PISTON FOR BUFFER DEVICE AND BUFFER DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Mar 31, 2022
filing date -
Mar 31, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A piston includes a body of a cylindrical shape and a seat protruding axially from an axial end face of the body. The body includes first through-holes and second through-holes axially extending through the body. The seat allows a planar valve to be seated thereon and includes: bottom surfaces each including an opening for a through-hole formed at a position facing the corresponding first through-hole; a seating surface provided around each bottom surface so as to protrude from the bottom surface; and intermediate portions provided between the end face and the seating surface. The seating surface allows the valve to be seated thereon.
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