US3213197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency responsive apparatus
Assignee: Unisys Corp
•
Filing: 1962-04-04
•
Granted: 1965-10-19
•
Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert D Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:24
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; G; G01; G01H; G01H9/00; G01H9/004; G01H9/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
APPARATUS RESPONSIVE TO VIBRATORY MOTION COMPRISING A LIGHT CONDUCTIVE FIBER ONE END WHICH IS ADAPTED TO BE ILLUMINATED BY A SOURCE OF LIGHT, SIGNAL PRODUCING MEANS ADAPTED TO RECEIVE LIGHT FROM THE OTHER END OF SAID FIBER AND PRODUCE A SIGNAL PROPORTIONAL THERETO, MASK MEANS POSITIONED BETWEEN SAID FIBER''S OTHER END AND SAID SIGNAL PRODUCING MERANS, AND MEANS FOR VIBRATING SAID FIBER, SAID MASK MEANS BEING OF A FORM THAT INTERCEPTS AND PASSES THE LIGHT FROM SAID FIBER''S OTHER END DEPENDING ON WHETHER SAID FIBER VIBRATES WITH AN AMPLITUDE ABOVE OR BELOW A PERDETERMINED MAGNITUDE, WHEREBY THE LIGHT BEING EMITTED FROM SAID FIBER''S OTHER END MAY FALL PERIODICALLY ON SAID SIGNAL PRODUCING MEANS.
Claim 2
Dependent Claim
113 words
APPARATUS RESPONSIVE TO VIBRATORY MOTION COMPRISING A LIGHT CONDUCTIVE FIBER ONE END WHICH IS ADAPTED TO BE ILLUMINATED BY A SOURCE OF LIGHT, SIGNAL PRODUCING MEANS ADAPTED TO RECEIVE LIGHT FROM THE OTHER END OF SAID FIBER AND PRODUCE A SIGNAL PROPORTIONAL THERETO, MASK MEANS POSITIONED BETWEEN SAID FIBER''S OTHER END AND SAID SIGNAL PRODUCING MERANS, AND MEANS FOR VIBRATING SAID FIBER, SAID MASK MEANS BEING OF A FORM THAT INTERCEPTS AND PASSES THE LIGHT FROM SAID FIBER''S OTHER END DEPENDING ON WHETHER SAID FIBER VIBRATES WITH AN AMPLITUDE ABOVE OR BELOW A PERDETERMINED MAGNITUDE, WHEREBY THE LIGHT BEING EMITTED FROM SAID FIBER''S OTHER END MAY FALL PERIODICALLY ON SAID SIGNAL PRODUCING MEANS.
References Cited (Backward Citations)
US2196166A
Cited
US2476445A
Cited
US2506672A
Cited
US2492062A
Cited
US2582793A
Cited
US2575910A
Cited
US2685615A
Cited
US2804500A
Cited
US2825260A
Cited
US2951736A
Cited
US3043179A
Cited
US3036153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |