Cushion device for cylinder of pneumatic tool
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United States of America Patent
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Jul 2, 2019
Grant Date -
Apr 20, 2017
app pub date -
Dec 27, 2016
filing date -
Mar 24, 2015
priority date (Note) -
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Abstract
A cushion device is used for a cylinder of a pneumatic tool, and the pneumatic tool contains: a body, a cylinder, a valve unit, a piston member, a cushion washer, and at least one spring. The body includes a grip and a fitting sleeve having a chamber, a closing element, and an opening. The cylinder is fitted in the chamber and includes a room and an abutting portion. The valve unit is mounted between the room and the abutting portion. The piston member is accommodated in the room and slides along a movement axis. The cushion washer and the at least one spring are mounted in the chamber, and the cushion washer abuts against the closing element and the pressing face. The cushion washer includes at least one open segment which has at least one air groove each having a mouth parallel to the movement axis.
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