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US Patent 7520661 Static mixer

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Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7520661
Date of Patent
April 21, 2009
Patent Application Number
11602168
Date Filed
November 20, 2006
Patent Citations Received
‌
US Patent 11925953 Foam generating device
0
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US Patent 11666874 Methods and apparatus for variable emulsification
0
Patent Primary Examiner
‌
Charles E. Cooley
Patent abstract

A multi-stage restrictor includes an inlet plate, plates also being known as circular wafers, having a central non-restrictive aperture, a top fluid manipulation plate, an inter link plate, a bottom fluid manipulation plate and an exit plate disposed in stacked relation. An elongate channel interconnects pairs of circular lobes in the top and bottom fluid manipulation plates. In a multi-stage restrictor, a taper between five to ten degrees is formed in each of the channels of the top and bottom fluid manipulation plates. In a pressure spike attenuator, the taper is about fifteen to thirty degrees. In a static mixer, chevron-shaped protuberances are added to the tapered channels, one protuberance on each side of the each channel and each channel has a protuberance at its opposite end.

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