Pressure fluid cylinder with optional anti-rotation feature
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United States of America Patent
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Oct 28, 2003
Grant Date -
Nov 7, 2002
app pub date -
Apr 24, 2002
filing date -
Apr 24, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pressure fluid cylinder with anti-rotation feature, includes a cylinder tube of non-circular inner cross section and a piston which is sealingly received in the tube. The piston has a circular cross section and is connected at one end to a piston rod in coaxial relationship. In order to allow selective use of the pressure fluid cylinder with or without anti-rotation feature, an annular adapter is placed between the piston and the tube and has a circular inner surface area to complement a circular outer surface area of the piston so as to allow a relative rotation between the piston and the adapter. The adapter has a non-circular outer surface area to complement the non-circular inner surface area of the tube. Through insertion of a fastener in aligned boreholes of the adapter and the piston, the adapter and the piston are prevented from rotating relative to one another.
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