Pipe switch with spherical plug
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United States of America Patent
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-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Aug 13, 1998
filing date -
Aug 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe switch includes a plug with a spherically arched circumferential surface and having ports for at least one channel. The plug is rotatably supported in a housing about a pivot axis which is formed with an inlet port and two outlet ports. In order to simplify the shape of the housing and reduce the complexity of manufacture, the plug is a spherical segment within a spherical volume bounded by the great circle, with the ports of the channel being bounded at least approximately by substantially coincidental ellipses in the spherical segment of the plug in a projection along an imaginary line connecting the centers of the ports, whereby this imaginary line extends offset with respect to the pivot axis of the plug.
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