DEFORMED BAR Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: deformed bar has longitudinal projections 1 and longitudinal rows of inclined projections 2 and 3 located along bar between longitudinal projections 1. Longitudinal projections 1 are disposed at angle of 120 deg. relative to each other in bar cross- section. Inclined protrusions 2 of two longitudinal rows are spaced at same pitch and same angle of inclination. Inclined projections 3 of third longitudinal row are spaced with pitch twice as large as that of projections of the first two rows, and with angle of inclination different from inclination angle of projections of the first two rows. Projections 3 are inclined in opposite direction with respect of projections 2. EFFECT: higher efficiency. 6 dwg