US3234535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined burglar and fire alarm device
Assignee: Individual
•
Filing: 1963-06-17
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Granted: 1966-02-08
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Fred J Schordine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:13
CPC Classifications
G; G08; G08B; G08B19/00; G08B19/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
AN ELECTRICAL PROTECTIVE ALARM COMPRISING A PANEL, A PLURALITY OF FIRST ELECTRICAL INDICATORS IN SERIES CONDUCTIVELY CONNECTED TO EACH OTHER AND MOUNTED ON SAID PANEL, A PLURALITY OF ELECTRICAL DETECTORS HAVING NORMALLY CLOSED CONTACTS AND BEING INSTALLED IN VARIOUS LOCATIONS TO BE PROTECTED, A FIRST PAIR OF WIRES PARALLEL CONDUCTIVELY CONNECTING EACH ONE OF SAID INDICATORS TO EACH ONE OF SAID DETECTORS, A FIRST CLOSED-CURRENT RELAY MOUNTED ON SAID PANEL AND HAVING A COIL, CONNECTING MEANS SERIALLY CONNECTING SAID COIL TO SAID INDICATORS, A FIRST ALARM CIRCUIT CONTROLLED BY A FIRST SET OF CONTACTS OF SAID FIRST RELAY AND BEING INTERRUPTED AS LONG AS SAID RELAY IS ENERGIZED, SAID CONNECTING MEANS INCLUDING A SECOND SET OF CONTACTS OF SAID FIRST RELAY, SAID SECOND SET OF CONTACTS ADAPTED TO OPEN WHEN SAID RELAY IS DEENERGIZED AT A PREDETERMINED VOLTAGE, A SECOND RELAY HAVING A COIL PARALLEL CONDUCTIVELY CONNECTED TO THE COIL OF SAID FIRST RELAY, AND A SECOND ALARM CIRCUIT CONNECTED TO SAID SECOND RELAY BEING INTERRUPTED BY THE SAME AS LONG AS THE RELAYS ARE FULLY ENERGIZED, EACH OF SAID ALARM CIRCUITS BEING CONDUCTIVELY CONNECTED TO A SEPARATE SOURCE OF ELECTRICAL CURRENT.
Claim 2
Dependent Claim
192 words
AN ELECTRICAL PROTECTIVE ALARM COMPRISING A PANEL, A PLURALITY OF FIRST ELECTRICAL INDICATORS IN SERIES CONDUCTIVELY CONNECTED TO EACH OTHER AND MOUNTED ON SAID PANEL, A PLURALITY OF ELECTRICAL DETECTORS HAVING NORMALLY CLOSED CONTACTS AND BEING INSTALLED IN VARIOUS LOCATIONS TO BE PROTECTED, A FIRST PAIR OF WIRES PARALLEL CONDUCTIVELY CONNECTING EACH ONE OF SAID INDICATORS TO EACH ONE OF SAID DETECTORS, A FIRST CLOSED-CURRENT RELAY MOUNTED ON SAID PANEL AND HAVING A COIL, CONNECTING MEANS SERIALLY CONNECTING SAID COIL TO SAID INDICATORS, A FIRST ALARM CIRCUIT CONTROLLED BY A FIRST SET OF CONTACTS OF SAID FIRST RELAY AND BEING INTERRUPTED AS LONG AS SAID RELAY IS ENERGIZED, SAID CONNECTING MEANS INCLUDING A SECOND SET OF CONTACTS OF SAID FIRST RELAY, SAID SECOND SET OF CONTACTS ADAPTED TO OPEN WHEN SAID RELAY IS DEENERGIZED AT A PREDETERMINED VOLTAGE, A SECOND RELAY HAVING A COIL PARALLEL CONDUCTIVELY CONNECTED TO THE COIL OF SAID FIRST RELAY, AND A SECOND ALARM CIRCUIT CONNECTED TO SAID SECOND RELAY BEING INTERRUPTED BY THE SAME AS LONG AS THE RELAYS ARE FULLY ENERGIZED, EACH OF SAID ALARM CIRCUITS BEING CONDUCTIVELY CONNECTED TO A SEPARATE SOURCE OF ELECTRICAL CURRENT.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |