US3219975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional remote radio control system
Assignee: Teledyne Ryan Aeronautical Corp
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Filing: 1962-12-07
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Granted: 1965-11-23
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Expires: 1982-12-07
Abstract
No abstract record available.
Inventors
- 👤 Rodger C Finvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0011; G05D1/0033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROPORTIONAL RADIO CONTROL SYSTEM FOR SELECTIVELY ACTUATING ANY ONE OF A PLURALITY OF CONTROL DEVICES BY THE CONJOINT ACTION OF AT LEAST TWO SIGNALS, COMPRISING: TRANSMITTER MEANS FOR GENERATING A RADIO FREQUENCY CARRIER; A PLURALITY OF TONE GENERATORS PROVIDING DIFFERENT AUDIO FREQUENCY SIGNALS; A SOURCE OF COMMON REFERENCE SIGNAL OF FIXED FREQUENCY; A PLURALITY OF CONTROL MEANS; PHASE SHIFTING MEANS CONNECTED BETWEEN SAID REFERENCE SIGNAL SOURCE AND EACH OF SAID CONTROL MEANS AND PROVIDING CONTROL SIGNALS OF IDENTICAL FREQUENCY TO SAID REFERENCE SIGNAL BUT IN DIFFERENT PHASE RELATIONSHIPS THERETO; MODULATING MEANS COUPLED EACH TO ONE OF SAID CONTROL MEANS AND ONE OF SAID TONE GENERATORS AND TO SAID REFERENCE SIGNAL SOURCE;
Claim 2
Dependent Claim
112 words
A PROPORTIONAL RADIO CONTROL SYSTEM FOR SELECTIVELY ACTUATING ANY ONE OF A PLURALITY OF CONTROL DEVICES BY THE CONJOINT ACTION OF AT LEAST TWO SIGNALS, COMPRISING: TRANSMITTER MEANS FOR GENERATING A RADIO FREQUENCY CARRIER; A PLURALITY OF TONE GENERATORS PROVIDING DIFFERENT AUDIO FREQUENCY SIGNALS; A SOURCE OF COMMON REFERENCE SIGNAL OF FIXED FREQUENCY; A PLURALITY OF CONTROL MEANS; PHASE SHIFTING MEANS CONNECTED BETWEEN SAID REFERENCE SIGNAL SOURCE AND EACH OF SAID CONTROL MEANS AND PROVIDING CONTROL SIGNALS OF IDENTICAL FREQUENCY TO SAID REFERENCE SIGNAL BUT IN DIFFERENT PHASE RELATIONSHIPS THERETO; MODULATING MEANS COUPLED EACH TO ONE OF SAID CONTROL MEANS AND ONE OF SAID TONE GENERATORS AND TO SAID REFERENCE SIGNAL SOURCE;
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |