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Priority to ES0165578UpriorityCriticalpatent/ES165578U/en
Publication of ES165578UpublicationCriticalpatent/ES165578U/en
Investigating Strength Of Materials By Application Of Mechanical Stress
(AREA)
Abstract
Improved expander, of the type that is constituted by a helically bent flexible wire with tubular formation, of suitable length to the development of a determined diameter, essentially characterized in that the element of assembly between testas to form a ring, is constituted by a cylindrical pin of diameter equal to the inside of the helicoid bent in concentric arc to the ring that is intended to form with said helicoid, whose pin has an extreme width similar to the useful pitch between coils, being threaded between them, anchoring immovably, while the free end fits on the opposite side with the possibility of sliding, and characterized in that the ends of said helicoid are facing so that they form stop planes that centered by the pin, when facing keep the elastic load homogeneous at any point of the ring formed. (Machine-translation by Google Translate, not legally binding)
ES0165578U1971-01-271971-01-27Improved expander (Machine-translation by Google Translate, not legally binding)
PendingES165578U
(en)