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US 3,954,310 AGranted
Radial magnetic bearing
OwnerEdoardo Ravainventor
Life of this patent
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Abstract
The invention concerns a radial magnetic bearing, which includes an annular fixed magnet, provided with a series of concentric protrusions on its upper and lower surfaces, and a rotating shaft coaxial to the annular magnet, and which has two polar expansions of an annular shape and radially directed which define the housing of the annular magnet and have a series of concentric protrusions, on the walls facing the magnet and positioned exactly opposite the protrusions formed on the face of the magnet.
Claims1
A magnetic bearing comprising:
- a. a fixed, annular magnet having opposed ends substantially transverse the longitudinal axis thereof;
- b. a plurality of axially extending, concentric rings integral with said ends of said magnet;
- c. a rotatable shaft coaxial with said magnets;
- d. a pair of axially spaced apart end caps integral with said shaft, each said end cap being in opposition to one end of said magnet for defining the housing thereof;
- and
- e. a plurality of axially extending, concentric rings integral with each said end cap, said rings of each said end cap being aligned with said rings of said magnet that are in opposition thereto, said rings of said end cap being axially spaced from said rings of said magnet for defining an air gap therebetween, said rings of said magnet having different axial lengths and said rings of said end caps having correspondingly different axial lengths whereby the axial dimension of said air gap therebetween is substantially constant and whereby the opposed surfaces of said rings defining said air gap are in arcuate planes.
3 more elements
Dependencies are inferred from the claim text.