US3348121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage synchronous switch
Assignee: AMF Inc
•
Filing: 1963-07-11
•
Granted: 1967-10-17
•
Expires: 1983-07-11
Abstract
No abstract record available.
Inventors
- 👤 Nanjundiah N Murthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:07
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A SWITCHING SYSTEM FOR SUPPLYING ADJUSTABLE AMOUNTS OF CURRENT FROM A HIGH VOLTAGE AC SUPPLY TO A LOAD WITHOUT INTERRUPTING A CURRENT CARRYING CIRCUIT, COMPRISING IN COMBINATION: A PAIR OF SWITCH CONTACTS COUPLED TO INTERRUPT ALL CURRENT FED TO SAID LOAD FROM SAID AC SUPPLY; SYNCHRONIZING MEANS COUPLED TO ACTUATE SAID PAIR OF SWITCH CONTACTS; SWITCH MEANS CONDITIONED TO PASS ALTERNATE HALF-CYCLES OF SAID AC SUPPLY COUPLED TO ENERGIZE SAID SYNCHRONIZING MEANS; AND ADJUSTABLE SWITCH ACTUATING MEANS COUPLED TO INHIBIT SAID SWITCH MEANS FOR PASSING TO SAID SYNCHRONIZING MEANS A DESIRED PORTION OF EACH OF SAID ALTERNATE HALF-CYCLES; WHEREBY SAID SWITCH CONTACTS OPEN ONLY AT THE END OF A HALF-CYCLE OF SAID AC SUPPLY WHEN THE CURRENT IN SAID CIRCUIT INTERRUPTED BY SAID CONTACTS IS SUBSTANTIALLY ZERO.
Claim 2
Dependent Claim
127 words
A SWITCHING SYSTEM FOR SUPPLYING ADJUSTABLE AMOUNTS OF CURRENT FROM A HIGH VOLTAGE AC SUPPLY TO A LOAD WITHOUT INTERRUPTING A CURRENT CARRYING CIRCUIT, COMPRISING IN COMBINATION: A PAIR OF SWITCH CONTACTS COUPLED TO INTERRUPT ALL CURRENT FED TO SAID LOAD FROM SAID AC SUPPLY; SYNCHRONIZING MEANS COUPLED TO ACTUATE SAID PAIR OF SWITCH CONTACTS; SWITCH MEANS CONDITIONED TO PASS ALTERNATE HALF-CYCLES OF SAID AC SUPPLY COUPLED TO ENERGIZE SAID SYNCHRONIZING MEANS; AND ADJUSTABLE SWITCH ACTUATING MEANS COUPLED TO INHIBIT SAID SWITCH MEANS FOR PASSING TO SAID SYNCHRONIZING MEANS A DESIRED PORTION OF EACH OF SAID ALTERNATE HALF-CYCLES; WHEREBY SAID SWITCH CONTACTS OPEN ONLY AT THE END OF A HALF-CYCLE OF SAID AC SUPPLY WHEN THE CURRENT IN SAID CIRCUIT INTERRUPTED BY SAID CONTACTS IS SUBSTANTIALLY ZERO.
References Cited (Backward Citations)
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |