US3411476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-powered and controlled foghorn
Assignee: Warren & Boyd Service Co
•
Filing: 1966-01-24
•
Granted: 1968-11-19
•
Expires: 1986-01-24
Abstract
No abstract record available.
Inventors
- 👤 Sammie L Warren
- 👤 Jr Roscoe H Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:33
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN ACOUSTICAL SIGNAL DEVICE COMPRISING A SOURCE OF GAS UNDER PRESSURE; A GAS ACTUATED ACOUSTIC TRANSDUCER; A PAIR OF GAS GLOW PATHS EACH INTERCONNECTING SAID SOURCE AND SAID TRANSDUCER; PRIMARY AND SECONDARY SELECTIVELY ACTUABLE TIMER MEANS, EACH FOR CYCLICALLY PASSING AND BLOCKING FLOW OF PRESSURIZED GAS BETWEEN SAID SOURCE AND SAID TRANSDUCER BY A RESPECTIVE ONE OF SAID PAIR OF GAS FLOW PATHS; SWITCHING MEANS HAVING AT LEAST FIRST AND SECOND OPERATIVE STATES, FOR RENDERING SAID PRIMARY TIMER MEANS ACTUATED AND SAID SECONDARY TIMER MEANS UNACTUATED IN SAID FIRST OPERATIVE STATE AND FOR RENDERING SAID PRIMARY TIMER MEANS UNACTUATED AND SAID SECONDARY TIMER MEANS ACTUATED IN SAID SECOND OPERATIVE STATE; AND CONTROL MEANS RESPONSIVE TO FAILURE OF SAID TRANSDUCER TO BE ACTUATED FOR A PREDETERMINED PERIOD OF TIME FOR ACTUATING SAID SWITCHING MEANS TO SAID SECOND OPERATIVE STATE.
Claim 2
Dependent Claim
138 words
AN ACOUSTICAL SIGNAL DEVICE COMPRISING A SOURCE OF GAS UNDER PRESSURE; A GAS ACTUATED ACOUSTIC TRANSDUCER; A PAIR OF GAS GLOW PATHS EACH INTERCONNECTING SAID SOURCE AND SAID TRANSDUCER; PRIMARY AND SECONDARY SELECTIVELY ACTUABLE TIMER MEANS, EACH FOR CYCLICALLY PASSING AND BLOCKING FLOW OF PRESSURIZED GAS BETWEEN SAID SOURCE AND SAID TRANSDUCER BY A RESPECTIVE ONE OF SAID PAIR OF GAS FLOW PATHS; SWITCHING MEANS HAVING AT LEAST FIRST AND SECOND OPERATIVE STATES, FOR RENDERING SAID PRIMARY TIMER MEANS ACTUATED AND SAID SECONDARY TIMER MEANS UNACTUATED IN SAID FIRST OPERATIVE STATE AND FOR RENDERING SAID PRIMARY TIMER MEANS UNACTUATED AND SAID SECONDARY TIMER MEANS ACTUATED IN SAID SECOND OPERATIVE STATE; AND CONTROL MEANS RESPONSIVE TO FAILURE OF SAID TRANSDUCER TO BE ACTUATED FOR A PREDETERMINED PERIOD OF TIME FOR ACTUATING SAID SWITCHING MEANS TO SAID SECOND OPERATIVE STATE.
References Cited (Backward Citations)
US3223068A
Cited
US3336945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |