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US 5,481,146 AGranted
Passive null flux coil magnetic bearing system for translation or rotation
AssigneePark Square, Inc.
InventorKent R. Davey
Life of this patent
Estimating the term…
Abstract
An apparatus, and methods of making and using the apparatus, including at least a first path of magnetic flux perpendicular to and penetrating a first plane in space; preferably, a second path of magnetic flux perpendicular to the first plane and having a gradient such that no net flux passes the first plane; and a passive first null flux coil adjacent to the first plane; whereby when one of the first null flux coil and a combination of the paths is moving, the first null flux coil and the paths, combinatorily, are magnetically induced into alignment with respect to the first plane.
Claims42
An apparatus comprising:
- a first path of magnetic flux perpendicular to and penetrating a first plane in space;
- a second path of magnetic flux perpendicular to said first plane and having a gradient such that no net flux passes said first plane;
- and
- a passive first null flux coil adjacent to said first plane;
- whereby when one of said first null flux coil and a combination of said paths is moving, said first null flux coil and said paths, combinatorilly, are magnetically induced into alignment with respect to said first plane.
2 more elements
An apparatus comprising:
- a first member rotating periodically around an axis;
- a first magnetic source producing a flux path;
- and
- a first passive null flux coil;
- wherein
- one of said magnetic source and said null flux coil is mounted on said first member to move with respect to an other of said magnetic source and said null flux coil, to produce a respective periodically repeating flux pattern;
- whereby
- said flux pattern induces said null flux coil into alignment perpendicular to said path.
5 more elements
Dependencies are inferred from the claim text.