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US3754143A
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US
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Magnetic-optical generator
Assignee: Alstom Savoisienne SA
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Filing: 1971-09-23
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Granted: 1973-08-21
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Expires: 1991-09-23
Abstract
Abstract Magnetic-optical generator, transmitting light impulses along several channels, characterized by the fact that a portion of the flow transmitted in each channel is sent on to a photo-electric detector whose electric output signal is compared to a reference in order to give a signalwhich is in sequence switched by a control logic to the control of a magnetic field producing coil in each one of the channels taken in succession.
Inventors
- 👤 G Lesueur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:40
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/24; G01R15/245; G01R15/246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A magnetic-optical generator transmitting light impulses along several channels comprising: in each of the channels in which it transmits, a chain made up of at least: a light source, a poliarizer, a material with magnetic rotating power, a coil for generating an electrical field, said field influencing said material, and an analyzer crossed with the polarizer, at the output of which a light flow is available for utilization, and means for dividing the light flow from said analyzer; a determined portion of the light flow coming out of each analyzer being supplied to a single photo-electric detector, common to all said channels, a comparator receiving the output of said detector and receiving an electrical reference magnitude and furnishing a comparison signal said comparison signal being used to control the power supply of the coils, and a control logic which, in sequence, shunts the comparison signal to the power supply of the coil of one of said channels, taken in succession, and simultaneously blocking the power supply to the coils of the other channels.
Claim 2
Dependent Claim
173 words
A magnetic-optical generator transmitting light impulses along several channels comprising: in each of the channels in which it transmits, a chain made up of at least: a light source, a poliarizer, a material with magnetic rotating power, a coil for generating an electrical field, said field influencing said material, and an analyzer crossed with the polarizer, at the output of which a light flow is available for utilization, and means for dividing the light flow from said analyzer; a determined portion of the light flow coming out of each analyzer being supplied to a single photo-electric detector, common to all said channels, a comparator receiving the output of said detector and receiving an electrical reference magnitude and furnishing a comparison signal said comparison signal being used to control the power supply of the coils, and a control logic which, in sequence, shunts the comparison signal to the power supply of the coil of one of said channels, taken in succession, and simultaneously blocking the power supply to the coils of the other channels.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |