Patent US3281701A successfully refreshed from Google Patents.
US3281701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency sensitive discriminator system
Assignee: Bunker Ramo Corp
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Filing: 1963-11-27
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Granted: 1966-10-25
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Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Joel H Axe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:13
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A FREQUENCY SENSITIVE SYSTEM COMPRISING: FIRST CIRCUIT MEANS HAVING A FIRST FREQUENCY PASSBAND AND RESPONSIVE TO AN ALTERNATING CURRENT INPUT SIGNAL FOR PRODUCING A FIRST SIGNAL WITH A FREQUENCY OF SAID INPUT SIGNAL IS WITHIN SAID FIRST FREQUENCY PASSBAND; SECOND CIRCUIT MEANS HAVING A SECOND FREQUENCY PASSBAND AND RESPONSIVE TO SAID INPUT SIGNAL FOR PRODUCING A SECOND SIGNAL WHEN SAID FREQUENCY OF SAID INPUT SIGNAL IS WITHIN SAID SECOND FREQUENCY PASSBAND; RECTIFYING MEANS FOR RECTIFYING SAID FIRST SIGNAL TO PRODUCE A FIRST RECTIFIED SIGNAL OF POSITIVE POLARITY AND FOR RECTIFYING SAID SECOND SIGNAL TO PRODUCE A SECOND RECTIFIED SIGNAL OF NEGATIVE POLARITY, ADDING MEANS FOR ADDING SAID FIRST RECTIFIED SIGNAL AND SAID SECOND RECTIFIED SIGNAL TO PRODUCE A SUMMATION SIGNAL; MEANS RESPONSIVE TO SAID SUMMATION SIGNAL FOR PRODUCING A DIRECT CURRENT OUTPUT SIGNAL OF PREDETERMINED POLARITY WHOSE CHARACTERISTICS ARE FUNCTIONS OF SAID FIRST AND SECOND FREQUENCY PASSBANDS OF SAID FIRST AND SECOND CIRCUITS MEANS AND OF SAID FREQUENCY OF SAID ALTERNATING CURRENT INPUT SIGNAL; AND GATING MEANS RESPONSIVE TO SAID ALTERNATING CURRENT INPUT SIGNAL AND TO SAID DIRECT CURRENT OUTPUT SIGNAL FOR PRODUCING AN ALTERNATING CURRENT OUTPUT SIGNAL WHOSE CHARACTERISTICS ARE FUNCTIONS OF SAID FIRST AND SECOND FREQUENCY PASSBANDS OF SAID FIRST AND SECOND CIRCUIT MEANS AND SAID FREQUENCY OF SAID ALTERNATING CURRENT INPUT SIGNAL.
Claim 2
Dependent Claim
215 words
A FREQUENCY SENSITIVE SYSTEM COMPRISING: FIRST CIRCUIT MEANS HAVING A FIRST FREQUENCY PASSBAND AND RESPONSIVE TO AN ALTERNATING CURRENT INPUT SIGNAL FOR PRODUCING A FIRST SIGNAL WITH A FREQUENCY OF SAID INPUT SIGNAL IS WITHIN SAID FIRST FREQUENCY PASSBAND; SECOND CIRCUIT MEANS HAVING A SECOND FREQUENCY PASSBAND AND RESPONSIVE TO SAID INPUT SIGNAL FOR PRODUCING A SECOND SIGNAL WHEN SAID FREQUENCY OF SAID INPUT SIGNAL IS WITHIN SAID SECOND FREQUENCY PASSBAND; RECTIFYING MEANS FOR RECTIFYING SAID FIRST SIGNAL TO PRODUCE A FIRST RECTIFIED SIGNAL OF POSITIVE POLARITY AND FOR RECTIFYING SAID SECOND SIGNAL TO PRODUCE A SECOND RECTIFIED SIGNAL OF NEGATIVE POLARITY, ADDING MEANS FOR ADDING SAID FIRST RECTIFIED SIGNAL AND SAID SECOND RECTIFIED SIGNAL TO PRODUCE A SUMMATION SIGNAL; MEANS RESPONSIVE TO SAID SUMMATION SIGNAL FOR PRODUCING A DIRECT CURRENT OUTPUT SIGNAL OF PREDETERMINED POLARITY WHOSE CHARACTERISTICS ARE FUNCTIONS OF SAID FIRST AND SECOND FREQUENCY PASSBANDS OF SAID FIRST AND SECOND CIRCUITS MEANS AND OF SAID FREQUENCY OF SAID ALTERNATING CURRENT INPUT SIGNAL; AND GATING MEANS RESPONSIVE TO SAID ALTERNATING CURRENT INPUT SIGNAL AND TO SAID DIRECT CURRENT OUTPUT SIGNAL FOR PRODUCING AN ALTERNATING CURRENT OUTPUT SIGNAL WHOSE CHARACTERISTICS ARE FUNCTIONS OF SAID FIRST AND SECOND FREQUENCY PASSBANDS OF SAID FIRST AND SECOND CIRCUIT MEANS AND SAID FREQUENCY OF SAID ALTERNATING CURRENT INPUT SIGNAL.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |