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 10315287
APP PUB NO 20170157744A1
SERIAL NO

15434519

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.

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Patent Owner(s)

  • NHK SPRING CO. LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiyama, Satoshi Fujisawa, JP 48 664
Komazaki, Masaya Yokohama, JP 9 28
Moriyama, Senri Yokohama, JP 10 11
Nagayasu, Go Yokohama, JP 8 17
Okada, Hideki Yokohama, JP 147 577
Yokota, Daisuke Yokosuka, JP 38 871

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