Device for the damped transfer of the rotary motion in oval-wheel flowmeters

A stabilizing apparatus for use with an oval gear meter having one or more oval gears, the oval gear meter for receiving material such that a quantity of material is measured by the meter, such meter having the characteristic of alternating acceleration and deceleration for a constant flow of material passing through the meter due to the eccentricity associated with the elliptic shape of the oval gear thereby causing excessive instability or oscillatory conditions with respect to the measured material, the stabilizing apparatus comprising:

• (a) a first magnet having a toroid shape and operationally secured to and synchronized rotationally with an oval gear, said first magnet receiving rotational force from the oval gear representative of the quantity of material passing through the meter,
• (b) a second magnet having a toroid shape and operationally secured to and synchronized rotationally with a shaft, said second magnet disposed within said first magnet and rotationally driven by force received from said first magnet for transferring rotational force to the shaft,
• (c) a helical spring for dampingly connecting said second magnet and the shaft such that the alternating acceleration and deceleration due to the eccentricity associated with the elliptic shape of the oval gear is smoothed to prevent excessive correction, instability or oscillatory conditions in the measured material.

A stabilizing apparatus for use with an oval gear meter having one or more oval gears, the oval gear meter for receiving material such that a quantity of material is measured by the meter, such meter having the characteristic of alternating acceleration and deceleration for a constant flow of material passing through the meter due to eccentricity associated with the elliptic shape of the oval gear thereby causing excessive instability or oscillatory conditions with respect to the measured material, the stabilizing apparatus comprising:

• (a) a first magnet having a toroid shape and operationally secured to and synchronized rotationally with an oval gear, said first magnet receiving rotational force from the oval gear representative of the quantity of material passing through the meter,
• (b) a second magnet having a toroid shape and operationally secured to and synchronized rotationally with a shaft, said second magnet disposed within said first magnet and rotationally driven by force received from said first magnet for transferring rotational force to the shaft,
• (c) a helical spring for dampingly connecting said first magnet and the oval gear such that the alternating acceleration and deceleration due to the eccentricity associated with the elliptic shape of the oval gear is smoothed to prevent excessive correction instability or oscillatory conditions in the measured material.