Coil spring

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United States of America Patent

PATENT NO 10138970
APP PUB NO 20130099435A1
SERIAL NO

13807100

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A coil spring has an effective section that functions as a spring when a load in a coil axis direction has been applied, end turn sections that are formed on both ends of the effective section, and rising sections that are formed between the effective section and the end turn sections, wherein the rising sections are formed in such a way that, when θ1 represents the pitch angle of the rising sections and θ2 represents the pitch angle of the effective section, pitch angle θ1>pitch angle θ2 holds true in at least one of the rising sections.

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Patent Owner(s)

  • MITSUBISHI STEEL MFG. CO. LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ieiri, Satoshi Ichihara, JP 3 25
Matsuoto, Takayuki Ichihara, JP 1 11
Michibata, Kazuhisa Ichihara, JP 1 11
Yajima, Takashi Ichihara, JP 49 679

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