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LAMUELA MONTON FRANCISCO
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LAMUELA MONTON FRANCISCO
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Application filed by LAMUELA MONTON FRANCISCOfiledCriticalLAMUELA MONTON FRANCISCO
Priority to ES77096UpriorityCriticalpatent/ES77096Y/en
Publication of ES77096UpublicationCriticalpatent/ES77096U/en
Application grantedgrantedCritical
Publication of ES77096YpublicationCriticalpatent/ES77096Y/en
An improved turning device, essentially characterized in that the solidly joined ends of the upper and lower sections have, in their inner part and in a diametrically opposed position, two circular recesses, the separation of which is regular in all its points and on which it is conditioned. a suitable set of steel balls, to form the friction bearing, the spherical bodies being limited in the concave recesses, being by this arrangement both sections capable of turning in both directions, the upper part has at its lower edge a surrounding area of the projection corresponding to the upper end of the lower part, this last section having, below the ball assembly, a peripheral groove, on which an elastic washer is fixed to regulate the rotation of the upper part, whose bore can be smooth or threaded helically to receive the adjustment element permanently adapted. (Machine-translation by Google Translate, not legally binding)
Improvements in the graduable or fixed lifting and lifting mechanisms for armchairs and analogs (Machine-translation by Google Translate, not legally binding)