US3248559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection circuit
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1961-07-21
•
Granted: 1966-04-26
•
Expires: 1981-07-21
Abstract
No abstract record available.
Inventors
- 👤 Azar Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A PULSE-ACTUATED REBALANCING SERVO SYSTEM, A SERVO MECHANISM HAVING A NULL POSITION, DETECTOR MEANS TO PREVENT SIGNIFICANT PHASE, DELAY IN THE OPERATION OF SAID SERVO SYSTEM, SAID DETECTOR MEANS INCLUDING A PAIR OF OPPOSITELY-POLED, PARALLEL-CONNECTED DIODES, MEANS FOR APPLYING PULSE SIGNALS TO SAID DETECTOR MEANS HAVING A POLARITY REPRESENTING THE DIRECTION OF DISPLACEMENT OF THE SERVO MECHANISM FROM THE NULL POSITION, MEANS FOR RESTORING THE SERVO MECHANISM TO ITS NULL POSITION, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID DETECTOR MEANS FOR ACTUATING SAID RESTORING MEANS.
Claim 2
Dependent Claim
87 words
IN A PULSE-ACTUATED REBALANCING SERVO SYSTEM, A SERVO MECHANISM HAVING A NULL POSITION, DETECTOR MEANS TO PREVENT SIGNIFICANT PHASE, DELAY IN THE OPERATION OF SAID SERVO SYSTEM, SAID DETECTOR MEANS INCLUDING A PAIR OF OPPOSITELY-POLED, PARALLEL-CONNECTED DIODES, MEANS FOR APPLYING PULSE SIGNALS TO SAID DETECTOR MEANS HAVING A POLARITY REPRESENTING THE DIRECTION OF DISPLACEMENT OF THE SERVO MECHANISM FROM THE NULL POSITION, MEANS FOR RESTORING THE SERVO MECHANISM TO ITS NULL POSITION, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID DETECTOR MEANS FOR ACTUATING SAID RESTORING MEANS.
References Cited (Backward Citations)
US2335265A
Cited
US2467486A
Cited
US2500536A
Cited
US2990477A
Cited
US2940306A
Cited
US2956272A
Cited
US3028550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |