IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0741193
(2008-11-05)
|
등록번호 |
US-8490805
(2013-07-23)
|
우선권정보 |
FR-07 07790 (2007-11-06) |
국제출원번호 |
PCT/FR2008/051991
(2008-11-05)
|
§371/§102 date |
20100503
(20100503)
|
국제공개번호 |
WO2009/068778
(2009-06-04)
|
발명자
/ 주소 |
- Giraud, Jean-Luc
- Luzzato, Michel
- Mezerette, Jerome
- Flamand, Fabien
|
출원인 / 주소 |
- Tetra Laval Holdings & Finance S.A.
|
대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
This method makes it possible to fabricate a stopper (1) starting from a tubular skirt (12) suitable for surrounding a container neck, and provided both with retainer means for retaining it permanently around the neck, and also with fastener means for fastening it removably to the neck. In this meth
This method makes it possible to fabricate a stopper (1) starting from a tubular skirt (12) suitable for surrounding a container neck, and provided both with retainer means for retaining it permanently around the neck, and also with fastener means for fastening it removably to the neck. In this method, the skirt and a blade (110) are moved in rotation relative to each other about the axis (X-X) of the skirt so that the blade cuts a peripheral line of weakness in the skirt, which line of weakness is made up firstly of through notches and secondly, between said notches around the periphery of the skirt, of breakable bridges that interconnect, in the same direction as the axis, a non-removable portion of the skirt, which portion is provided with the retainer means, and a removable portion of the skirt, which portion is provided with the fastener means. With a view to improving the method simply and inexpensively, provision is made for the skirt and the blade to be driven relative to each other through an angular stroke that is strictly greater than 360°, while progressively modifying the relative axial position between the skirt and the blade by a movement in axial translation (T). The line of weakness is thus in the shape of a helix having its two peripheral ends defining between them a non-breakable strip that permanently interconnects the removable and the non-removable portions of the skirt.
대표청구항
▼
1. A stopper for a container neck, wherein the stopper includes: a tubular skirt suitable for surrounding the neck and provided with a peripheral line of weakness that is cut and made up firstly of through notches that are cut and succeed one another around the periphery of the skirt, and secondly,
1. A stopper for a container neck, wherein the stopper includes: a tubular skirt suitable for surrounding the neck and provided with a peripheral line of weakness that is cut and made up firstly of through notches that are cut and succeed one another around the periphery of the skirt, and secondly, between said notches, of breakable bridges that are adapted to being broken when the stopper is opened for the first time and that, before the stopper is opened for the first time, interconnect a non-removable portion of the skirt, which portion is provided with retainer means for retaining the non-removable portion permanently around the neck, and a removable portion of the skirt, which portion is provided with fastener means for fastening the removable portion removably to the neck; andwherein the line of weakness is a single continuous helix having a first end and a second end, the line of weakness extending between the first end and the second end, and turning through more than 360° so that the second end is disposed above the first end, and the first and second ends define a non-breakable strip between them. 2. A stopper according to claim 1, wherein the strip has a length around the periphery of the skirt of at least 5 mm. 3. A stopper according to claim 1, wherein a portion extending from the first end of the line of weakness and a portion extending from the second end of the line of weakness are not provided with any bridges. 4. A stopper according to claim 1, wherein the removable portion of the skirt is provided with an external drive tab extending over a portion only of the periphery of the skirt and making it possible to drive the removable portion manually so as to disengage it from the neck, and wherein the strip is situated in a peripheral portion of the skirt that is diametrically opposite from the portion associated with the tab. 5. A machine for fabricating the stopper according to claim 1, said machine including: a cutting blade for cutting the skirt and drive means for driving the skirt and the blade in rotation relative to each other;wherein the cutting blade is configured to cut the line of weakness in the skirt,wherein the drive means for driving the skirt and the blade in relative rotation are suitable for driving the skirt and the blade in rotation about a longitudinal axis of the skirt through an angular stroke that is greater than 360°,and wherein the machine further includes means for modifying the relative axial position between the skirt and the blade by a movement in axial translation. 6. A machine according to claim 5, wherein the drive means for driving the skirt and the blade in rotation relative to each other comprises a rotary chuck for causing the skirt to roll against the blade so that the rotary chuck moves in rotation about its own axis, and wherein the means for modifying the axial position comprises both a support plate that is inclined relative to the blade and a resilient compression element, interposed axially between the chuck and an end-wall of the stopper, from which end-wall the skirt extends in the same direction as the axis of the skirt, for holding said end-wall pressed against the support plate. 7. A machine according to claim 6, wherein the chuck extends perpendicularly to the support plate and is provided both with a groove for receiving a sharp edge of the blade when said sharp edge passes through the skirt for performing the cutting, and wherein the chuck is also provided with a drive cam for driving the chuck in axial translation relative to the skirt. 8. A method of fabricating the stopper according to claim 1, wherein the skirt and a blade are moved in rotation relative to each other about a longitudinal axis of the skirt so that the blade cuts the line of weakness in the skirt;wherein the skirt and the blade are driven relative to each other through an angular stroke that is greater than 360° about the axis of the skirt; andwherein, while the skirt and the blade are being driven in rotation relative to each other, the relative axial position between the skirt and the blade is modified by a movement in axial translation. 9. A method according to claim 8, wherein the skirt and the blade are driven in rotation relative to each other through an angular stroke that is greater than 375° about the axis of the skirt. 10. A method according to claim 8, wherein, while the skirt and the blade are being driven in rotation relative to each other through 360° about the axis of the skirt, the relative axial position between the skirt and the blade is modified by at least 0.5 mm. 11. A method according to claim 8, wherein, while the skirt and the blade are being driven relative to each other, an end-wall of the stopper, from which end-wall the skirt extends in the same direction as its axis, is held pressed against a support plate that is inclined relative to the blade.
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