Patent ID: 6298628
Filing Date: 2001-10-09
Classification: E04B

Abstract:
A block, which, by layer-building with a plurality thereof, forms walls of houses or buildings, said block comprising:hook-shaped joints established at both ends of said block;a linking protrusion which has a protruding step that is formed on the top of the block and extends towards both ends thereof;a linking groove which is established on the bottom face of the block and which links with the linking protrusion of another block positioned therebelow;a first slanting surface positioned in the top of the linking protrusion to the right of the approximate center of said block, which is slanted away from one side and toward the other side; anda second slanting surface positioned in the top of the linking protrusion to the left of the approximate center of said block, which is slanted toward the aforesaid one side of the block and away from the aforesaid other side;wherein a flat surface that is higher than each of the slanting surfaces is established in both ends of the aforesaid linking protrusion.