US3892185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low drag magnetic suspension system
Assignee: Boeing North American Inc
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Filing: 1972-04-24
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Granted: 1975-07-01
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Expires: 1992-04-24
Abstract
Abstract An improved magnetic suspension system including an improved guide-way channel for moving bodies including vehicles of eddy current repulsion between said magnets and said guideway channel containing nonferromagnetic conductors and attraction to a ferromagnetic member. This combination suspension system provides effective lift at low speeds and greatly improved lift/drag ratios.
Inventors
- 👤 Charles A Guderjahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:07
CPC Classifications
B; B60; B60L; B60L13/00; B60L13/04; B61; B61B; B61B13/00; B61B13/08; B60L2200/00; B60L2200/26; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/902; Y10S505/903
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
An improved composite guide-way for providing lift forces to bodies, which bodies have attached thereto at least one magnet which is adapted to move in a predetermined path along the course of said guide-way comprising: a. a first layer containing nonferromagnetic conductor material, said layer being disposed above said predetermined path; b. a second layer containing ferromagnetic material, said layer being positioned intermediate said first layer and said predetermined path, and c. supporting means to rigidly support said first and second layers, said supporting means being so arranged as to allow maximum flow of magnetically induced current in said first layer.
Claim 2
Dependent Claim
101 words
An improved composite guide-way for providing lift forces to bodies, which bodies have attached thereto at least one magnet which is adapted to move in a predetermined path along the course of said guide-way comprising: a. a first layer containing nonferromagnetic conductor material, said layer being disposed above said predetermined path; b. a second layer containing ferromagnetic material, said layer being positioned intermediate said first layer and said predetermined path, and c. supporting means to rigidly support said first and second layers, said supporting means being so arranged as to allow maximum flow of magnetically induced current in said first layer.
Claim 3
Dependent Claim
32 words
The improved guide-way of claim 1 further including a third layer containing nonferromagnetic conductor material, said third layer being disposed beneath said predetermined path, and means to rigidly support said third layer.
Claim 4
Dependent Claim
45 words
The improved guide-way of claim 1 further including fourth and fifth layers of nonferromagnetic conductor material vertically disposed and positioned at the respective sides of and along said predetermined path and extending at least a portion of the distance between said first and third layers.
Claim 5
Dependent Claim
27 words
The improved guide-way of claim 1 wherein the layer material on a selected surface of said guide-means has a slot therein extending the length of said guide-means.
Claim 6
Dependent Claim
22 words
The improved guide-way of claim 1 wherein said second layer comprises laminations of ferromagnetic materials with thin layers of insulation between laminations.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |