Pneumatic cylinder with safety device
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United States of America Patent
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-
Feb 14, 2006
Grant Date -
Dec 9, 2004
app pub date -
May 12, 2004
filing date -
Jun 5, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pneumatic force-generating device, for example, a pneumatic cylinder for balancing the ram weight on a press, is provided with an impact or catching device having an impact plate (24) for catching the piston (18) upon discharge of the weight. The deformable impact plate (24) is securely clamped along its edge or held by a clamping device (31), that permits a controlled slipping through. The impacting piston (18) deforms the impact plate (24) to absorb the kinetic energy produced if this piston is released as a result of damage and is accelerated by the existing gas bolster and thrown against the impact plate (24).
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