US3351871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical oscillator with hysteresis and delay elements
Assignee: Individual
•
Filing: 1965-06-10
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Granted: 1967-11-07
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Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 William H Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:06
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/023; H03K3/0231
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN AN OSCILLATING DEVICE, A HYSTERESIS ELEMENT HAVING AN OUTPUT IN EITHER ONE OF TWO BINARY STATES, ONE STATE BEING INDUCED BY AN INPUT SIGNAL THAT MUST EXCEED A THRESHOLD AND THE OTHER BEING INDUCED BY A SIGNAL THAT MUST BE BELOW ANOTHER THRESHOLD, THE TWO THRESHOLDS BEING SEPARATED BY A FINITE DIFFERENCE; AN LC DELAY ELEMENT HAVING A SIGNAL RESPONSE OUTPUT WHICH OCCURS SOME FINITE TIME AFTER AN INPUT SIGNAL STIMULUS; MEANS FOR COUPLING SAID ELEMENTS TOGETHER IN SERIES IN A FEEDBACK LOOP, MEANS COUPLED IN SAID LOOP FOR PROVIDING SUFFICIENT SIGNAL MAGNITUDE GAIN AROUND THE LOOP SUCH THAT THE DELAY ELEMENT SIGNAL RESPONSE OUTPUT CAUSES SAID HYSTERESIS ELEMENT INPUT SIGNALS TO RESPECTIVELY EXCEED AND BE BELOW SAID THRESHOLDS; AND MEANS FOR CAUSING SIGNAL INVERSION AT AN ODD NUMBER OF POINTS IN THE LOOP.
Claim 2
Dependent Claim
135 words
IN AN OSCILLATING DEVICE, A HYSTERESIS ELEMENT HAVING AN OUTPUT IN EITHER ONE OF TWO BINARY STATES, ONE STATE BEING INDUCED BY AN INPUT SIGNAL THAT MUST EXCEED A THRESHOLD AND THE OTHER BEING INDUCED BY A SIGNAL THAT MUST BE BELOW ANOTHER THRESHOLD, THE TWO THRESHOLDS BEING SEPARATED BY A FINITE DIFFERENCE; AN LC DELAY ELEMENT HAVING A SIGNAL RESPONSE OUTPUT WHICH OCCURS SOME FINITE TIME AFTER AN INPUT SIGNAL STIMULUS; MEANS FOR COUPLING SAID ELEMENTS TOGETHER IN SERIES IN A FEEDBACK LOOP, MEANS COUPLED IN SAID LOOP FOR PROVIDING SUFFICIENT SIGNAL MAGNITUDE GAIN AROUND THE LOOP SUCH THAT THE DELAY ELEMENT SIGNAL RESPONSE OUTPUT CAUSES SAID HYSTERESIS ELEMENT INPUT SIGNALS TO RESPECTIVELY EXCEED AND BE BELOW SAID THRESHOLDS; AND MEANS FOR CAUSING SIGNAL INVERSION AT AN ODD NUMBER OF POINTS IN THE LOOP.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |