US3089948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1952-02-21
•
Granted: 1963-05-14
•
Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Stadum
- 👤 Hubert W Van Ness
- 👤 Edward C Hartwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:03
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
APPARATUS FOR CONTROLLING THE POLARITY OF CURRENT FLOW FROM A SUPPLY THROUGH A LOAD TO WHICH CURRENT PULSES OF OPPOSITE POLARITY ARE SUPPLIED IN SUCCESSION, COMPRISING, IN COMBINATION, REVERSING MEANS INTERPOSED BETWEEN SAID SUPPLY AND SAID LOAD, SAID REVERSING MEANS BEING OPERABLE FROM ONE POSITION IN WHICH IT PERMITS CURRENT OF ONE POLARITY OF FLOW THROUGH SAID LOAD TO ANOTHER POSITION IN WHICH IT PERMITS CURRENT OF THE OPPOSITE POLARITY OF FLOW THROUGH SAID FLOW, MEANS, INCLUDING A LATCHING RELAY, RESPONSIVE TO A FIRST EVENT FOR CONDITIONING SAID REVERSING MEANS TO BE ACTUATED FROM SAID ONE POSITION TO THE SAID OTHER POSITION, AND MEANS RESPONSIVE TO A SECOND EVENT FOR ACTUATING SAID REVERSING MEANS, FROM SAID FIRST POSITION TO SAID SECOND POSITION, AFTER IT HAS BEEN SO CONDITIONED.
Claim 2
Dependent Claim
128 words
APPARATUS FOR CONTROLLING THE POLARITY OF CURRENT FLOW FROM A SUPPLY THROUGH A LOAD TO WHICH CURRENT PULSES OF OPPOSITE POLARITY ARE SUPPLIED IN SUCCESSION, COMPRISING, IN COMBINATION, REVERSING MEANS INTERPOSED BETWEEN SAID SUPPLY AND SAID LOAD, SAID REVERSING MEANS BEING OPERABLE FROM ONE POSITION IN WHICH IT PERMITS CURRENT OF ONE POLARITY OF FLOW THROUGH SAID LOAD TO ANOTHER POSITION IN WHICH IT PERMITS CURRENT OF THE OPPOSITE POLARITY OF FLOW THROUGH SAID FLOW, MEANS, INCLUDING A LATCHING RELAY, RESPONSIVE TO A FIRST EVENT FOR CONDITIONING SAID REVERSING MEANS TO BE ACTUATED FROM SAID ONE POSITION TO THE SAID OTHER POSITION, AND MEANS RESPONSIVE TO A SECOND EVENT FOR ACTUATING SAID REVERSING MEANS, FROM SAID FIRST POSITION TO SAID SECOND POSITION, AFTER IT HAS BEEN SO CONDITIONED.
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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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |