Rotary magnetic position indicator having odd number of positions
Abstract
Abstract A rotary magnetic position indicator which provides an odd number, such as eleven, positions. A magnetic stator structure is provided including an odd number of radially inwardly extending, equally angularly spaced polar projections respectively having inner ends which define a bore, and an equal number of coils is positioned on the stator structure. A permanent magnet rotor member is rotatably mounted in the bore and has one polar projection of one polarity, and two polar projections of the opposite polarity equally spaced on opposite sides of a diameter of the rotor member which extends through the one polar projection. The two rotor member polar projections are respectively aligned with two adjacent stator polar projections when the one rotor member polar projection is aligned with another stator polar projection. Means are provided for selectively energizing the coils, one at a time, thereby to polarize the respective stator polar projection oppositely from the polarization of the one rotor member polar projection thus causing the one rotor member polar projection to align itself with the energized stator polar projection.
Inventors
- 👤 P Harden
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |