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SEVA CO
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SEVA CO
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Application filed by SEVA COfiledCriticalSEVA CO
Priority to ES1972177645UpriorityCriticalpatent/ES177645Y/en
Publication of ES177645UpublicationCriticalpatent/ES177645U/en
Application grantedgrantedCritical
Publication of ES177645YpublicationCriticalpatent/ES177645Y/en
Hand ladder, foldable, perfected, characterized by that each of the steps that are part of it, either of the simple or double, is constituted by two symmetrical, opposite and identical pieces that are joined by a third piece that it lodges inside the two previous ones, allowing its articulation; in addition, all of these rungs are joined by means of articulations to a central vertical bar, which will be at the bottom of these rungs, in addition, by means of a pin, with which, previously unblocked the corresponding cross of saint andrew that will be provided, and pulling from the aforementioned bar, in order to provoke its lifting, the rotation of the opposed hinged halves of the steps will be caused, until their superposition, with which the width of the stairway will be considerably reduced, until occupying a very small space. (Machine-translation by Google Translate, not legally binding)
ES1972177645U1972-02-251972-02-25
HAND LADDER, FOLDING, PERFECTED.
ExpiredES177645Y
(en)
A BALANCED FOLDING JOINT THAT EQUALS THE LOAD STRESS FOR DIFFERENT ANGLE OF ROTATION OF A LOAD BETWEEN A HORIZONTAL POSITION AND A VERTICAL POSITION, PARTICULARLY TO PIECES OF FURNITURE.