초록 ▼

The self-opener closure consists of a pour-out spout (2) which may be sealingly assembled onto a composite packaging or onto a container spout or bottle spout to be closed with film material, of an associated rotary cap (1) as well as a self-opener sleeve (3) arranged within the pour-out spout (2) w

The self-opener closure consists of a pour-out spout (2) which may be sealingly assembled onto a composite packaging or onto a container spout or bottle spout to be closed with film material, of an associated rotary cap (1) as well as a self-opener sleeve (3) arranged within the pour-out spout (2) which may be set into rotation by the rotary cap (1). Force transmission means and guide means are formed on these three elements. These cooperate with one another such that on rotating the rotary cap (1) in the opening direction for the first time the self-opener sleeve (3) firstly in the pour-out spout (2) may be pushed vertically downwards and subsequently may be rotated by approximately 360�� in the horizontal. Because the self-opener sleeve (3) at its lower edge and projecting from this comprises a single, combined piercing and cutting member (9) the film or the composite packaging is first reliably pierced and afterwards a disk is cut cleanly out of it and pivoted downwards.

대표청구항 ▼

The invention claimed is: 1. A self-opener closure for composite packagings or for container spouts to be closed with film material, comprising: a pour-out spout capable of being sealingly assembled onto a composite packaging, a container spout or bottle spout closed with a film material; rotary ca

