US4318407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folded tampon pledget
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1980-08-28
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Granted: 1982-03-09
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Expires: 2000-08-28
Abstract
Abstract A tampon having a pledget consisting of two rectangular layers of absorbent material which have been overlaid along an edge of each of the layers and then folded along a line bisecting the angle formed by the juncture between the layers. The pledget thus produced has both inner and outer absorptive layers and a containment pocket formed of absorptive material in the fold area.
Inventors
- 👤 Lin-Sun Woon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:33
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/34; A61F13/2051; A61F13/2065; A61F13/2068; A61F13/2082; A61F13/2085; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
55 words
A folded tampon pledget comprising a flat surface having at least four sides, each of said sides being of uneven length, two of said sides being longitudinal, parallel and each forming a right angle with a common transverse side, and the shorter of said longitudinal, parallel sides forming an obtuse angle with a fourth side.
Claim 2
Dependent Claim
55 words
A folded tampon pledget comprising a flat surface having at least four sides, each of said sides being of uneven length, two of said sides being longitudinal, parallel and each forming a right angle with a common transverse side, and the shorter of said longitudinal, parallel sides forming an obtuse angle with a fourth side.
Claim 3
Dependent Claim
28 words
The tampon according to claim 1 wherein the pledget comprises at least two layers thereby forming both inner and outer surfaces with an overlapped edge of said layers.
Claim 4
Dependent Claim
13 words
The tampon according to claim 1 in which said pledget has five sides.
Claim 5
Dependent Claim
15 words
The tampon according to claim 1, 2 or 3 in which said angle is 165°.
Claim 6
Dependent Claim
14 words
The tampon according to claim 1 or 2 in which said angle is 135°.
Claim 7
Dependent Claim
27 words
The tampon according to claim 2 wherein a fluid permeable wrap overlays the outer surface of said layers and at least a portion of said inner surface.
Claim 8
Independent Claim
129 words
A method for making a compressible settable tampon pledget which in its uncompressed state comprises a flat surface having at least four sides, each of said sides being of uneven length, two of said sides being longitudinal parallel and each forming a right angle with a common transverse side, and the shorter of said longitudinal, parallel sides forming an obtuse angle with a fourth side: (a) comprising partially overlapping a rectangular-surfaced layer of relatively stiff compressible cellulosic material with a second layer of rectangular surfaced cellulosic material at one end so that the angle formed by the intersection of the opposite edges of the respective layers are not greater than ninety degrees; (b) folding the two layers about a center line bisecting said angle; and (c) compressing said tampon.
Claim 9
Independent Claim
129 words
A method for making a compressible settable tampon pledget which in its uncompressed state comprises a flat surface having at least four sides, each of said sides being of uneven length, two of said sides being longitudinal parallel and each forming a right angle with a common transverse side, and the shorter of said longitudinal, parallel sides forming an obtuse angle with a fourth side: (a) comprising partially overlapping a rectangular-surfaced layer of relatively stiff compressible cellulosic material with a second layer of rectangular surfaced cellulosic material at one end so that the angle formed by the intersection of the opposite edges of the respective layers are not greater than ninety degrees; (b) folding the two layers about a center line bisecting said angle; and (c) compressing said tampon.
Claim 10
Dependent Claim
42 words
The method of claim 7 in which withdrawal means are added prior to folding by placing an orifice in the approximate center of the overlaid layers and a string is looped underneath the overlapped edge and through said orifice prior to folding.
Claim 11
Dependent Claim
16 words
The method of claim 7 wherein an orifice is introduced in the overlaid area after folding.
Claim 12
Independent Claim
15 words
The method according to claims 7, 8 or 9 wherein the angle formed is 30°.
Claim 13
Independent Claim
15 words
The method according to claims 7, 8 or 9 wherein the angle formed is 90°.
Claim 14
Dependent Claim
15 words
The method according to claim 7 wherein the pledget layers are wrapped prior to overlaying.
Claim 15
Dependent Claim
31 words
The method according to claim 12 wherein the angle between the overlaid layers is 90°, and the wrap is slit on the portion which becomes the inner surface prior to folding.
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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |