Patent US5161886C1 successfully refreshed from Google Patents.
US3299334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control system using a pair of semiconductor switches to effect bidirectionalcurrent flow in a control device
Assignee: Zenith Electronics LLC
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Filing: 1963-11-14
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Granted: 1967-01-17
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Montaz A Ramadan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:11
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; H; H03; H03G; H03G1/00; H03G1/02; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A REMOTE CONTROL SYSTEM FOR SELECTIVELY UTILIZING SUPEAUDIBLE COMMAND SIGNALS OF DIFFERENT FREQUENCIES TO PERFORM PREDETERMINED CONTROL FUNCTIONS, SAID SYSTEM COMPRISING: A CONTROL DEVICE RESPONSIVE TO CURRENT FLOW IN A PREDETERMINED DIRECTION TO PERFORM A FIRST PREDETERMINED CONTROL FUNCTION AND RESPONSIVE TO CURRENT FLOW IN THE OPPOSITE DIRECTION TO PERFORM A SECOND, DIFFERENT, CONTROL FUNCTION; FIRST AND SECOND SEMICONDUCTOR SWITCHING DEVICES; MEANS INCLUDING ONLY ONE OF SAID SWITCHING DEVICES AND RESPONSIVE TO SAID COMMAND SIGNALS OF A PREDETERMINED FIRST FREQUENCY FOR ESTABLISHING CURRENT FLOW IN SAID CONTROL DEVICE IN SAID PREDETERMINED DIRECTION; AND MEANS INCLUDING BOTH OF SAID SWITCHING DEVICES AND RESPONSIVE TO SAID COMMAND SIGNALS OF A SECOND FREQUENCY, DIFFERENT THAN SAID FIRST FREQUENCY, FOR ESTABLISHING CURRENT FLOW IN SAID CONTROL DEVICE IN SAID OPPOSITE DIRECTION.
Claim 2
Dependent Claim
127 words
A REMOTE CONTROL SYSTEM FOR SELECTIVELY UTILIZING SUPEAUDIBLE COMMAND SIGNALS OF DIFFERENT FREQUENCIES TO PERFORM PREDETERMINED CONTROL FUNCTIONS, SAID SYSTEM COMPRISING: A CONTROL DEVICE RESPONSIVE TO CURRENT FLOW IN A PREDETERMINED DIRECTION TO PERFORM A FIRST PREDETERMINED CONTROL FUNCTION AND RESPONSIVE TO CURRENT FLOW IN THE OPPOSITE DIRECTION TO PERFORM A SECOND, DIFFERENT, CONTROL FUNCTION; FIRST AND SECOND SEMICONDUCTOR SWITCHING DEVICES; MEANS INCLUDING ONLY ONE OF SAID SWITCHING DEVICES AND RESPONSIVE TO SAID COMMAND SIGNALS OF A PREDETERMINED FIRST FREQUENCY FOR ESTABLISHING CURRENT FLOW IN SAID CONTROL DEVICE IN SAID PREDETERMINED DIRECTION; AND MEANS INCLUDING BOTH OF SAID SWITCHING DEVICES AND RESPONSIVE TO SAID COMMAND SIGNALS OF A SECOND FREQUENCY, DIFFERENT THAN SAID FIRST FREQUENCY, FOR ESTABLISHING CURRENT FLOW IN SAID CONTROL DEVICE IN SAID OPPOSITE DIRECTION.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |