US3369810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foul detector
Assignee: AMF Inc
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Filing: 1964-09-28
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Granted: 1968-02-20
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Day John Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:00
CPC Classifications
A; A63; A63D; A63D1/00; A63D1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
IN AN AUTOMATIC FOUL DETECTING AND INDICATING APPARATUS FOR USE WITH A BOWLING ALLEY, THE COMBINATION OF VISIBLE INDICATING MEANS; AUDIBLE INDICATING MEANS; A PHOTOELECTRIC TRANSDUCER CHARACTERIZED BY HAVING A LOW ELECTRICAL IMPEDANCE CONDITION WHEN SUBJECTED TO RADIANT ENERGY AND A HIGH IMPEDANCE CONDITION WHEN THE INCIDENT RADIANT ENERGY IS MARKEDLY REDUCED; A SOURCE OF RADIANT ENERGY FOR DIRECTING RADIANT ENERGY ACROSS THE BOWLING ALLEY TO SAID TRANSDUCER TO MAINTAIN SAID TRANSDUCER NORMALLY IN SAID LOW IMPEDANCE CONDITION; FIRST CIRCUIT MEANS HAVING A STABLE STATE AND AN UNSTABLE STATE, SAID FIRST CIRCUIT MEANS BEING CONNECTED TO OPERATE ONE OF SAID INDICATING MEANS WHEN IN SAID UNSTABLE STATE; A FIRST CIRCUIT PORTION INTERCONNECTING SAID FIRST CIRCUIT MEANS AND SAID TRANSDUCER, SAID FIRST CIRCUIT MEANS BEING OPERATIVE TO CONVERT FROM SAID STABLE STATE TO SAID UNSTABLE STATE IN RESPONSE TO CHANGE OF SAID TRANSDUCER FROM SAID LOW IMPEDENCE CONDITION TO SAID HIGH IMPEDANCE CONDITION AND TO REVERT TO SAID STABLE STATE AT THE END OF A FIRST PREDETERMINED TIME INTERVAL; SECOND CIRCUIT MEANS CONNECTED TO OPERATE THE OTHER OF SAID INDICATING MEANS; AND A SECOND CIRCUIT PORTION INTERCONNECTING SAID FIRST CIRCUIT MEANS AND SAID SECOND CIRCUIT MEANS, SAID SECOND CIRCUIT MEANS BEING RESPONSIVE TO CHANGE OF SAID FIRST CIRCUIT MEANS FROM SAID STABLE STATE TO SAID UNSTABLE STATE TO OPERATE SAID OTHER INDICATING MEANS FOR A SECOND PREDETERMINED TIME INTERVAL.
Claim 2
Dependent Claim
228 words
IN AN AUTOMATIC FOUL DETECTING AND INDICATING APPARATUS FOR USE WITH A BOWLING ALLEY, THE COMBINATION OF VISIBLE INDICATING MEANS; AUDIBLE INDICATING MEANS; A PHOTOELECTRIC TRANSDUCER CHARACTERIZED BY HAVING A LOW ELECTRICAL IMPEDANCE CONDITION WHEN SUBJECTED TO RADIANT ENERGY AND A HIGH IMPEDANCE CONDITION WHEN THE INCIDENT RADIANT ENERGY IS MARKEDLY REDUCED; A SOURCE OF RADIANT ENERGY FOR DIRECTING RADIANT ENERGY ACROSS THE BOWLING ALLEY TO SAID TRANSDUCER TO MAINTAIN SAID TRANSDUCER NORMALLY IN SAID LOW IMPEDANCE CONDITION; FIRST CIRCUIT MEANS HAVING A STABLE STATE AND AN UNSTABLE STATE, SAID FIRST CIRCUIT MEANS BEING CONNECTED TO OPERATE ONE OF SAID INDICATING MEANS WHEN IN SAID UNSTABLE STATE; A FIRST CIRCUIT PORTION INTERCONNECTING SAID FIRST CIRCUIT MEANS AND SAID TRANSDUCER, SAID FIRST CIRCUIT MEANS BEING OPERATIVE TO CONVERT FROM SAID STABLE STATE TO SAID UNSTABLE STATE IN RESPONSE TO CHANGE OF SAID TRANSDUCER FROM SAID LOW IMPEDENCE CONDITION TO SAID HIGH IMPEDANCE CONDITION AND TO REVERT TO SAID STABLE STATE AT THE END OF A FIRST PREDETERMINED TIME INTERVAL; SECOND CIRCUIT MEANS CONNECTED TO OPERATE THE OTHER OF SAID INDICATING MEANS; AND A SECOND CIRCUIT PORTION INTERCONNECTING SAID FIRST CIRCUIT MEANS AND SAID SECOND CIRCUIT MEANS, SAID SECOND CIRCUIT MEANS BEING RESPONSIVE TO CHANGE OF SAID FIRST CIRCUIT MEANS FROM SAID STABLE STATE TO SAID UNSTABLE STATE TO OPERATE SAID OTHER INDICATING MEANS FOR A SECOND PREDETERMINED TIME INTERVAL.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |