Screw-on closing cap for containers and a container provided with said cap

Abstract

The present invention relates to a closing cap for containers that have a neck provided with a threaded portion, comprising a lower ring that can be coupled to the neck of the container and an upper cap ( 2 ) having a thread configured to be coupled to the outer threaded portion of the neck, the upper cap ( 2 ) and the lower ring ( 1 ) being integrally joined together. The upper cap ( 2 ) and the lower ring ( 1 ) are joined by means of two flexible extensions ( 3 ) diametrically opposed to each other, each one formed by a thickening in the lower ring that includes a grooved portion ( 7 ), such that the two extensions have the same outer diameter as the outer diameter of the thickening, the lower edge of the body of the upper cap having a step where the extensions are located, such that in a closed condition both extensions ( 3 ) are arranged above and parallel to the body of the lower ring ( 1 ). Openings in the lower ring ( 1 ) are provided running parallel to the lower edge of the lower ring ( 1 ), arranged radially and at least partially underlying the grooved portion ( 7 ).

1 . A screw-on closing cap for containers, in particular caps intended for containers that have an opening in a neck provided with an outer threaded portion, comprising a lower ring configured to be coupled to the neck of the container and an upper cap having on the inner face thereof a thread configured to be coupled to the outer threaded portion of a container neck, the upper cap and the lower ring being joined together in such a way that they are able to rotate integrally with each other, joining the upper cap and the lower ring by means of two extensions with a certain degree of flexibility that are diametrically opposed to each other, each one formed by a thickening in the lower ring that includes a grooved portion such that the extensions are formed above the grooved portion, in such a way that the two extensions have the same outer diameter as the outer diameter of the thickening, the lower edge of the body of the upper cap having a step that defines a recessed portion in which the extensions are located, such that in a closed condition the two extensions are arranged above and parallel to the body of the lower ring, while in an open position of the closing cap, the upper end of the extensions acts as a hinge region in such a way that the upper cap is able to rotate, in that linear openings in the lower ring are provided running parallel to the lower edge of said lower ring and the linear openings are arranged radially and at least partially underlying the grooved portion and spaced apart from each other, and in that it includes stop means intended to fixedly hold the upper cap in an inverted position with respect to the arrangement taken on by the upper cap during the closed position wherein the stop means comprise a projection that protrudes from the lower ring, which is aligned in height with a tab that protrudes laterally from the lower edge of the upper cap, such that, in an open condition, the tab abuts an upper surface of the projection, in which the tab has a curved path adaptable to the radius of curvature of the lower ring. 
     
     
         2 - 3 . (canceled) 
     
     
         4 . The screw-on closing cap for containers according to  claim 1 , wherein the inside of the lower ring includes retaining means intended to act on a perimeter projection present on a container neck, said retaining means being present along the inner diameter of the body of the lower ring. 
     
     
         5 . The screw-on closing cap for containers according to  claim 4 , wherein the retaining means comprise a plurality of protuberances aligned and equidistant from each other, which run parallel to the lower edge of the upper cap. 
     
     
         6 . The screw-on closing cap for containers according to  claim 1 , wherein in that the linear openings include second tamper-evident seals. 
     
     
         7 . The screw-on closing cap for containers according to  claim 6 , wherein the second tamper-evident seals consist of breaking bridges located between the upper edge and lower edge of said openings. 
     
     
         8 . The screw-on closing cap for containers according to  claim 1 , wherein the linear openings are located in a lower edge of the lower ring, such that they are open at the bottom. 
     
     
         9 . The screw-on closing cap according to  claim 1 , wherein it is made of a single piece of injection mouldable or compression moulded plastic material. 
     
     
         10 . A beverage container, comprising a bottle-shaped body that includes a threaded neck at the top, wherein in that it includes a screw-on closing cap according to  claim 1  coupled to the threaded neck.