Magnetic propulsion system
US Pat. 5402021 - Filed May 24, 1993
... [ii] Patent Number: 5402021 [45] Date of Patent: Mar. 28, [54] MAGNETIC
PROPULSION SYSTEM [76] Inventor: Howard R. Johnson, Harding Rd., Blacksburg, Va.
... Flat linear motor
US Pat. 5723917 - Filed Nov 30, 1994 - Anorad Corporation
... al 310/ 5.309,049 5/ Kawada et al 310/ 5402021 3/ Johnson 310/ Primary
Examiner— Thomas M. Dougherty Assistant Examiner— Jonathan Link Attorney, Agent,
... Wedge magnet array for linear motor
US Pat. 6104108 - Filed Dec 22, 1998 - Nikon Corporation
22, [51] Int. Cl.7 H02K 41/00 [52] US Cl 310/; 310/42 [58] Field of Search 310/,
42 [56] References Cited US PATENT DOCUMENTS 5402021 3/ Johnson 310/ ... Permanent magnet motor
US Pat. 6867514 - Filed Sep 7, 2004
... A * 5/1994 Suzuki 310/40 MM 5402021 A * 3/1995 Johnson 310/12 ... Apparatus, systems and methods for levitating and moving objects
US Pat. 7204192 - Filed Apr 22, 2003 - Magna Force, Inc.
... A 9/1994 5402021 A 3/1995 ... Magnetic impulse reaction driven toys
US Pat. 6361393 - Filed Oct 9, 1998 - Elenco Electronics, Inc.
... A * 2/ 5402021 A 3/ ... Permanent magnet eddy brake with flux-steering poles
US Pat. 6523650 - Filed Feb 8, 2001 - Magnetar Technologies, Inc.
... et al/292 5402021 A * 3/ Johnson 310/ ... Positive displacement shoe and slat sorter apparatus and method
US Pat. 7086519 - Filed Mar 15, 2005 - Dematic Corp.
... A 5402021 A ... Axially focused radial magnet voice coil actuator
US Pat. 5539262 - Filed Aug 3, 1994 - Aura Systems, Inc.
3, [51] Int. Cl.6 H02K 41/00 [52] US Cl 310/; 310/ [58] Field of Search 310/,,;
318/ [56] References Cited US PATENT DOCUMENTS 5402021 5/ Johnson 310/ ... Eddy current braking apparatus
US Pat. 6533083 - Filed Feb 15, 2000 - Magnetar Technologies, Inc
... A */ 5402021 A * 3/ ...  Stay up to date on these results using the patents RSS feed on 5402021.
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