Measurement tool for circumference

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United States of America Patent

PATENT NO 10228230
APP PUB NO 20180188012A1
SERIAL NO

15449400

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Importance

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Abstract

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A measurement tool for circumference includes at least one disk with a circumference thereof provided with a through hole; a straightedge provided with a fixed post and a plurality of scales, and the fixed post penetrates through the through hole to fix the disk to the fixed post; and a hitching line with one end thereof penetrated by the fixed post, and the other end of the hitching line surrounds the disk or straightens along the straightedge. Thus, a string makes a circle around the circumference, whereby the string is marked an index corresponding to the fixed post, and then the string straightens along the straightedge, and a length of the circumference of the disk is obtained according to relative positions of the scales and the index.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL TAIWAN NORMAL UNIVERSITYNO 162 SEC 1 HEPING E RD DA’AN DIST TAIPEI CITY 10610

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Jung-Hsuan Taipei, TW 48 122
Kuo, Chin-Guo Taipei, TW 11 11
Shu, Chao-Fu Taipei, TW 13 16

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