G - Physics – 01 – F
Patent
G - Physics
01
F
73/3
G01F 1/28 (2006.01)
Patent
CA 1322464
TARGET FLUID FLOW INDICATOR GAUGE Abstract of the Disclosure A target fluid flow indicator gauge comprising a non-magnetic housing defining a target chamber having a rounded portion that is curvilinear about an axial center that is coaxial with a fluid flow central axis through the gauge, with the chamber rounded portion lying in a plane that extends normally of such axial centers, a leaf spring mounted in the housing chamber and adjacent one end of the spring, which leaf spring at the other end of same has fixed to a rigid lever arm that extends diametrically across the target chamber portion and mounts a disc-like target in centered relation within the chamber portion in coplanar, close fitting relation, thereto, with the housing further defining inflow and outflow fluid ports on opposite sides of and centered on the axial centers and on the target for directing fluid flow against the target and out of the chamber in a predetermined fluid flow direction through the housing; the lever arm carries a driving magnet assembly adjacent the target that is immersed in the fluid being flow measured, and that is magnetically coupled through an imperforate wall structure of the housing to an externally located follower magnet assembly that acts through a short lever arm to pivot an indicator pointer that is journalled to pivot about an axis that extends crosswise of the fluid flow direction, to provide an output with reference to a scale on the face of the gauge that is linear over the range of the gauge, with the leaf spring being adjustable to accommodate variant ranges of fluid flow rates.
571281
Dwyer Instruments Inc.
Macrae & Co.
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