US3854481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tampon having an insertion end of lesser density than the body portion
Assignee: Dr Carl Hahn KG
•
Filing: 1970-12-02
•
Granted: 1974-12-17
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Expires: 1990-12-02
Abstract
Abstract A tampon made of a rolled non-woven fabric having an insertion end and a rolled body portion, the insertion end being compressed to a density less than the density of the rolled body portion, the rolled body portion being radially compressed to a predetermined dense state.
Inventors
- 👤 B Messing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2051; A61F13/206; A61F13/2082; A61F13/2085; Y; Y10; Y10S; Y10S604/00; Y10S604/904; Y10T; Y10T428/00; Y10T428/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A rolled tampon having an insertion end and a withdrawal end, said tampon being made from a continuous non-woven fabric which is rolled about its longitudinal axis thereby forming a rolled body portion, said rolled body portion being radially compressed to a predetermined dense state, said insertion end having a nonwoven fibrous portion protruding from said rolled body portion, the material of said insertion end being axially compressed, said axial compression being of such amount that the material of said insertion end has a density less than the density of the material of said rolled body portion, thereby increasing the rate of absorption of said tampon.
Claim 2
Dependent Claim
106 words
A rolled tampon having an insertion end and a withdrawal end, said tampon being made from a continuous non-woven fabric which is rolled about its longitudinal axis thereby forming a rolled body portion, said rolled body portion being radially compressed to a predetermined dense state, said insertion end having a nonwoven fibrous portion protruding from said rolled body portion, the material of said insertion end being axially compressed, said axial compression being of such amount that the material of said insertion end has a density less than the density of the material of said rolled body portion, thereby increasing the rate of absorption of said tampon.
Claim 3
Dependent Claim
85 words
A rolled tampon according to claim 1 made of a continuous sheet of non-woven fiber, said rolled body portion comprising a plurality of axially rolled layers at least one layer having a greater longitudinal dimension than another layer of said rolled body portion and protruding toward said insertion end, said insertion end comprising the protruding protion from a layer, at least two adjacent layers of said rolled body portion being joined together at the withdrawal end to form at the juncture a continuous curved sheet.
Claim 4
Dependent Claim
54 words
Tampon according to claim 1, wherein said continuous non-woven fabric comprises at least two fabric layers of different widths which are independent of each other and are partially superposed such that one longitudinal side of each mate, and constitutes said withdral end of said tampon and the other longitudinal side constitutes said insertion end.
Claim 5
Dependent Claim
25 words
Tampon according to claim 1, wherein said continuous non-woven fabric is transversely rolled up at an acute angle to the longitudinal axis of the tampon.
Claim 6
Dependent Claim
18 words
Tampon according to claim 1, having been additionally slightly pressed in a direction substantially parallel to its axis.
Claim 7
Dependent Claim
17 words
A rolled tampon according to claim 1 having an integral withdrawal tape connected to said withdrawal end.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |