US3114904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm system
Assignee: Individual
•
Filing: 1962-08-13
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Granted: 1963-12-17
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Michael T Sliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:14
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/14; G08B13/1409; H; H01; H01R; H01R13/00; H01R13/62; H01R13/6205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN ALARM SYSTEM FOR PRECLUDING UNAUTHORIZED REMOVAL OF ELECTRICAL APPLIANCES COMPRISING AN OUTLET RECEPTACLE FOR A THREE PRONG PLUG, A SOLENOID COIL CARRIED BY SAID RECEPTACLE, A THREE WIRE ELECTRICAL CIRCUIT INCLUDING A GROUND WIRE FROM A SOURCE OF ELECTRICITY TO THE APPLIANCE, SAID SOLENOID COIL BEING CONNECTED IN ONE OF SAID WIRES WHEREBY CLOSURE OF SAID CIRCUIT ENERGIZES SAID SOLENOID, A MAGNETIC MEMBER IN THE MAGNETIC PATH OF SAID COIL, A CONNECTION BETWEEN THE GROUND WIRE OF SAID CIRCUIT AND SAID MAGNETIC MEMBER, A MAGNETIC WEIGHT POSITIONED BELOW SAID MEMBER AND HELD IN CONTACT THEREWITH WHEREIN SAID CIRCUIT IS CLOSED, A MOVABLE CONTACT BENEATH SAID WEIGHT, A FIXED CONTACT BENEATH SAID MOVABLE CONTACT, WHEREBY BREAKING OF SAID CIRCUIT WILL DE-ENERGIZE SAID SOLENOID CAUSING SAID WEIGHT TO FALL ON SAID MOVABLE CONTACT TO FORCE SAID MOVABLE CONTACT INTO ENGAGEMENT WITH SAID FIXED CONTACT, AND AN INDEPENDANT ALARM CIRCUIT CLOSABLE TO ACTUATE AN ALARM UPON ENGAGEMENT OF SAID MOVABLE AND FIXED CONTACTS.
Claim 2
Dependent Claim
161 words
AN ALARM SYSTEM FOR PRECLUDING UNAUTHORIZED REMOVAL OF ELECTRICAL APPLIANCES COMPRISING AN OUTLET RECEPTACLE FOR A THREE PRONG PLUG, A SOLENOID COIL CARRIED BY SAID RECEPTACLE, A THREE WIRE ELECTRICAL CIRCUIT INCLUDING A GROUND WIRE FROM A SOURCE OF ELECTRICITY TO THE APPLIANCE, SAID SOLENOID COIL BEING CONNECTED IN ONE OF SAID WIRES WHEREBY CLOSURE OF SAID CIRCUIT ENERGIZES SAID SOLENOID, A MAGNETIC MEMBER IN THE MAGNETIC PATH OF SAID COIL, A CONNECTION BETWEEN THE GROUND WIRE OF SAID CIRCUIT AND SAID MAGNETIC MEMBER, A MAGNETIC WEIGHT POSITIONED BELOW SAID MEMBER AND HELD IN CONTACT THEREWITH WHEREIN SAID CIRCUIT IS CLOSED, A MOVABLE CONTACT BENEATH SAID WEIGHT, A FIXED CONTACT BENEATH SAID MOVABLE CONTACT, WHEREBY BREAKING OF SAID CIRCUIT WILL DE-ENERGIZE SAID SOLENOID CAUSING SAID WEIGHT TO FALL ON SAID MOVABLE CONTACT TO FORCE SAID MOVABLE CONTACT INTO ENGAGEMENT WITH SAID FIXED CONTACT, AND AN INDEPENDANT ALARM CIRCUIT CLOSABLE TO ACTUATE AN ALARM UPON ENGAGEMENT OF SAID MOVABLE AND FIXED CONTACTS.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |