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Individual
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Individual
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Priority to ES0081857UpriorityCriticalpatent/ES81857Y/en
Publication of ES81857UpublicationCriticalpatent/ES81857U/en
Application grantedgrantedCritical
Publication of ES81857YpublicationCriticalpatent/ES81857Y/en
New stopper, characterized in that its central cylindrical body is composed of an elastic tube, comprised by its ends between a lower disk with a central tube, with interposition of a washer, and an upper ring, in whose central orifice there are two helicoidal ramps. , housing in this hole a head with means to manually drive it to rotate, whose head has in the body of its base other two helical ramps, which act by friction on the first mentioned, in such a way that when turning the head and sliding the ramps of this, on those of the ring, said head pulls the central stem of which it is integral, which, being threaded to the central tubular body of the lower disc, also pulls this and when the lower disc approaches the upper ring, they compress between both to the flexible tube, forcing it to curl its walls as, with it, increase the diameter of the cylindrical body of the plug to adjust to pres ion in the walls of the mouth of the container to which it will close hermetically. (Machine-translation by Google Translate, not legally binding)