Gas cylinder actuator with overtravel safety device
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United States of America Patent
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Mar 22, 2016
Issued Date -
N/A
app pub date -
Mar 1, 2013
filing date -
Mar 1, 2012
priority date (Note) -
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Abstract
A gas cylinder actuator having an overtravel safety device includes a tubular jacket for gas containment, which is closed at one end by a bottom provided with a gas filling valve and at the opposite end by a head portion. The head portion is provided with a hole for the passage of a stem with a piston, the jacket, the bottom and the piston forming the gas expansion and compression chamber. The head portion further includes an annular body, which is fixed internally to the jacket, and is provided with a central hole for the passage of the stem with the interposition of sealing elements, static sealing elements being interposed between the annular body and the jacket and an element for controlling the descending motion of a slider of a press with which the actuator is associated being provided and protruding from the annular body or from the jacket.
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