PISTON FOR PISTON MACHINE Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: space, which is restricted within inner space 7 by partially spherical head 5 of rod 6, is filled with viscose or pasty or plastically deformed liquid 13 which is practically incompressible at working temperature and pressure of piston 1. Diameter of cylindric bearing surface 8, which restricts the inner space from the side, slightly exceeds diameter of the partially spherical head of rod 6 so that working clearance between the bearing surface 8 and head 5 is small enough for preventing any by-passing of liquid 13 out of the space at working temperature and pressure of the pistons. EFFECT: improved design. 20 cl, 15 dwg