ES295181A3 - Improvements in the construction of industrial chairs (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the construction of industrial chairs, characterized by the fact that the chair is constituted by a tubular support frame based on four supports distributed at right angles, which start from a central position and extend radially according to a double layered, offering successively some vertical, horizontal and vertical portions, the upper ends of such supports being joined together with a horizontal plate in the upper part of which is attached a tubular support in which a central rod penetrates, with a conical lateral ramp for the application of the end of an adjustable screw mounted on the support, so that this rod is inserted in a tubular body, with freedom of rotation, attached to a base plate of the seat of the chair, in whose plate the ends of a fork supporting the backrest are housed, with faculty. Longitudinal sliding to adjust the distance of that, by means of adjustable pressure torillo, being articulated the backrest to the fork, for the purpose of adjusting the height of that, by means of a sliding rear plate in the branches of the latter, with adjustable fixing by means of pressure screw, whose fork is suitable for enteroposterior and lateral flexions according to the positions communicated by the back of the user of the chair, being applied a tubular ring for rest of the feet, integral to each of the supports of the frame supporting, in their respective horizontal portions, all in such a way that the height adjustment of the seat of the chair is achieved through the aforementioned conical ramp of the central stem, which, in collaboration with the screw in it applied at the desired depth , determines the blocking of the penetration of the rod itself and, therefore, the fixing of the chosen height. (Machine-translation by Google Translate, not legally binding)