ÜCÍÁ 29, 1946~ c. J. DuMAls v ARMOR 2,410,022 . ' Filed Aug. s, 1942 Inventor ¿'À/œrles «Ése/vk Jamais By @Mm WWW# Patented Oct. 29, 1946 i 2,410,022 UNITED STATES PATENT OFFICE 2,410,022 ' ~ ARMOR Charles Joseph Dumais, Woonsocket, R. I. Application August 5, 1942, Serial No. 453,744 1 Claim. 1 This invention relates to new and useful im provements in armored vehicles and more partic ularly to an armored ñghting tank especially adapted for use in warfare. These and other important objects and advan tages `of the invention wil1 become apparent to (Cl. 109-83) 2 spaces. Thus a highly resistant shell structure is >provided for tanks which will not only conserve steel but offer a highly eiîective barrier against gun iire. While the foregoing specification sets forth `the invention in speciñc terms, it is to be understood that numerous changes in the shape, size and In the drawing materials may be resorted to without departing Figure 1 is a fragmentary side elevational view from the spirit and scopeof the invention Ias of the Wall plates of .theI tank before the aggre 10 claimed hereinafter. gate has been poured. ` the reader of lthe following description. g Having described the invention, what is claimed Figure 2 is a fragmentary Vertical sectional as new is: view through a wall portion of the tank showing In an armored -tank structure, a body compris the concrete filler. _ing an outside wall, an inside wall, a plane sur The body or shell of the tank, not shown, com 15 faced intermedi-ate wall interposed between the prises an outside wall a, an inside wall b, and an inner and outer walls and in equidist-antly spaced intermediate wall c, these walls being in spaced relation therewith, and a concretious deposit in relation. The intermediate wall c is formed with the spaces between .the walls, said intermediate openings and a concretious aggregate is poured in the spaces between the walls, with the open 20 wall being formed with openings so that the con cretious deposit can connect between the spaces ings serving to allow some of this aggregate to betere hardening. » form binding connections between the wall Y CHARLES JOSEPH DUMAIS.