US3215912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio controlled motor driven lifting and lowering device
Assignee: OPCO IND Inc
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Filing: 1962-07-16
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Granted: 1965-11-02
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C13/40; A; A63; A63B; A63B63/00; A63B63/08; A63B63/083; B66C2700/00; B66C2700/08; B66C2700/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A REMOTE CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF A LIFTING AND LOWERING DEVICE COMPRISING SELECTIVE SIGNAL RECEIVING MEANS FOR RECEIVING A MODULATED SIGNAL AND FOR PASSING A MODULATED SIGNAL OF A PREDETERMINED CARRIER FREQUENCY, A DEMODULATOR CONNECTED TO SAID SIGNAL RECEIVING MEANS FOR DEMODULATING SAID PASSING MODULATED SIGNAL OF SAID PREDETERMINED CARRIER FREQUENCY TO PRODUCE A LOWER OF FREQUENCY SIGNAL, AN AMPLIFIER FOR AMPLIFYING SAID LOWER FREQUENCY SIGNAL, A FIRST CAPACITOR FOR APPLYING A FIXED BIASING POTENTIAL TO SAID AMPLIFIER, MEANS FOR CHARGING SAID FIRST CAPACITOR TO SAID FIXED BIASING POTENTIAL, A SECOND CAPACITOR COUPLED TO SAID AMPLIFIER FOR RECEIVING THE AMPLIFIED FREQUENCY SIGNAL AND FOR REDUCING THE EFFECTIVE BIASING POTENTIAL ON SAID AMPLIFIER IN RESPONSE TO SAID LOWER FREQUENCY SIGNAL BEING OF A PREDETERMINED FREQUENCY, AND MEANS CONNECTED TO SAID AMPLIFIER AND ACTIVATED IN RESPONSE TO SAID AMPLIFIER HAVING THE EFFECTIVE BIASING POTENTIAL THEREON REDUCED FOR ACTUATING SAID LIFTING AND LOWER DEVICE.
Claim 2
Dependent Claim
154 words
A REMOTE CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF A LIFTING AND LOWERING DEVICE COMPRISING SELECTIVE SIGNAL RECEIVING MEANS FOR RECEIVING A MODULATED SIGNAL AND FOR PASSING A MODULATED SIGNAL OF A PREDETERMINED CARRIER FREQUENCY, A DEMODULATOR CONNECTED TO SAID SIGNAL RECEIVING MEANS FOR DEMODULATING SAID PASSING MODULATED SIGNAL OF SAID PREDETERMINED CARRIER FREQUENCY TO PRODUCE A LOWER OF FREQUENCY SIGNAL, AN AMPLIFIER FOR AMPLIFYING SAID LOWER FREQUENCY SIGNAL, A FIRST CAPACITOR FOR APPLYING A FIXED BIASING POTENTIAL TO SAID AMPLIFIER, MEANS FOR CHARGING SAID FIRST CAPACITOR TO SAID FIXED BIASING POTENTIAL, A SECOND CAPACITOR COUPLED TO SAID AMPLIFIER FOR RECEIVING THE AMPLIFIED FREQUENCY SIGNAL AND FOR REDUCING THE EFFECTIVE BIASING POTENTIAL ON SAID AMPLIFIER IN RESPONSE TO SAID LOWER FREQUENCY SIGNAL BEING OF A PREDETERMINED FREQUENCY, AND MEANS CONNECTED TO SAID AMPLIFIER AND ACTIVATED IN RESPONSE TO SAID AMPLIFIER HAVING THE EFFECTIVE BIASING POTENTIAL THEREON REDUCED FOR ACTUATING SAID LIFTING AND LOWER DEVICE.
References Cited (Backward Citations)
US2474527A
Cited
US2509345A
Cited
US3076935A
Cited
US2865634A
Cited
US2992378A
Cited
US3002140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |