B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
B61C15/08—Preventing wheel slippage
B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
Nouveau principe d'elimination des depots accumules au niveau de la plaque tubulaire des generateurs de vapeur de centrales nucleaires a eau pressurisee
Perfectionnement aux systemes pour la realisation de coulees de beton arme au moyen de coffrages aptes a produire en place des murs a directrice droite ou courbe, vus en plan