US3344313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load responsive ungrounded electrical distribution system
Assignee: SWEET DONALD
•
Filing: 1965-04-02
•
Granted: 1967-09-26
•
Expires: 1985-04-02
Abstract
No abstract record available.
Inventors
- 👤 Sr Arthur A Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/04; H02H; H02H3/00; H02H3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN AN ELECTRICAL DISTRIBUTION SYSTEM, THE COMBINATION WHICH COMPRISES A SOURCE OF ENERGIZING POWER, AN ISOLATION TRANSFORMER, A REMOTE LOAD CIRCUIT INCLUDING A LOAD DEVICE AND A SWITCH CONNECTED IN SERIES, THE SWITCH BEING OPERABLE TO CONDITION THE LOAD DEVICE FOR ENERGIZATION WHEN CLOSED AND TO CAUSE THE ENERGIZED LOAD DEVICE TO BE DEENERGIZED WHEN OPENED, MEANS INCLUDING A FIRST RELAY FOR CAUSING THE TRANSFORMER TO BE ASSOCIATED WITH THE SOURCE AND FOR CAUSING ENERGIZING CURRENT TO INITIALLY FLOW THROUGH THE LOAD DEVICE WHEN THE FIRST RELAY IS ENERGIZED, MEANS ASSOCIATED WITH THE SOURCE FOR CONTINUOUSLY PRODUCING A LOW VOLTAGE SIGNAL WHICH IS APPLIED TO THE FIRST RELAY THROUGH THE LOAD CIRCUIT WHEN THE SWITCH IS
Claim 2
Dependent Claim
116 words
IN AN ELECTRICAL DISTRIBUTION SYSTEM, THE COMBINATION WHICH COMPRISES A SOURCE OF ENERGIZING POWER, AN ISOLATION TRANSFORMER, A REMOTE LOAD CIRCUIT INCLUDING A LOAD DEVICE AND A SWITCH CONNECTED IN SERIES, THE SWITCH BEING OPERABLE TO CONDITION THE LOAD DEVICE FOR ENERGIZATION WHEN CLOSED AND TO CAUSE THE ENERGIZED LOAD DEVICE TO BE DEENERGIZED WHEN OPENED, MEANS INCLUDING A FIRST RELAY FOR CAUSING THE TRANSFORMER TO BE ASSOCIATED WITH THE SOURCE AND FOR CAUSING ENERGIZING CURRENT TO INITIALLY FLOW THROUGH THE LOAD DEVICE WHEN THE FIRST RELAY IS ENERGIZED, MEANS ASSOCIATED WITH THE SOURCE FOR CONTINUOUSLY PRODUCING A LOW VOLTAGE SIGNAL WHICH IS APPLIED TO THE FIRST RELAY THROUGH THE LOAD CIRCUIT WHEN THE SWITCH IS
References Cited (Backward Citations)
GB446299A
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US2114687A
Cited
GB487935A
Cited
GB679789A
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GB727966A
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GB764965A
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US3168682A
Cited
US3253188A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |