TRIPOD HEAD Russian patent published in 1995 - IPC

FIELD: photography. SUBSTANCE: case 1 of ball-shaped head is made in form of a brace with threaded hole 7 in inclined surface 9 onto internal side of case wall. Axis of threaded hole 7 is perpendicular to inclined surface 9. Hardness of material, from which hard edges 8 of hole 7 are made, excesses over hardness of ball 3 of ball support. Material of which ball 3 is made, is in contact with sharp edges 8 of hole 7. EFFECT: improved efficiency of operation. 3 dwg