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Push-on closure

A container and assembly technology, applied in the direction of capping, bottle/container cap, and capping the container tightly, which can solve the problems of peeling and stacking together

Inactive Publication Date: 2002-05-08
CLOSURES & PACKAGING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difficulty with this type of cap is that if there is longitudinal resistance to opening the cap, then the fine threads on the container and cap can peel off and pile together

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 The cap 10 according to the invention is shown on the neck 11 of the container 12 according to the invention.

[0026] Cap 10 includes a circular top 13 and a cylindrical skirt 14 . The protective identification strip 15 is connected to the lower edge of the skirt 14 by a plurality of frangible bridges 16 . The inner surface of the cap 10 is provided with sealing ribs 17 integrally formed with the top 13 of the cap 10 and having a generally cylindrical portion 18 spaced slightly inwardly from the skirt 14 therefrom. Although the cylindrical portion 18 is shown slightly inwardly of the skirt 14, it is readily conceivable that this portion could abut against or be integral with the skirt 14. The lower end of the cylindrical portion 18 is connected to a frusto-conical portion 19 . As shown in FIG. 4 , a sharp edge 20 is provided between the first cylindrical portion 18 and the second frusto-conical portion 19 . When the cap 10 is fitted to the container 12, th...

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PUM

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Abstract

A push-on closure (10) that can be pushed on to a container (12) and then screwed off. The container (12) has a neck (11) that is provided with a multi-start thread comprising alternating ridges (25) and grooves (26). The closure (10) includes a substantially circular top (13) and a depending skirt (14) with the skirt having a number of lugs (21) that are spaced apart circumferentially by distances corresponding to the spacing of the grooves (26) of the thread. When the closure (10) is attached to the neck (11) of the container (12), each of the lugs (21) engages with one of the recesses (27) formed in the neck (11). A ramp member (29) is also located adjacent each recess (27) so that upon relative rotation of the closure (10) at least some of the lugs (21) will bear against at least some of the ramp members (29) and be directed by the ramp members (29) into the grooves (26) in the thread to allow the closure (10) to be unscrewed from the neck (11) of the container (12).

Description

technical field [0001] The present invention relates to a cap for a container such as a bottle which can be pressed onto the container and then unscrewed. Background technique [0002] Known caps can be fitted on the neck of the container in a press-fit manner and can be unscrewed from the container, so-called press caps. This combination of container and cap generally depends on the use of very fine complementary threads on the container and cap. This cap is placed over the neck of the container and then pressed down onto the neck. When the cap is pressed against the neck, the two complementary threads straddle each other. To open the cap, the cap is rotated relative to the container so that the complementary threads engage each other and the cap is removed from the neck of the container. [0003] The advantage of this type of cap is that it does not require complicated capping fixtures. For general screw caps, when the cap is installed, the cap must...

Claims

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Application Information

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IPC IPC(8): B65D41/46B65D41/17B65D41/47
CPCB65D41/47B65D41/17
Inventor 罗德尼·M·德鲁伊特帕特里克·M·弗朗克莱夫·巴斯韦尔
Owner CLOSURES & PACKAGING SERVICE