US3668699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic viewer for disks having magnetic polarity alignment
Assignee: 3M Co
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Filing: 1970-11-12
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Granted: 1972-06-06
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Expires: 1990-11-12
Abstract
Abstract A device for providing a visual indication of data represented by magnetic polarity alignments at each of a plurality of disparate magnetized regions defining a fixed two-dimensional pattern. The device comprises a board containing a plurality of disks positioned in said fixed pattern, which disks are constrained to rotate with their flat surfaces in the plane of the fixed pattern. Each disk comprises magnetized magnetic material having a magnetic polarity alignment parallel to a given flat surface of the disk and a plurality of visible indicia positioned on the given flat surface of the disk in a predetermined order in relation to the polarity alignment. A mask is positioned on the board to cover the disks and contains apertures aligned over a predetermined portion of each disk position for providing a view of whichever ones of the visible indicia on the disks are rotatably aligned with the apertures.
Inventors
- 👤 Peter J Vogelgesang
- 👤 John D Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:07
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/08; G06K7/082; G06K7/087
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
A device for providing a visual indication of data represented by magnetic polarity alignments at each of a plurality of disparate magnetized regions defining a fixed twodimensional pattern, which device comprises a board containing a plurality of disks positioned in said fixed pattern, which disks are constrained to Rotate with their flat surfaces in the plane of said fixed pattern, each disk comprising magnetized magnetic material having a magnetic polarity alignment parallel to a given flat surface of the disk, and a plurality of visible indicia positioned on the given flat surface of the disk in a predetermined order in relation to said polarity alignment; and indicator means positioned on the board in relation to the disks to provide visual indications of the visible indicia indicating the rotational alignment of the disks.
Claim 2
Independent Claim
132 words
A device for providing a visual indication of data represented by magnetic polarity alignments at each of a plurality of disparate magnetized regions defining a fixed twodimensional pattern, which device comprises a board containing a plurality of disks positioned in said fixed pattern, which disks are constrained to Rotate with their flat surfaces in the plane of said fixed pattern, each disk comprising magnetized magnetic material having a magnetic polarity alignment parallel to a given flat surface of the disk, and a plurality of visible indicia positioned on the given flat surface of the disk in a predetermined order in relation to said polarity alignment; and indicator means positioned on the board in relation to the disks to provide visual indications of the visible indicia indicating the rotational alignment of the disks.
Claim 3
Dependent Claim
27 words
A device according to claim 1, wherein the relationship between the magnetic polarity alignment and the predetermined order of the visible indicia is different for different disks.
Claim 4
Dependent Claim
29 words
A device according to claim 1, wherein the visible indicia are numbers and wherein the predetermined order of the numbers on one or more of the disks is scrambled.
Claim 5
Dependent Claim
42 words
A device according to claim 1, wherein the board contains a plurality of sockets positioned in the fixed pattern, each of which sockets contains a said disk and further contains a liquid having a density greater than the density of said disk.
Claim 6
Dependent Claim
42 words
A device according to claim 4, wherein each socket further contains a second liquid having a density less than the density of said disk, which second liquid is immiscible with the liquid having a density greater than the density of the disk.
Claim 7
Dependent Claim
30 words
A device according to claim 4, wherein each socket further contains a pin positioned through the center of said disk and about which pin said disk is free to rotate.
Claim 8
Dependent Claim
42 words
A device according to claim 6, wherein each socket further contains a second liquid having a density less than the density of said disk, which second liquid is immiscible with the liquid having a density greater than the density of the disk.
Claim 9
Dependent Claim
24 words
A device according to claim 1, wherein each disk comprises a stratum including a polyvinyl chloride material, which stratum is coated with magnetic particles.
Claim 10
Independent Claim
149 words
A device for providing a visual indication of data represented by magnetic polarity alignments at each of a plurality of disparate magnetized regions defining a fixed two-dimensional pattern, which device comprises a board containing a plurality of disks positioned in said fixed pattern, which disks are constrained to rotate with their flat surfaces in the plane of said fixed pattern, each disk comprising magnetized magnetic material having a magnetic polarity alignment parallel to a given flat surface of the disk, and a plurality of visible indicia positioned on the given flat surface of the disk in a predetermined order in relation to said polarity alignment; and a mask positioned on the board to cover the disks and containing an aperture aligned over a predetermined portion of each disk position for providing a view of whichever ones of the visible indicia on the disks are rotatably aligned with the aperture.
Claim 11
Independent Claim
149 words
A device for providing a visual indication of data represented by magnetic polarity alignments at each of a plurality of disparate magnetized regions defining a fixed two-dimensional pattern, which device comprises a board containing a plurality of disks positioned in said fixed pattern, which disks are constrained to rotate with their flat surfaces in the plane of said fixed pattern, each disk comprising magnetized magnetic material having a magnetic polarity alignment parallel to a given flat surface of the disk, and a plurality of visible indicia positioned on the given flat surface of the disk in a predetermined order in relation to said polarity alignment; and a mask positioned on the board to cover the disks and containing an aperture aligned over a predetermined portion of each disk position for providing a view of whichever ones of the visible indicia on the disks are rotatably aligned with the aperture.
Claim 12
Dependent Claim
23 words
A device according to claim 1 wherein there are at least three visible indicia positioned on the given flat surface of each disk.
References Cited (Backward Citations)
US3300776A
Cited
US3469258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |