Screw device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11525498
APP PUB NO 20210277984A1
SERIAL NO

17258232

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A screw device is provided which can detect damage to a groove of a screw shaft, the damage being hidden by a nut, with a high probability. At least two circulation components are mounted on a nut in such a manner as to form at least two circulation circuits that circulate rolling elements. The nut is provided with a sensor that detects a displacement of a groove of a screw shaft between the adjacent circulation circuits.

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Patent Owner(s)

  • THK CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miura, Tetsuya Tokyo, JP 34 662
Mochizuki, Kazuyoshi Tokyo, JP 2 27
Muramatsu, Ryuji Tokyo, JP 1 2
Todoroki, Yusuke Tokyo, JP 14 18

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