Patent US4624668A successfully refreshed from Google Patents.
US4624668A
Expired / Lapsed
US
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Method for cottonwool tampon
Assignee: VP Schickedanz AG
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Filing: 1984-01-23
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Granted: 1986-11-25
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Expires: 2004-01-23
Abstract
Abstract A method of making a cottonwool tampon incorporating a recovery cord in which a length of cottonwool strip is wrapped in a fluff-free covering material without any accumulations of material or seams being necessary or being formed at the front end. According to the invention, a curtain of covering material is draped into the feed path of the length of cottonwool strip in such a way that, as the cottonwool strip advances, the covering material is folded around its leading edge and is applied to the upper and lower surfaces of the length of the cottonwool strip.
Inventors
- 👤 Hans P. Siegers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:53
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
201 words
A method for the manufacture of a fluff-free cottonwool tampon having a section of cottonwool encased in a fluff-free covering material and a recovery cord associated therewith comprising: (a) moving a section of cottonwool having at least a top, front edge, and bottom in a horizontal path; (b) draping a sheet of fluff-free covering material, whose surface area is sufficient to cover the combined surface areas of the top, forward edge, and bottom of said section, directly in the path of said moving section, in a plane perpendicular to the direction of movement of said section; (c) butting the forward edge of said section against the approximate center of said sheet; (d) continuing the forward motion of said section until said sheet is wrapped around the top, forward edge, and bottom surfaces of said section and extends a substantially uniform distance beyond each lateral edge of said section other than said forward edge; (e) joining together by seamless attachment the pair of top and bottom covering material extensions present on each side edge of said section; and (f) attaching a recovery cord to the tampon by associating said cord with said tampon before said section has been encased by said sheet.
Claim 2
Independent Claim
201 words
A method for the manufacture of a fluff-free cottonwool tampon having a section of cottonwool encased in a fluff-free covering material and a recovery cord associated therewith comprising: (a) moving a section of cottonwool having at least a top, front edge, and bottom in a horizontal path; (b) draping a sheet of fluff-free covering material, whose surface area is sufficient to cover the combined surface areas of the top, forward edge, and bottom of said section, directly in the path of said moving section, in a plane perpendicular to the direction of movement of said section; (c) butting the forward edge of said section against the approximate center of said sheet; (d) continuing the forward motion of said section until said sheet is wrapped around the top, forward edge, and bottom surfaces of said section and extends a substantially uniform distance beyond each lateral edge of said section other than said forward edge; (e) joining together by seamless attachment the pair of top and bottom covering material extensions present on each side edge of said section; and (f) attaching a recovery cord to the tampon by associating said cord with said tampon before said section has been encased by said sheet.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said recovery cord is attached by sewing.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein said seamless attachment is by sealing with sealing rollers.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein the covering material extensions present at each rear edge of said section are sealed by means of a sealing band or adhesive.
Claim 6
Dependent Claim
27 words
The method of claim 1 wherein the covering material extensions present at each rear edge of said section are pressed against the rear end of said section.
Claim 7
Dependent Claim
28 words
The method of claim 1 wherein the covering material extensions present at each rear edge of said section are sealed in the same manner as said side edges.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein said sheet comprises a non-woven synthetic fiber material weighing about 10-20 g/m 2 .
Claim 9
Independent Claim
201 words
A method for the manufacture of a fluff-free cottonwool tampon having a section of cottonwool encased in a fluff-free covering material and a recovery cord associated therewith comprising: (a) moving a section of cottonwool having at least a top, front edge, and bottom in a horizontal path; (b) draping a sheet of fluff-free covering material, whose surface area is sufficient to cover the combined surface areas of the top, forward edge, and bottom of said section, directly in the path of said moving section, in a plane perpendicular to the direction of movement of said section; (c) butting the forward edge of said section against the approximate center of said sheet; (d) continuing the forward motion of said section until said sheet is wrapped around the top, forward edge, and bottom surfaces of said section and extends a substantially uniform distance beyond each lateral edge of said section other than said forward edge; (e) joining together by seamless attachment the pair of top and bottom covering material extensions present on each side edge of said section; and (f) attaching a recovery cord to the tampon by associating said cord with said tampon after said section has been encased by said sheet.
Claim 10
Independent Claim
201 words
A method for the manufacture of a fluff-free cottonwool tampon having a section of cottonwool encased in a fluff-free covering material and a recovery cord associated therewith comprising: (a) moving a section of cottonwool having at least a top, front edge, and bottom in a horizontal path; (b) draping a sheet of fluff-free covering material, whose surface area is sufficient to cover the combined surface areas of the top, forward edge, and bottom of said section, directly in the path of said moving section, in a plane perpendicular to the direction of movement of said section; (c) butting the forward edge of said section against the approximate center of said sheet; (d) continuing the forward motion of said section until said sheet is wrapped around the top, forward edge, and bottom surfaces of said section and extends a substantially uniform distance beyond each lateral edge of said section other than said forward edge; (e) joining together by seamless attachment the pair of top and bottom covering material extensions present on each side edge of said section; and (f) attaching a recovery cord to the tampon by associating said cord with said tampon after said section has been encased by said sheet.
Claim 11
Dependent Claim
13 words
The method of claim 8 wherein said recovery cord is attached by sewing.
Claim 12
Dependent Claim
15 words
The method of claim 8 wherein said seamless attachment is by sealing with sealing rollers.
Claim 13
Dependent Claim
28 words
The method of claim 8 wherein the covering material extensions present at each rear edge of said section are sealed by means of a sealing band or adhesive.
Claim 14
Dependent Claim
27 words
The method of claim 8 wherein the covering material extensions present at each rear edge of said section are pressed against the rear end of said section.
Claim 15
Dependent Claim
30 words
The method of claim 8 wherein said wherein the covering material extensions present at each rear edge of said section are sealed in the same manner as said side edges.
Claim 16
Dependent Claim
20 words
The method of claim 8 wherein said sheet comprises a non-woven synthetic fiber material weighing about 10-20 g/m 2 .
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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |