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Title: Non-contacting "snubber bearing" for passive magnetic bearing systems

Patent ·
OSTI ID:1376063

A new non-contacting magnetic "snubber" bearing is provided for application to rotating systems such as vehicular electromechanical battery systems subject to frequent accelerations. The design is such that in the equilibrium position the drag force of the snubber is very small (milliwatts). However in a typical case, if the rotor is displaced by as little as 2 millimeters a large restoring force is generated without any physical contact between the stationary and rotating parts of the snubber bearing.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC
Patent Number(s):
9,739,307
Application Number:
14/556,029
OSTI ID:
1376063
Resource Relation:
Patent File Date: 2014 Nov 28
Country of Publication:
United States
Language:
English

References (19)

Electromagnetic bearing control apparatus patent June 1989
Dynamically stable magnetic suspension/bearing system patent February 1996
Magnetic levitation system for moving objects patent March 1998
Self-adjusting magnetic bearing systems patent July 1998
Combined passive bearing element/generator motor patent August 2000
Motor/active magnetic bearing combination structure patent September 2000
Magnetic bearings patent September 2000
Passive magnetic bearing for a horizontal shaft patent December 2003
Inductrack magnet configuration patent December 2003
Halbach array generator/motor having an automatically regulated output voltage and mechanical power output patent February 2005
Halbach array generator/motor having mechanically regulated output voltage and mechanical power output patent June 2005
Eddy-current-damped microelectromechanical switch patent October 2007
Motor and magnetic bearing assembly thereof patent-application August 2005
Method and Apparatus for Controlling a Magnetic Bearing Device patent-application December 2007
Low-Cost Minimal-Loss Flywheel Battery patent-application November 2010
Stabilization of Flywheels patent-application April 2012
Stabilization of Rotating Machinery patent-application April 2012
System And Method For Damping A Wind Vane patent-application June 2012
Inner Rotor-Type Permanent Magnet Motor patent-application April 2013

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