US3231769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal generator
Assignee: Individual
•
Filing: 1961-08-09
•
Granted: 1966-01-25
•
Expires: 1981-08-09
Abstract
No abstract record available.
Inventors
- 👤 Hans W Trechsel
- 👤 Co The Northern Trust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:33
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A DEVICE FOR TRANSLATING MOVEMENT INTO PHASE CHANGE OF AN ELECTRICAL SIGNAL INCLUDING A METER ELEMENT HAVING A SOURCE OF MAGNETIC FLUX FORMING GENERALLY EQUALLY SPACED AREAS OF DIFFERENT MAGNETIC FLUX DENSITY, A COIL CONCENTRIC WITH SAID METER ELEMENT, AND MEANS FORMING A FLUX PATH BETWEEN SAID METER ELEMENT AND COIL, A SCANNER POSITIONED AROUND SAID METER ELEMENT AND MEANS PROVIDING RELATIVE ROTATION BETWEEN SAID METER ELEMENT AND SAID SCANNER AT A PREDETERMINED GENERALLY CONSTANT RATE, SAID SCANNER INCLUDING MEANS TO REPEATEDLY INTERRUPT THE FLUX IN SAID PATH TO GENERATE A CYCLIC SIGNAL IN SAID COIL HAVING A PREDETERMINED FREQUENCY, ADDITIONAL RELATIVE MOVEMENT BETWEEN SAID SCANNER AND SAID METER ELEMENT PRODUCING A PHASE CHANGE IN SAID SIGNAL WHICH IS PROPORTIONAL TO SAID MOVEMENT.
Claim 2
Independent Claim
123 words
A DEVICE FOR TRANSLATING MOVEMENT INTO PHASE CHANGE OF AN ELECTRICAL SIGNAL INCLUDING A METER ELEMENT HAVING A SOURCE OF MAGNETIC FLUX FORMING GENERALLY EQUALLY SPACED AREAS OF DIFFERENT MAGNETIC FLUX DENSITY, A COIL CONCENTRIC WITH SAID METER ELEMENT, AND MEANS FORMING A FLUX PATH BETWEEN SAID METER ELEMENT AND COIL, A SCANNER POSITIONED AROUND SAID METER ELEMENT AND MEANS PROVIDING RELATIVE ROTATION BETWEEN SAID METER ELEMENT AND SAID SCANNER AT A PREDETERMINED GENERALLY CONSTANT RATE, SAID SCANNER INCLUDING MEANS TO REPEATEDLY INTERRUPT THE FLUX IN SAID PATH TO GENERATE A CYCLIC SIGNAL IN SAID COIL HAVING A PREDETERMINED FREQUENCY, ADDITIONAL RELATIVE MOVEMENT BETWEEN SAID SCANNER AND SAID METER ELEMENT PRODUCING A PHASE CHANGE IN SAID SIGNAL WHICH IS PROPORTIONAL TO SAID MOVEMENT.
References Cited (Backward Citations)
US2371511A
Cited
US2882516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |