Patent US5402021A successfully refreshed from Google Patents.
US5402021A
Expired / Lapsed
US
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Magnetic propulsion system
Assignee: Individual
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Filing: 1993-05-24
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Granted: 1995-03-28
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Expires: 2013-05-24
Abstract
Abstract A magnetic propulsion system including a plurality of specifically arranged permanent magnets and a magnetic vehicle propelled thereby along a path defined by the permanent magnets. The magnetic vehicle which is to be propelled includes a rigidly attached armature comprising several curved magnets. The propulsion system further includes two parallel walls of permanent magnets arranged so as to define the lateral sides of a vehicle path. Preferably, the walls are identical to one another except that the polarities of the magnets which define one wall are opposite from the polarities of the corresponding magnets in the opposite wall. A first wall, for example, includes a series of generally rectangular magnets, each magnet arranged with a North-to-South axis pointing longitudinally down the wall in the intended direction of vehicle travel. Each of the rectangular magnets is separated from the next successive rectangular magnet by a thinner magnet, which thinner magnet is arranged with its North-to-South axis pointing laterally toward the opposite wall and therefore perpendicular with respect to the North-to-South axis of the rectangular magnets. The opposite (or second) wall includes the same general arrangement of magnets, except that the North-to-South axis for each of the generally rectangular magnets is in a direction opposite from the direction of vehicle travel and the North-to-South axis of the thinner magnets points away from the first wall. In addition, the propulsion system includes several spin accelerators.
Inventors
- 👤 Howard R. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:22
CPC Classifications
H; H02; H02K; H02K53/00; B; B65; B65G; B65G54/00; B65G54/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
397 words
A magnetic propulsion system comprising: a vehicle having a rigidly attached magnetic armature, said magnetic armature including a first series of magnets positioned across said vehicle and extending generally from one lateral side of the vehicle to another lateral side of the vehicle, all of the magnets in said first series of magnets being generally parallel to one another; a first magnetic wall disposed laterally adjacent said vehicle and extending longitudinally along a desired direction of vehicle travel, said first magnetic wall comprising a second series of magnets, each of the magnets in said second series having a particular size and a North-to-South axis pointing in the same direction as the desired direction of vehicle travel, each of said permanent magnets of said particular size in said second series being separated from the next successive permanent magnet in said second series by a thinner magnet, each of said thinner magnets having a pole-to-pole length which is shorter than the lateral width of said magnets of a particular size in said second series, said thinner magnets further having a North-to-South axis pointing perpendicular to the North-to-South axis of said magnets of a particular size in said second series and pointing generally toward a vehicle side of the first magnetic wall; and a second magnetic wall disposed generally parallel to said first magnetic wall and laterally adjacent to said vehicle but opposite from said first magnetic wall, said second magnetic wall comprising a third series of magnets, each of said magnets in said third series having said particular size and a North-to-South axis pointing in an opposite direction from the desired direction of vehicle travel, each of the permanent magnets in said third series being separated from the next successive permanent magnet of said particular size in said third series by a thinner magnet, each of said thinner magnets in the second magnetic wall having a pole-to-pole length which is shorter than the lateral width of said magnets of a particular size in said third series, said thinner magnets in the second magnetic wall further having a North-to-South axis pointing in the same general direction as the North-to-South axis of the thinner magnets in the first magnetic wall; wherein said first and second magnetic walls create magnetic fields which exert propelling forces on said armature and thereby cause the vehicle to accelerate in the desired direction of vehicle travel.
Claim 2
Dependent Claim
397 words
A magnetic propulsion system comprising: a vehicle having a rigidly attached magnetic armature, said magnetic armature including a first series of magnets positioned across said vehicle and extending generally from one lateral side of the vehicle to another lateral side of the vehicle, all of the magnets in said first series of magnets being generally parallel to one another; a first magnetic wall disposed laterally adjacent said vehicle and extending longitudinally along a desired direction of vehicle travel, said first magnetic wall comprising a second series of magnets, each of the magnets in said second series having a particular size and a North-to-South axis pointing in the same direction as the desired direction of vehicle travel, each of said permanent magnets of said particular size in said second series being separated from the next successive permanent magnet in said second series by a thinner magnet, each of said thinner magnets having a pole-to-pole length which is shorter than the lateral width of said magnets of a particular size in said second series, said thinner magnets further having a North-to-South axis pointing perpendicular to the North-to-South axis of said magnets of a particular size in said second series and pointing generally toward a vehicle side of the first magnetic wall; and a second magnetic wall disposed generally parallel to said first magnetic wall and laterally adjacent to said vehicle but opposite from said first magnetic wall, said second magnetic wall comprising a third series of magnets, each of said magnets in said third series having said particular size and a North-to-South axis pointing in an opposite direction from the desired direction of vehicle travel, each of the permanent magnets in said third series being separated from the next successive permanent magnet of said particular size in said third series by a thinner magnet, each of said thinner magnets in the second magnetic wall having a pole-to-pole length which is shorter than the lateral width of said magnets of a particular size in said third series, said thinner magnets in the second magnetic wall further having a North-to-South axis pointing in the same general direction as the North-to-South axis of the thinner magnets in the first magnetic wall; wherein said first and second magnetic walls create magnetic fields which exert propelling forces on said armature and thereby cause the vehicle to accelerate in the desired direction of vehicle travel.
