The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 1991
Filed:
Aug. 08, 1989
Jayant Vaidya, Rockford, IL (US);
Raghunath G Mokadam, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
A magnetic bearing (10) in accordance with the invention includes a rotatably supported member (14) having a cylindrical magnet (12) with first and second ends which respectively are first and second magnetic poles with a magnetic field produced by the magnet having a uniform strength around a circumference of the first and second ends; a first sensor (34 or 36) for sensing a direction and amount of radial movement of the rotatable member along a first axis (54 or 56) from a uniform spacing with respect to an annulus (35) surrounding the rotatable member and producing a first signal proportional to the direction and amount of movement along the first axis; and a first electromagnetic circuit (16 to 18) producing an electromagnetic field proportional to the first signal which is additive to the magnetic field along the first axis extending in a radial direction of increased radial spacing between the annulus and the rotatable member and which is subtractive from the magnetic field along the first axis extending in a radial direction of decreased spacing.