Gas spring device
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United States of America Patent
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-
Mar 18, 2003
Grant Date -
Nov 7, 2002
app pub date -
May 7, 2001
filing date -
May 7, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a speed reducing device of a gas spring device. The piston is slidably moved in the cylinder in the state the piston is adhered to the inner wall surface of the cylinder, and a cutting recess is formed on the outer peripheral surface of the cylinder to easily move the gas in first and second chambers. A concentric gas passage is formed on the surface of the piston which makes contact with the upper washer, and includes another concentric gas passage. An inlet and outlet of the gas passage is opened towards the outer peripheral surface of the piston. A concentric gas passage is formed on the surface of the piston which makes contact with the under washer. The inlet and outlet of the gas passages is opened towards the bottom surface of an annular recess. The gas passage is connected by an axial recess which penetrates the piston.
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