HYDRO(PNEUMATIC)CYLINDER Russian patent published in 2019 - IPC F15B15/14 

FIELD: hydraulic displacement machines; pumps and compressors.

SUBSTANCE: present invention relates to a hydro(pneumatic)cylinder. Hydro(pneumatic)cylinder (10) is designed so that piston unit (18) is placed inside cylinder body (12) with a rectangular cross-sectional shape with the possibility of free movement in the axial direction. Piston unit (18) has: base body (50) having front end (86) of piston rod (20) staked thereto; wear ring (52) having base body (50) received therein and having magnet (70) incorporated therein; and piston packing (54) adjacent to wear ring (52). Piston unit (18) is integrally held at one end of piston rod (20). Wear ring (52) and piston packing (54) are formed in a rectangular cross-sectional shape corresponding to rectangular cross-sectional shape of cylinder body (12) and are provided freely rotatable relative to piston rod (20).

EFFECT: technical result is reduction in size in the longitudinal direction.

12 cl, 18 dwg