The invention claimed is: 1. A self-opener closure for composite packagings or for container spouts to be closed with film material, comprising: a pour-out spout capable of being sealingly assembled onto a composite packaging, a container spout or bottle spout closed with a film material; rotary cap for said pour-out spout; and, a self-opener sleeve within said pour-out spout, said self-opener sleeve being rotatable via said rotary cap, and having at a lower edge and projecting from said lower edge of self-opener sleeve, least one combined piercing and cutting member, said self-opener sleeve, said pour-out spout and said rotary cap being equipped with guide and transmission means cooperating with one another, so that upon rotating said rotary cap for an initial time in a direction for opening, said self-opener sleeve is pushable axially downwards in said pour-out spout, the initial time, being without rotation, and for subsequent times, following the initial time, being rotatable about a rotary axis of said self-opener sleeve without axial movement. 2. The self-opener closure according to claim 1, wherein on a lower side of said rotary cap, and concentrically to said lower side, a spout is integrally formed with a projecting edge at a lower end of said spout, over which a nipple, with an inwardly projecting edge on its upper side, is pushable. 3. The self-opener closure according to claim 2, wherein said nipple is connected to said self-opener sleeve via thin-material webs for acting as break-off locations. 4. The self-opener closure according to claim 1, wherein said guide and transmission means on said rotary cap cooperating with one another includes two cylinder wall segments on an inner side of said rotary cap, and a lower edge of said two cylinder wall segments lying in an axial direction form a guide curve cooperating with said force transmission means on said self-opener sleeve, comprising two cams on an upper inner edge of said self-opener sleeve with the guide means cooperating with one another comprising guide ribs on an outer side of said self-opener sleeve and guide webs on an inner side of said pour-out spout, so that upon rotating said rotary cap in said direction for opening for the initial time, said self-opener sleeve is, initially, vertically pushable downwardly into said pour out spout and, subsequently, horizontally rotatable by approximately 360��. 5. The self-opener closure according to claim 1, wherein projecting from said lower edge of said self-opener sleeve are two combined piercing and cutting members approximately diametrically opposite one another, with said guide and force transmission means on said rotary cap cooperating with one another comprising three cylinder wall segments concentric relative to an axis of said rotary cap, with a lower edge of said three cylinder wall segments, lying in an axial direction, forming a guide curve cooperating with said guide and transmission means on said self-opener sleeve comprising three cams on an upper inner edge of said self-opener sleeve and said guide means cooperating with one another comprising guide ribs on an outer side of said self-opener sleeve and guide webs on an inner side of said pour-out spout, so that upon rotating said rotary cap said direction of opening for the initial time, said self-opener sleeve is initially pushable vertically and downwardly into said pour-out spout and, subsequently, rotatable over approximately 180�� in the horizontal. 6. The self-opener closure according to claim 1, wherein said guide and transmission means on said rotary cap include a plurality of cylinder wall segments on an inner side of said rotary cap concentric to an axis of said rotary cap with a lower edge of said rotary cap lying therebelow, in an axial direction, forming two edge sections ascending counter to one another, and displaced to one another in said axial direction in a stepped manner, wherein a first edge section, as seen from below into said rotary cap ascends in a counterclockwise direction from a level of said rotary cap, and a second counter ascending edge section ascends in a clockwise direction from a level of the end of a first ascending edge section, and that said guide and transmission means on said self-opener sleeve includes a plurality of catching means on an upper edge thereof, with each said piercing and cutting member on said self-opener sleeve including a piercing cutter projecting from a lower sleeve edge with a sharpened tip and with cutting edges sharpened in a circumferential direction of said self-opener sleeve, along with said guide and transmission means on said self-opener sleeve cooperating with one another comprising a plurality of guide ribs distributed over its circumference on an outer wall, with in each case two vertical sections and a horizontal section connecting these on an upper side, and guide webs cooperating with said plurality of guide ribs on an inner wall of said pour-out spout, said plurality of guide webs having horizontal sections, wherein in an initial rotational position of said self-opener sleeve applied in said pour-out spout relative to said pour-out spout, extends over circumferential sections on said self-opener sleeve which remain free, wherein at least said two horizontal sections, as seen from above onto said pour-out spout in a clockwise direction, comprise a vertical section connecting thereto, so that upon unturning said rotary cap, said self-opener sleeve is vertically guided therein, so that a catching cam on said pour-out sleeve is pushable downwardly along said vertical sections of said plurality of guide ribs and said plurality of guide webs by said ascending edge section on a cylinder wall segment reaching upwards to said rotary cap, until said catching cam abuts on a step, and subsequently sets by said step into a horizontal rotation below, and along, said horizontal sections of said plurality of guide ribs and said plurality of guide webs. 7. The self-opener closure according to claim 6, wherein said rotary cap is a threaded cap having an inner thread with said pour-out spout being a threaded spout with an outer thread, and that one guide rib of said plurality of guide ribs is distributed on the outer wall of said self-opener sleeve over its circumference and extends over that circumferential region over which said piercing cutter extends, and that that said vertical section of said guide rib, as seen from above in the counterclockwise direction, is located in front of said piercing cutter, thus preceding it on rotation in the counterclockwise direction and extending upwardly to said lower edge of said self-opener sleeve, and at said lower inner edge of said pour-out spout there is formed an inwardly projecting abutment cam, wherein in an initial position of said self-opener sleeve applied in said pour-out spout, bears on location of said sharpened tip of said piercing cutter, wherein an effective height and pitch of a thread on said threaded cap is dimensioned so that said self-opener sleeve is, initially, pushable vertically downwardly by said guide and transmission means up to a screwed-free position of said threaded cap until said piercing cutter projects beyond said lower edge of said pour-out spout, and, subsequently, is rotatably over approximately 360�� in a horizontal plane, in which position said vertical section of said guide rib reaching up to said edge abuts said abutment cam, thereby preventing a further rotation of said self-opener sleeve. 8. The self-opener closure according to claim 6, wherein said edge sections of said cylinder wall sections, as seen from below into said threaded cap, ascend clockwise and are dimensioned, so that, upon screwing said threaded cap onto said pour-out spout, after its unscrewing for the initial time, slide twice over said inwardly projecting cams on said self-opener sleeve, thereby resulting in a downwardly push within said pour-out spout. 9. The self-opener closure according to claim 1, wherein each said combined piercing and cutting member on said self-opener sleeve is a piercing cutter projecting from said lower edge of said self-opener sleeve formed as an isosceles triangle with a tip projecting downwardly lying between two equal length limbs of said isosceles triangle, with free triangle sides facing in a circumferential direction and forming a sharp edge. 10. The self-opener closure according to claim 1, wherein an inner side of said self-opener sleeve is coated with a soluble substance. 11. The self-opener closure according to claim 1, wherein said rotary cap includes a metering spout. 12. The self-opener closure according to claim 1, wherein on said lower edge of said rotary cap a guarantee strip is integrally formed with a plurality of fine material bridges pushable over a bead which is circumferential on said pour-out spout below its outer thread and encloses said pour-out spout on a lower side of said bead. 13. The self-opener closure according to claim 1, wherein an outer circumferential side of said rotary cap forms a knurled, or grooved grip, surface, and an upper side of said rotary cap includes at least one diametrical groove or a diametrically upwardly projecting web.