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Priority to ES1970162824UpriorityCriticalpatent/ES162824Y/en
Publication of ES162824UpublicationCriticalpatent/ES162824U/en
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Publication of ES162824YpublicationCriticalpatent/ES162824Y/en
Quick coupling device especially suitable for linking to fabrics or similar lined buttons, characterized by incorporating to the two pieces that conventionally structure the armor of said buttons, a third element, consisting of a laminar head, in the form of a spherical cap, which, centered, by its concave face, projects two rectilinear sectors, parallel to each other and slightly flattened in the sense of their reciprocal confrontation; which element is arranged so that its head lodges itself, tightly, in the cavity that will define the adaptation of the two pieces that make up the armor of the button, leaving the rectilinear sectors attached to said head located outside the set, after transferring the corresponding holes presented by one of those reinforcements for the conventional passage of the sewing thread; the functionalism of the proposed system being characterized by the fact that the passage of the rectilinear sectors through the cloth or the like and its divergent despondency on it, determine the rapid linkage of the button to it. (Machine-translation by Google Translate, not legally binding)
Interaction of critical pressures and critical concentrated loads acting on shallow spherical shells(Critical combinations of uniform pressures and concentrated loads at apex acting on shallow spherical shells determined, deriving basic differential equation)
Improvements in the means of linking between the machinery of a clock and the support of its sphere. (Machine-translation by Google Translate, not legally binding)