ROD-PISTON UNIT Russian patent published in 2006 - IPC F16J1/22 

FIELD: engine engineering.

SUBSTANCE: rod-piston unit comprises piston whose inner side of the bottom is provided with the central boss, ball around which the rod is rocking, and top and bottom heads. The top head is provided with inner semi-spherical surface whose center lies at the longitudinal axis of the rod from the side of the piston and two tabs. The boss is provided with the semi-spherical surface whose center is located at the axis of the piston from the side of the rod, and its face is provided with two dummy threaded openings arranged symmetrically from both side of the spherical surface. The surfaces of the tabs face the bottom head and are cylindrical. The side of the top head facing the piston is composed of two planes arranged at an inclination to each other. Each tab is provided with through groove for passing the fastening member. The cylindrical surface of each tab is provided with the bearing having central through opening for passing the fastening member. The fastening members are made of studs screwed into the dummy openings in the boss face. The spherical nuts are screwed on the free threaded ends of the studs.

EFFECT: simplified structure and enhanced reliability.

2 cl, 3 dwg