Thread plug gauge with maintenance line, thread ring gauge, and method of manufacturing the same
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United States of America Patent
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Dec 4, 2018
Grant Date -
Apr 14, 2016
app pub date -
Dec 17, 2015
filing date -
Apr 3, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A thread gauge, which allows to reliably know the time for replacement by visual checking and improves the predetermined dimensional accuracy of a thread product has a go-side thread measuring portion extending from one side of a shank portion coaxially with the shank portion or a not-go-side thread measuring portion extending from an other side of the shank portion coaxially with the shank portion, a wear checking gauge line having a predetermined length and a predetermined depth formed on male thread portions and female thread portions formed on the go-side thread measuring portion or the not-go-side thread measuring portion.
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