US3090959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote door controller
Assignee: Dalton Foundries Inc
•
Filing: 1956-08-06
•
Granted: 1963-05-21
•
Expires: 1976-08-06
Abstract
No abstract record available.
Inventors
- 👤 George H Marmont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:01
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN REMOTE CONTROL FOR A DOOR ACTUATING DEVICE, A CONTROL SIGNAL TRANSMITTER, COMPRISING: A SOURCE OF DIRECT CURRENT POTENTIAL INCLUDING SWITCHING MEANS; OSCILLATOR MEANS INCLUDING AN ELECTRONIC DEVICE HAVING AN OUTPUT CIRCUIT CONNECTION WITH SAID POTENTIAL SOURCE, AND A CONTROL CIRCUIT; A PLURALITY OF TANK CIRCUIT RESPECTIVELY TUNABLE TO DIFFERENT FREQUENCIES; AN ANTENNA COUPLED WITH SAID ELECTRONIC DEVICE; AND CONTACTS ALTERNATELY ACTUATED BY SAID SWITCHING MEANS AT A PREDETERMINED FIXED FREQUENCY RATE FOR SUCCESSIVELY CONNECTING SAID TANK CIRCUITS INTO THE CONTROL CIRCUIT OF SAID ELECTRONIC DEVICE TO CAUSE ALTERNATE OSCILLATION PERIODS OF SAID OSCILLATOR MEANS AT EACH OF SAID FREQUENCIES, THE CHANGE FROM ONE FREQUENCY TO THE OTHER BEING AT SAID PREDETERMINED FIXED RATE.
Claim 2
Dependent Claim
114 words
IN REMOTE CONTROL FOR A DOOR ACTUATING DEVICE, A CONTROL SIGNAL TRANSMITTER, COMPRISING: A SOURCE OF DIRECT CURRENT POTENTIAL INCLUDING SWITCHING MEANS; OSCILLATOR MEANS INCLUDING AN ELECTRONIC DEVICE HAVING AN OUTPUT CIRCUIT CONNECTION WITH SAID POTENTIAL SOURCE, AND A CONTROL CIRCUIT; A PLURALITY OF TANK CIRCUIT RESPECTIVELY TUNABLE TO DIFFERENT FREQUENCIES; AN ANTENNA COUPLED WITH SAID ELECTRONIC DEVICE; AND CONTACTS ALTERNATELY ACTUATED BY SAID SWITCHING MEANS AT A PREDETERMINED FIXED FREQUENCY RATE FOR SUCCESSIVELY CONNECTING SAID TANK CIRCUITS INTO THE CONTROL CIRCUIT OF SAID ELECTRONIC DEVICE TO CAUSE ALTERNATE OSCILLATION PERIODS OF SAID OSCILLATOR MEANS AT EACH OF SAID FREQUENCIES, THE CHANGE FROM ONE FREQUENCY TO THE OTHER BEING AT SAID PREDETERMINED FIXED RATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |