Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 24, 2010
Patent Application Number
11697149
Date Filed
April 5, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A flow metering device and method for monitoring flow of a liquid, has a body with an inlet port and an outlet port. A flow chamber is formed therein between a pair of laterally placed windows in the flow chamber. A light emitting source placed in one of the windows and a light receiver placed in a second of the windows. The flow chamber has a flow restricting and light stopping element held therein and movable between a rest position and an operating position.
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