underlying said pad on the side opposing said permeable member.
Claim 21
Dependent Claim
12 words
The pad of claim 1 wherein said reservoir absorbent comprises wood fluff.
Claim 22
Dependent Claim
15 words
The pad of claim 1 wherein said dog bone shape fluid transfer absorbent comprises coform.
Claim 23
Dependent Claim
14 words
The pad of claim 1 wherein said fluid transfer absorbent comprises a carded web.
Claim 24
Dependent Claim
18 words
The pad of claim 1 wherein said fluid transfer member comprises a hydrophobic component and a hydrophilic component.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |