| 摘要 |
<p>A gas spring for providing a smooth and generally gradual load distribution between interrelated parts of a press has a casing (16) defining at least in part a gas chamber. A housing (18) is received at least in part in the casing. The housing has a through bore sized for receipt of the piston rod therein for reciprocation between extended and retracted positions. A piston retainer (54) is attached for conjoint movement with the piston rod. An end of the housing flexes between a compressed position when the piston retainer abuts the housing as the piston rod moves toward its extended position and an uncompressed position when the piston retainer moves toward its retracted position and out of engagement with the housing.</p> |
