Self-centering magnet assembly for use in a linear travel measurement device
First Claim
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1. A pressure regulator comprising:
- a main housing having an inlet and an outlet, a fluid flow path being defined between the inlet and the outlet;
a throttling element moveable in the fluid flow path; and
a throttling element position sensor including;
a magnet housing supported in fixed relation to the main housing and defining an inner surface;
a magnet sized for insertion into the magnet housing and adapted for movement with the throttling element, the magnet having a north pole and a south pole, wherein the magnet generates a magnetic flux;
a centering ring positioned between the magnet and the magnet housing, the centering ring including a biased wall acting to center the magnet in the magnet housing; and
a magnetic field sensor positioned to detect the magnet flux.
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Abstract
A magnet assembly is disclosed for use with a magnetic flux sensor to provide a position sensor adapted to detect a position of a moveable member. The magnet assembly comprises a magnet housing defining an inner surface. A magnet is provided that is sized for insertion into the magnet housing and adapted for movement with the moveable member, the magnet having a north pole and a south pole, wherein the magnet generates a magnetic flux. A centering ring is positioned between the magnet and the magnet housing, the centering ring including a biased wall acting to center the magnet in the magnet housing.
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Citations
14 Claims
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1. A pressure regulator comprising:
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a main housing having an inlet and an outlet, a fluid flow path being defined between the inlet and the outlet;
a throttling element moveable in the fluid flow path; and
a throttling element position sensor including;
a magnet housing supported in fixed relation to the main housing and defining an inner surface;
a magnet sized for insertion into the magnet housing and adapted for movement with the throttling element, the magnet having a north pole and a south pole, wherein the magnet generates a magnetic flux;
a centering ring positioned between the magnet and the magnet housing, the centering ring including a biased wall acting to center the magnet in the magnet housing; and
a magnetic field sensor positioned to detect the magnet flux. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification