Gas spring with safety cut=out action to release excess pressure - has seal pressed under excess pressure into recess on piston rod guide to produce local unsealed area.

摘要

The recess (8) is on the side of the piston rod guide (7') facing the seal (4') and can be formed by radial slits round the outer circumference. A reinforcement disc (10) set axially between the seal and guide can have slits corresponding to the guide. The piston rod guide can have an area axially displaceable in the event of excess pressure so that the seal presses on this area and produces the local unsealed area. USE/ADVANTAGE - Gas spring safety measure avoids structural alteration of cylinder.