Patent US3089998A successfully refreshed from Google Patents.
US3089998A
Expired / Lapsed
US
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Regulator system
Assignee: Westinghouse Electric Corp
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Filing: 1959-04-15
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Granted: 1963-05-14
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Expires: 1979-04-15
Abstract
No abstract record available.
Inventors
- 👤 John F Reuther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/22; G05F3/222; G05F3/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A REGULATOR SYSTEM FOR MAINTAINING THE CURRENT SUPPLIED FROM A SOURCE OF UNIDIRECTIONAL CURRENT TO A LOAD AT SUBSTANTIALLY A PREDETERMINED VALUE, THE COMBINATION COMPRISING, A SEMICONDUCTOR DEVICE HAVING A NEGATIVE RESISTANCE REGION IN ITS REVERSE VOLT-AMPERE CHARACTERISTIC, THE CURRENT THROUGH SAID DEVICE IN ITS NEGATIVE RESISTANCE REGION BEING AT SUBSTANTIALLY A PREDETERMINED VALUE, SAID DEVICE BEING CONNECTED IN SERIES CIRCUIT RELATION WITH SAID LOAD, AND MEANS CONNECTED IN CIRCUIT RELATION BETWEEN SAID SOURCE AND SAID DEVICE FOR MAINTAINING THE OPERATION OF SAID DEVICE IN ITS NEGATIVE RESISTANCE REGION TO MAINTAIN THE CURRENT THROUGH SAID LOAD AT SUBSTANTIALLY SAID PREDETERMINED VALUE.
Claim 2
Dependent Claim
102 words
IN A REGULATOR SYSTEM FOR MAINTAINING THE CURRENT SUPPLIED FROM A SOURCE OF UNIDIRECTIONAL CURRENT TO A LOAD AT SUBSTANTIALLY A PREDETERMINED VALUE, THE COMBINATION COMPRISING, A SEMICONDUCTOR DEVICE HAVING A NEGATIVE RESISTANCE REGION IN ITS REVERSE VOLT-AMPERE CHARACTERISTIC, THE CURRENT THROUGH SAID DEVICE IN ITS NEGATIVE RESISTANCE REGION BEING AT SUBSTANTIALLY A PREDETERMINED VALUE, SAID DEVICE BEING CONNECTED IN SERIES CIRCUIT RELATION WITH SAID LOAD, AND MEANS CONNECTED IN CIRCUIT RELATION BETWEEN SAID SOURCE AND SAID DEVICE FOR MAINTAINING THE OPERATION OF SAID DEVICE IN ITS NEGATIVE RESISTANCE REGION TO MAINTAIN THE CURRENT THROUGH SAID LOAD AT SUBSTANTIALLY SAID PREDETERMINED VALUE.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |