Screw shaft and method for manufacturing same, and electric position adjusting device for steering wheel and method for manufacturing same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12043302
APP PUB NO 20210309278A1
SERIAL NO

17267266

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A screw shaft includes a large-diameter shaft portion having a male-side screw portion over the entire length of the outer circumferential surface thereof; a first small-diameter shaft portion arranged adjacent to one side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof; and a second small-diameter shaft portion arranged adjacent to the other side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof.

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Patent Owner(s)

Patent OwnerAddress
NSK LTD6-3 OSAKI 1-CHOME SHINAGAWA-KU TOKYO 141-8560

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Saito, Takeshi Maebashi, JP 413 6864

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