Method of making a fluid coupling
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United States of America Patent
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Sep 4, 2012
Issued Date -
N/A
app pub date -
Jun 26, 2008
filing date -
Nov 28, 2002
priority date (Note) -
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Abstract
Each of ridges 7 on respective opposite side surfaces of a gasket 4 has a trapezoidal cross sectional shape defined by an outer tapered face 7a providing an outer peripheral surface, an inner tapered face 7b providing an inner peripheral surface and a flat face 7c providing a top end surface. The hardness of the gasket 4, the angle between the tapered faces 7a, 7b of the ridge 7, the height of the ridge 7 and the area of the flat top end face 7c of the ridge are so determined that the value of thrust for tightening up the coupling is between a predetermined minimum value and a predetermined maximum value.
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