US3558803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet strip conductor
Assignee: Revere Copper and Brass Inc
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Filing: 1969-08-26
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Granted: 1971-01-26
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Expires: 1989-08-26
Abstract
Abstract A magnet strip conductor comprising a thin strip of electrically conductive metal whose edges are contoured to be tangent to the adjoining flat faces of the strip and to have an intermediate portion having a smaller radius of curvature than the tangent portion, all of the flat and contoured surfaces of the strip being completely covered with a coating of insulating material.
Inventors
- 👤 Donald H Osborn
- 👤 Robert F Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:06
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; H01B; H01B7/00; H01B7/0009; H01B7/0018; H01F27/00; H01F27/28; H01F27/32; H01F27/323; H01F5/00; H01F5/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A magnet strip conductor comprising a thin strip of electrically conductive metal, the two edges of the strip each having a contour characterized by at least two substantially different radii of curvature, the portions of said contour adjoining the flat faces of the strip being tangent thereto and having a substantially larger radius of curvature than a portion of the contour intermediate said tangent portions, and a coating of insulating material completely covering all of said flat and contour surfaces of the strip.
Claim 2
Dependent Claim
83 words
A magnet strip conductor comprising a thin strip of electrically conductive metal, the two edges of the strip each having a contour characterized by at least two substantially different radii of curvature, the portions of said contour adjoining the flat faces of the strip being tangent thereto and having a substantially larger radius of curvature than a portion of the contour intermediate said tangent portions, and a coating of insulating material completely covering all of said flat and contour surfaces of the strip.
Claim 3
Dependent Claim
18 words
A magnet strip according to claim 1 in which said contour is in the form of an ellipse.
Claim 4
Dependent Claim
30 words
A magnet strip according to claim 2 in which the a axis of the ellipse has a dimension ranging from about 1/3 to 3 times that of its b axis.
References Cited (Backward Citations)
US3501728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |