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:
Nov. 13, 2018
Filed:
Oct. 24, 2014
Raymond James Walsh, Dallas, TX (US);
Raymond James Walsh, Dallas, TX (US);
Other;
Abstract
A magnetic bearing retains a rotatable shaft in a selected position by magnetic coupling between a circular magnet and one or more magnet arrays. Each magnetic coupling completes a magnetic circuit. The magnet arrays focus magnetic flux towards the circular magnet to facilitate magnetic coupling. Magnet arrays configured in Halbach series may be employed. Magnet arrays configured as electromagnets may also be employed. The shaft may be attached either to the circular magnet or the magnet arrays. Shaft rotation does not affect the magnetic circuit, but axial displacement of the shaft disrupts the magnetic circuit and increases magnetic reluctance. Increasing magnetic reluctance inhibits axial displacement. The shaft thereby supports a load while rotating freely, constrained to a selected position by forces of magnetic reluctance. A centering bearing may be employed to maintain gap distance between circular magnet and one or more magnet arrays.