Patent ID: 11448540

Abstract:
A flow meter, includes a casing, having a central cavity flow communication with an inlet and an outlet conduit; first and second toothed intermeshing oval gears, respectively rotatably supported in the central cavity via a primary support shaft and a secondary support shaft. The first oval gear has an upper surface provided with a protrusion and a magnet, with at least a portion of the magnet arranged within said protrusion, said magnet centered with respect to an axis of rotation of the first gear, and rotating concentrically with respect to the axis of rotation of the first gear; The flowmeter further includes a top cap having an interior cavity; in which a sensor is arranged, so that when the cap is placed on the casing of the flowmeter, the sensor or encoder is situated above the magnet of the first gear. The cap has a bottom surface with a zone of reduced thickness defining a lower recess arranged below the inner cavity of the cap, so that the projection of the first gear is received in the lower recess, so as to aligning and bring the magnet in close proximity with the sensor or encoder thereby avoiding pressure flexing.