Rolled thread screw and rolled thread screw manufacturing method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12152624
APP PUB NO 20220341456A1
SERIAL NO

17641245

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A rolled thread screw includes: a screw part having, on an outer circumferential part of the screw part, thread crests and thread grooves disposed alternately along an axial direction of the rolled thread screw; and a columnar part adjoining at least one of both sides of the screw part in the axial direction. An axial end surface of the columnar part is provided with: a first concave surface concave in the axial direction; a second concave surface positioned to an outer circumference of the first concave surface and being concave in the axial direction; and a salient part positioned on a boundary between the first concave surface and the second concave surface and projecting further than a bottom of the first concave surface and a bottom of the second concave surface, the salient part extending in an arc-like shape along a circumferential direction of the columnar part as viewed in the axial direction.

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Patent Owner(s)

Patent OwnerAddress
NSK LTD6-3 OHSAKI 1-CHOME SHINAGAWA-KU TOKYO 1418560 ?1418560

International Classification(s)

Inventor(s)

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

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