FRICTION ITEM Russian patent published in 2012 - IPC F16D65/92 F16D69/00 

FIELD: machine building.

SUBSTANCE: friction item includes friction pad fixed on metal frame and including working and side surfaces. Working surface and some part of side surface of pad, which is not orthogonal to working surface, includes grooves. Grooves of working surface of friction pad have similar depth and are made along the parts of arcs of coaxial circles, which are coaxial to friction force arc axis, and grooves of some part of side pad surface are made along straight lines which are not radial to friction force arc of friction pad.

EFFECT: uniform distribution of surface stresses along the contact area of friction pad with counter-body and their compensation, which leads to reduction of possible stress concentration in individual sections of the item surface, and to reduction of possible destruction during operation of individual sections of friction pad.

2 dwg