US4382245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Levitation device
Assignee: Individual
•
Filing: 1979-12-19
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Granted: 1983-05-03
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Expires: 1999-12-19
Abstract
Abstract A dish-shaped magnet in one form has an upper surface of a first polarity and a lower surface of a second polarity disposed in co-axial relationship to a second magnet having the opposite polar relationships. The magnetic fields in one form of the invention position the second magnet in spaced relation to the dish-shaped magnet. The apparatus has application as a novelty as well as for gyroscopic and other instrumentation apparatus wherein friction must be minimized. The upper magnet may be rotated either manually or by associated apparatus to provide gyroscopic stability.
Inventors
- 👤 Roy M. Harrigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:49
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0236
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
143 words
A levitation device for cooperation with associated means for producing rotational movement which comprises: a first dish-shaped magnet having a concave surface uppermost having a first axis; a second magnet assembly having at least one polar orientation which repels said concave surface; means for stabilizing said second magnet over said first magnet in spaced elevational relationship with only magnetic fields supporting said second magnet said means for stabilizing comprising an element having a second axis, said element including said second magnet, said second magnet repelling said concave surface of said first magnet when said first axis and said second axis are coaxial and said second magnet is disposed above said first magnet; and said element including means for cooperating with the associated means for producing rotational movement to cause said element to rotate about said second axis relative to said first dish-shaped magnet.
Claim 2
Dependent Claim
143 words
A levitation device for cooperation with associated means for producing rotational movement which comprises: a first dish-shaped magnet having a concave surface uppermost having a first axis; a second magnet assembly having at least one polar orientation which repels said concave surface; means for stabilizing said second magnet over said first magnet in spaced elevational relationship with only magnetic fields supporting said second magnet said means for stabilizing comprising an element having a second axis, said element including said second magnet, said second magnet repelling said concave surface of said first magnet when said first axis and said second axis are coaxial and said second magnet is disposed above said first magnet; and said element including means for cooperating with the associated means for producing rotational movement to cause said element to rotate about said second axis relative to said first dish-shaped magnet.
Claim 3
Dependent Claim
28 words
The apparatus as described in claim 1 wherein said first dish-shaped magnet has a cross-section taken through any vertical plane that is symmetrical about the vertical axis thereof.
Claim 4
Dependent Claim
15 words
The apparatus as described in claim 1 wherein said second magnet is a permanent magnet.
Claim 5
Dependent Claim
15 words
The apparatus as described in claim 3 wherein said first magnet is a permanent magnet.
Claim 6
Dependent Claim
14 words
The apparatus as described in claim 1 wherein said second magnet is generally planar.
Claim 7
Dependent Claim
21 words
The apparatus as described in claim 5 wherein said second magnet is fixed to said means for cooperating and rotates therewith.
Claim 8
Dependent Claim
47 words
The apparatus as described in claim 6 wherein said element comprises at least two additional discrete magnets, each magnet in said element being disposed at equal distances from said second axis and with equal angles therebetween measured in a plane which is perpendicular to said second axis.
Claim 9
Dependent Claim
23 words
The apparatus as described in claim 6 wherein said element comprises an elongated member having the axis thereof aligned with said second axis.
Claim 10
Dependent Claim
45 words
The apparatus as described in claim 8 wherein said elongated member has a center of mass disposed beneath said second magnet and said first axis is aligned with said second axis when said elongated member and said first dish-shaped magnet are disposed in cooperating relationship.
Claim 11
Dependent Claim
24 words
The apparatus as described in claim 1 wherein each of said magnets has a peripheral region of the same polarity as the other magnet.
Claim 12
Dependent Claim
34 words
The apparatus as described in claim 10 wherein each of said magnets has a central region of the same polarity as the other magnet and opposite to the peripheral region of the same magnet.
Claim 13
Dependent Claim
49 words
The apparatus as described in claim 1 wherein said first dish-shaped magnet comprises at least three discrete magnets disposed about said first axis, each of said discrete magnets being disposed with the axis thereof inclined at the same angle to said first axis with the same radial angle therebetween.
Claim 14
Dependent Claim
29 words
The apparatus as described in claim 1 wherein said second magnet comprises a plurality of discrete magnets disposed at equal distances about said second axis at equal angular increments.
References Cited (Backward Citations)
US2323837A
Cited
GB642353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |