BRICK Russian patent published in 2009 - IPC E04C1/00 

FIELD: construction.

SUBSTANCE: invention relates to construction, mainly to brick production technologies and may be used for the brick development and production and for construction of different brick buildings. The brick contains through hollows between opposite surfaces and, at least one hollow orifice area is made variable along the hollow length. The above hollow includes, at least, two sections where hollow orifice area decreases to the minimum value of the orifice size at this section, and increases to the maximum value of the hollow orifice at this section.

EFFECT: improved brick heat exchange with the environment during drying, annealing and cooling.

8 cl, 1 ex, 1 tbl, 21 dwg