Patent US3218558A successfully refreshed from Google Patents.
US3218558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic control apparatus with bi-directional transducer
Assignee: Motorola Solutions Inc
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Filing: 1963-01-30
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Granted: 1965-11-16
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Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 William J Kieffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:38
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/16; H03J3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
SOUND REPRODUCING AND REMOTE CONTROL APPARATUS, INCLUDING IN COMBINATION, AN AUDIO TRANSDUCER, FIRST CIRCUIT MEANS FOR DRIVING SAID TRANSDUCER WITH AUDIO SIGNALS IN A GIVEN FREQUENCY RANGE SO THAT SUCH SIGNALS ARE REPRODUCED AS SOUND, SAID AUDIO TRANSDUCER BEING RESPONSIVE TO REMOTELY ORIGINATING WAVES OF SUPERSONIC FREQUENCY OUTSIDE OF SAID FREQUENCY RANGE OF PRODUCE ELECTRICAL SIGNALS OF THE SUPERSONIC FREQUENCY, A CONTROL CIRCUIT RESPONSIVE TO APPLIED ELECTRICAL SIGNALS OF THE SUPERSONIC FREQUENCY TO PERFORM A CONTROL FUNCTION IN SAID APPARATUS, AND SECOND CIRCUIT MEANS CONNECTING SAID AUDIO TRANSDUCER TO SAID CONTROL CIRCUIT FOR APPLYING THE ELECTRICAL SIGNALS OF SUPERSONIC FREQUENCY THERETO, WHEREBY SAID CONTROL MEANS MAY BE OPERATED IN RESPONSE TO RECEPTION OF SUPERSONIC WAVES BY SAID AUDIO TRANSDUCER SIMULTANEOUSLY WITH REPRODUCTION OF AUDIO SIGNALS BY SAID TRANSDUCER.
Claim 2
Dependent Claim
128 words
SOUND REPRODUCING AND REMOTE CONTROL APPARATUS, INCLUDING IN COMBINATION, AN AUDIO TRANSDUCER, FIRST CIRCUIT MEANS FOR DRIVING SAID TRANSDUCER WITH AUDIO SIGNALS IN A GIVEN FREQUENCY RANGE SO THAT SUCH SIGNALS ARE REPRODUCED AS SOUND, SAID AUDIO TRANSDUCER BEING RESPONSIVE TO REMOTELY ORIGINATING WAVES OF SUPERSONIC FREQUENCY OUTSIDE OF SAID FREQUENCY RANGE OF PRODUCE ELECTRICAL SIGNALS OF THE SUPERSONIC FREQUENCY, A CONTROL CIRCUIT RESPONSIVE TO APPLIED ELECTRICAL SIGNALS OF THE SUPERSONIC FREQUENCY TO PERFORM A CONTROL FUNCTION IN SAID APPARATUS, AND SECOND CIRCUIT MEANS CONNECTING SAID AUDIO TRANSDUCER TO SAID CONTROL CIRCUIT FOR APPLYING THE ELECTRICAL SIGNALS OF SUPERSONIC FREQUENCY THERETO, WHEREBY SAID CONTROL MEANS MAY BE OPERATED IN RESPONSE TO RECEPTION OF SUPERSONIC WAVES BY SAID AUDIO TRANSDUCER SIMULTANEOUSLY WITH REPRODUCTION OF AUDIO SIGNALS BY SAID TRANSDUCER.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |