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Individual
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Individual
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Priority to ES1981257439UpriorityCriticalpatent/ES257439Y/en
Publication of ES257439UpublicationCriticalpatent/ES257439U/en
Application grantedgrantedCritical
Publication of ES257439YpublicationCriticalpatent/ES257439Y/en
Improved security closure, characterized in that by means of two disks mounted and joined by a common axis, which is in its geometric center, allowing them the possibility of turning each other, the joining and crimping of the ends of a chain is possible, for which, one of the discs has a perforated extension or ear on which the link of one of the ends of the chain is fixed, also having on its surface a circular sectorial groove, which communicates at one of its ends with the outside and that defines, an arm or peripheral hook by which the last link is inserted that corresponds to the extreme eye of the chain, being blocked its possibility of accidental extraction, by means of the outline of the second disc, which allows the comfortable situation and introduction of the end link, thanks to a peripheral recess that, with depth greater than the width of the arm or peripheral hook, allows the situation stable connection of said link in the end part of the peripheral arm and allowing the disengagement thereof, by inverse rotation of the constituent discs until the recess of the closing disc coincides with the opening of the notch communicating with the outside. (Machine-translation by Google Translate, not legally binding)