PNEUMATIC CYLINDER Russian patent published in 2003 - IPC

FIELD: performing rectilinear and reciprocating motion. SUBSTANCE: proposed pneumatic cylinder includes sleeve, piston dividing its interior forming rod chamber, rod, rear cover, front cover with bore where distance rubber ring is placed; said rubber ring presses L-shaped collar to surface of rod; collar has low coefficient of friction; bore made in front cover has form of truncated cone whose larger base adjoins rod chamber; L-shaped collar is in contact with larger base of truncated cone by its bearing part having radial passage; inner surface of sealing tab of collar has circular bore in zone of sealing edge. EFFECT: enhanced efficiency; increased service life. 3 dwg