Patent US4012809A successfully refreshed from Google Patents.
US4012809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for attaching the free end of a withdrawing tape to a tampon roll
Assignee: Dr Carl Hahn GmbH
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Filing: 1975-04-25
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Granted: 1977-03-22
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Expires: 1995-04-25
Abstract
Abstract An improvement in an apparatus for winding a batt of material in strip form carrying a free end of a withdrawal tape to form a rolled body thereof having withdrawal tape attached thereto which comprise a forked shaped totatable winding mandrel having fork tines, means for moving said winding mandrel back and forth in the plane of movement of said batt of material said fork tines positioned so as to straddle the longitudinal side of said batting material which carries the free end of the withdrawal tape with it, the improvement residing in that said winding mandrel contains an interior bore lengthwise thereof which bore is connected to a vacuum source means for transporting said batt of material in rolled form from said winding mandrel to a subsequent work station disposed on the side of the so-formed roll that carries the free end of the withdrawal tape.
Inventors
- 👤 Niels Warncke
- 👤 Wolfgang Johst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:20
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
In an apparatus for winding a batting strip into a tampon batting roll wherein one end of a withdrawing tape is joined to said batting strip and the other end of said tape is free, and wherein said apparatus comprises a rotatable, forked winding mandrel having fork tines, said mandrel adapted to be positioned adjacent to the longitudinal side of said batting strip which bears the free end of the withdrawing tape with said fork tines straddling said longitudinal side whereby said strip is wound into said roll by rotating said mandrel about an axis perpendicular to said longitudinal side of said strip, the improvement wherein said mandrel is provided with an axial bore therethrough having a first open end adapted to be positioned adjacent to said longitudinal side and a second open end in flow communication with a source of vacuum whereby said free end of said withdrawing tape may be aspirated into said bore when winding said strip.
Claim 2
Dependent Claim
160 words
In an apparatus for winding a batting strip into a tampon batting roll wherein one end of a withdrawing tape is joined to said batting strip and the other end of said tape is free, and wherein said apparatus comprises a rotatable, forked winding mandrel having fork tines, said mandrel adapted to be positioned adjacent to the longitudinal side of said batting strip which bears the free end of the withdrawing tape with said fork tines straddling said longitudinal side whereby said strip is wound into said roll by rotating said mandrel about an axis perpendicular to said longitudinal side of said strip, the improvement wherein said mandrel is provided with an axial bore therethrough having a first open end adapted to be positioned adjacent to said longitudinal side and a second open end in flow communication with a source of vacuum whereby said free end of said withdrawing tape may be aspirated into said bore when winding said strip.
Claim 3
Dependent Claim
101 words
The apparatus of claim 1 wherein the fork tines are defined by first and second slots cut through the mandrel wall and extending axially from one end of the mandrel partially toward the other end, said first slot having a terminal closer to said other end of the mandrel than said second slot whereby when said fork tines straddle said longitudinal side of said strip, said longitudinal side will bear against the terminal of the second slot and be displaced from the terminal of the first slot, said displacement defining an aperture for aspirating the withdrawing tape into the mandrel bore.
Claim 4
Independent Claim
136 words
An apparatus for applying the free end of a withdawing tape to one end of a tampon batting roll, said withdrawing tape having its other end joined to said batting roll, said apparatus comprising: a cylinder having a bore therethrough with one end open and adapted to be positioned adjacent to said one end of said tampon batting roll with said bore coaxially aligned with said batting roll; a piston, slidably disposed within said cylinder bore, said piston having a plurality of apertures therethrough; means for drawing air from said one end of said bore through said aperture whereby said withdrawing tape may be aspirated into said bore and against said apertures; and means for urging said piston against said one end of said batting roll to dispose said withdrawing tape thereon in a random pattern.
Claim 5
Independent Claim
136 words
An apparatus for applying the free end of a withdawing tape to one end of a tampon batting roll, said withdrawing tape having its other end joined to said batting roll, said apparatus comprising: a cylinder having a bore therethrough with one end open and adapted to be positioned adjacent to said one end of said tampon batting roll with said bore coaxially aligned with said batting roll; a piston, slidably disposed within said cylinder bore, said piston having a plurality of apertures therethrough; means for drawing air from said one end of said bore through said aperture whereby said withdrawing tape may be aspirated into said bore and against said apertures; and means for urging said piston against said one end of said batting roll to dispose said withdrawing tape thereon in a random pattern.
Claim 6
Dependent Claim
47 words
The apparatus of claim 3 wherein the axis of the cylinder lies in a substantially horizontal plane and the open end of said bore slants downwardly and away from said one end of said tampon batting roll to facilitate the aspirating of withdrawing tape into said bore.
Claim 7
Dependent Claim
47 words
The apparatus of claim 3 wherein means are provided for positioning and retaining said one end of said tampon batting roll into coaxial alignment with said cylinder, said means comprising a cylindrical, hollow open ended winding cup having an inside diameter larger than that of said piston.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |