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D'ETUDES FERROVIAIRES Ste
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D'ETUDES FERROVIAIRES Ste
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Application filed by D'ETUDES FERROVIAIRES StefiledCriticalD'ETUDES FERROVIAIRES Ste
Priority to ES1971166202UpriorityCriticalpatent/ES166202Y/es
Publication of ES166202UpublicationCriticalpatent/ES166202U/es
Application grantedgrantedCritical
Publication of ES166202YpublicationCriticalpatent/ES166202Y/es
Perno de fijación; caracterizándose siguiente: por lo prevista en una placa, perfil o análogo entre le cabeza que presenta al menos un resalto de dos superficies de tope contra las caras longitudinales, opuestas de la ranura, siendo estas superficies aproximadamente planas y paralelas al eje del perno, y forman entre si un diedro de ángulo de 90Q aproximadamente, comprendiendo el resto de la ante-cabeza del eje longitudinal del perno a lo sumo igual a la semianchura de la cabeza martillo.
ES1971166202U1971-02-171971-02-17Perno de fijacion.
ExpiredES166202Y
(es)
Considerations on the centers of shear and of twist in the theory of beams(Centers of shear and twist in theory of beams and application to problems of torsion and flexure)
Study of the possibility of decreasing the rate of fatigue crack propagation in duraluminum sheets by means of cold working(Cold working considered for decreasing fatigue crack propagation rate in thin duraluminum sheets with various plastic deformations)