Drain Plug and Manufacturing Method Thereof
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United States of America Patent
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Issued Date -
Mar 15, 2018
app pub date -
Sep 6, 2017
filing date -
Sep 13, 2016
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Abstract
A drain plug includes a main body which has an entirely threaded region and a partially threaded region. An outer circumferential surface of the main body has an external thread, and at least one cutout. Thus, the entirely threaded region is formed on a base end side of the main body. The cutout includes a first part extending from the leading end of the main body in the axial direction of the main body, and a second part extending from the first part in a direction toward the base end of the main body. The second part has an inclined surface, and the inclined surface is connected to the entirely threaded region.
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