Vertical motion impeller-type shot peening device and coil spring

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10836013
APP PUB NO 20190232462A1
SERIAL NO

16383231

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A coil spring includes a helically formed wire having end turn portions at ends thereof, a plurality of first rough surfaces, each including first shot peening indentations formed on a part of a surface of the end turn portions, and a second rough surface including second shot peening indentations formed on the entire surface of the wire except for the first rough surface. The second rough surface has a surface roughness different from that of the first rough surface.

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Patent Owner(s)

Patent OwnerAddress
NHK SPRING CO LTDYOKOHAMA-SHI KANAGAWA 236-0004

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiyama, Satoshi Fujisawa, JP 51 684
Komazaki, Masaya Yokohama, JP 9 35
Moriyama, Senri Yokohama, JP 10 16
Nagayasu, Go Yokohama, JP 8 24
Okada, Hideki Yokohama, JP 148 614
Yokota, Daisuke Yokosuka, JP 39 1071

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