Claim 3
Dependent Claim
18 words
The magnetic propulsion system of claim 1, wherein all of the magnets are comprised of permanent magnetic material.
Claim 4
Dependent Claim
35 words
The magnetic propulsion system of claim 1, and further comprising a track disposed between the first and second magnetic walls, said vehicle further comprising at least four wheels for engaging and riding on said track.
Claim 5
Dependent Claim
39 words
The magnetic propulsion system of claim 1, wherein the pole-to-pole length of said thinner magnets in said first magnetic wall is shorter than half the lateral width of the magnets of said particular size in said first magnetic wall.
Claim 6
Dependent Claim
39 words
The magnetic propulsion system of claim 1, wherein the pole-to-pole length of said thinner magnets in said second magnetic wall is shorter than half the lateral width of the magnets of said particular size in said second magnetic wall.
Claim 7
Dependent Claim
48 words
The magnetic propulsion system of claim 1, wherein the thinner magnets in both the first and second magnetic walls, are disposed flush with the outer sides of said first and second walls thereby defining a series of gaps on the internal sides of said first and second walls.
Claim 8
Dependent Claim
40 words
The magnetic propulsion system of claim 1, wherein said first series of magnets are curved permanent magnets, each having a North-to-South axis pointing in the same direction as that of the thinner magnets in the first and second magnetic walls.
Claim 9
Dependent Claim
20 words
The magnetic propulsion system of claim 7, wherein said curved permanent magnets are "Alnico 8" magnets tipped with neodymium magnets.
Claim 10
Dependent Claim
38 words
The magnetic propulsion system of claim 1, wherein all the magnets in said second and third series of magnets in said first and second magnetic walls are permanent ceramic magnets with at least one pole made of neodymium.
Claim 11
Dependent Claim
27 words
The magnetic propulsion system of clam 1, and further comprising at least one spin accelerator extending laterally out from each of said first and second magnetic walls.
Claim 12
Dependent Claim
27 words
The magnetic propulsion system of clam 1, and further comprising at least one spin accelerator extending laterally out from each of said first and second magnetic walls.
Claim 13
Dependent Claim
148 words
The magnetic propulsion system of claim 10, wherein said at least one spin accelerator comprises: a permanent magnet of a second particular size arranged in contact with one of said first or second magnetic walls, said permanent magnet of a second particular size having a North-to-South axis pointing in the same direction as that of the thinner magnets in said first and second magnetic walls; a generally shorter permanent magnet having a pole-to-pole length shorter than that of the permanent magnet of said second particular size, said generally shorter magnet having a North-to-South axis pointing in the same general direction as that of the thinner magnets in said first and second magnetic walls but tilted away from said same general direction by an acute angle; and a wedge separating said permanent magnet of said second particular size from said generally shorter magnet, said wedge defining said acute angle.
Claim 14
Dependent Claim
37 words
The magnetic propulsion system of claim 11, wherein said permanent magnet having said second particular size comprises a ceramic magnet having at least one neodymium pole, and said generally shorter permanent magnet is comprised entirely of neodymium.
Claim 15
Dependent Claim
12 words
The magnetic propulsion system of claim 11, wherein said wedge comprises wood.
Claim 16
Dependent Claim
17 words
The magnetic propulsion system of claim 11, wherein said acute angle is between 45 and 90 degrees.
Claim 17
Dependent Claim
28 words
The magnetic propulsion system of claim 11, wherein said spin accelerators are positioned at every other one of said thinner magnets in said first and second magnetic walls.
Claim 18
Dependent Claim
23 words
The magnetic propulsion system of claim 1, wherein said thinner magnets in said first and second magnetic walls are comprised of magnetic rubber.
Claim 19
Dependent Claim
23 words
The magnetic propulsion system of claim 1, wherein said thinner magnets in said first and second magnetic walls are comprised of magnetic plastic.
Claim 20
Dependent Claim
42 words
The magnetic propulsion system of claim 1, wherein said thinner magnets in said first and second magnetic walls are comprised of more than one layer of permanently magnetic material selected from the group consisting of permanently magnetic rubber and permanently magnetic plastic.
Claim 21
Dependent Claim
27 words
The magnetic propulsion system of claim 1, wherein the distance separating the armature from the first and second magnetic walls is between 0.5 inch and 1.25 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |