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Industrias Garriz SA
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Industrias Garriz SA
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Priority to ES1967134111UpriorityCriticalpatent/ES134111Y/en
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Publication of ES134111YpublicationCriticalpatent/ES134111Y/en
Improved folding ladder, characterized essentially because it comprises the arrangement of two metal reinforcements, linked by articulated means in its upper third prolonging one of the reinforcements superiorly and presenting in the area next to its terminal a slight bend of the closure an adjustable hook, existing at the point of connecting these reinforcements cover housings, being smaller and presenting in zone and in the upper section length the armature, folding, presenting this in its upper third a transverse tube on which tilts a platform corresponding to the upper step, while in the lower third it carries a reinforcing transverse tube, the legs being in both laterally oblique armatures and all of them presenting anti-slip lining tips. (Machine-translation by Google Translate, not legally binding)
A method for calculating the excitation potential, deflections of the vertical, and the stokes constants on the basis of molodenskii's integral equation for the excitation potential(Disturbing potential, vertical deflections and Stokes constants calculation method based on Molodenskii integral equation for excitation)