View around flow indicator
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United States of America Patent
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-
Jul 22, 2008
Grant Date -
Sep 6, 2007
app pub date -
Mar 1, 2006
filing date -
Mar 1, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A view around flow indicator comprising a housing, a turbine wheel, a cylinder, and a visually perceptible pattern on the outside surface of the cylinder is disclosed. The housing has an inside surface defining a flow path. The inside surface of the housing forms a generally circumferentially extending annular recess. The turbine wheel comprises a hub positioned on the longitudinal axis, a ring positioned in the annular recess, a plurality of radially extending turbine blades connecting the hub with the ring, and plurality of magnets carried by the ring. The cylinder is mounted on an outside surface of the housing for rotation around the longitudinal axis of the flow path. The cylinder carries a plurality of magnets which are magnetically coupled to the plurality of magnets carried by the ring. The visually observable pattern on the outside surface of the cylinder permits rotation of the cylinder to be visually ascertained.
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