US3961211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyroscope motor
Assignee: Thales Avionics SAS
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Filing: 1974-12-31
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Granted: 1976-06-01
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Expires: 1994-12-31
Abstract
Abstract Gyroscope motor of the type comprising a magnetized rotor constituted by a permanent magnet in the shape of a toroid, within which are disposed the stator windings, the commutation being ensured by means of a static detector operating by variation of the impedance of a winding placed in the magnetic circuit, wherein the saturation of said magnetic circuit is obtained directly by means of the field of the rotor.
Inventors
- 👤 Jacques Vergues
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:56
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/12; G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/06; G01C19/08; H02K11/00; H02K11/20; H02K11/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
Gyroscope motor of the type comprising a magnetized rotor constituted by a permanent magnet in the shape of a toroid, within which are disposed the stator windings, the commutation being ensured by means of a static detector operating by variation of the impedance of a winding placed in the magnetic circuit, the saturation of said magnetic circuit being obtained directly by means of the field of the rotor; said detector comprising a miniature ferrite core circuit containing a coil, a rectangular-sided magnet of oriented ferrite, an armature of high permeability material comprising two rectangular strips connecting the magnet to the core circuit; said detector being disposed in such manner that its armatures are perpendicular to the surface of the rotor so as to act as a collector of the lines of force, and being in intimate contact with the driving coils of the motor, and the Curie point of its magnetic circuit being in the neighbourhood of 120°C so that it may serve as a safety thermostat.
Claim 2
Dependent Claim
167 words
Gyroscope motor of the type comprising a magnetized rotor constituted by a permanent magnet in the shape of a toroid, within which are disposed the stator windings, the commutation being ensured by means of a static detector operating by variation of the impedance of a winding placed in the magnetic circuit, the saturation of said magnetic circuit being obtained directly by means of the field of the rotor; said detector comprising a miniature ferrite core circuit containing a coil, a rectangular-sided magnet of oriented ferrite, an armature of high permeability material comprising two rectangular strips connecting the magnet to the core circuit; said detector being disposed in such manner that its armatures are perpendicular to the surface of the rotor so as to act as a collector of the lines of force, and being in intimate contact with the driving coils of the motor, and the Curie point of its magnetic circuit being in the neighbourhood of 120°C so that it may serve as a safety thermostat.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |