DRILLING MACHINE STRIKER Russian patent published in 1999 - IPC

FIELD: strikers used in mechanisms of shock, shock-turning, shock- rotary action for generation of elastic compression waves in waveguides. SUBSTANCE: in striker, comprising the generating part with a generating peripheral surface restricted by receiving and convex striking end faces, the latter is made in the form of a surface formed by rotation about the striker longitudinal axis of a flat curve being part of the elliptic Booth's lemniscate with relation of coefficients a/b=0.7...0.8, where a and b - coefficients of elliptic Booth's lemniscate. EFFECT: enhanced durability of encountering surfaces, enhanced efficiency of transmission of kinetic energy of striker pin to waveguide. 2 dwg