GAS VENTING/INTRODUCING STRUCTURE
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United States of America Patent
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Issued Date -
Apr 18, 2019
app pub date -
Mar 16, 2017
filing date -
Mar 30, 2016
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Abstract
A gas venting/introducing structure (1) including a body (2) and a porous portion (3) integrated with the body (2) having a plurality of gas venting/introducing paths (4) each in communication with the porous portion (3) at one end. The plurality of gas venting/introducing paths 4 are open to the outside of the body (2) at other ends thereof such that at least two gas venting/introducing paths (4) merge into a single path (5). The body (2) is made of a porous metal denser than the material of the porous portion (3). The gas venting/introducing paths (4) each has an inner wall (4a) defined by a smooth surface. The distance between a communication side (3a) of the porous portion (3) and an opposite side (3b) is on the order of 4 mm. A concavity is formed at the communication part between the gas venting/introducing paths (4) and the porous portion (3).
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