US3441698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-type circuit interrupter
Assignee: General Electric Co
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Filing: 1966-10-03
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Granted: 1969-04-29
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Sofianek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:08
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/662; H01H33/66261; H01H2033/66292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A VACUUM-TYPE CIRCUIT INTERRUPTER COMPRISING: (A) A HIGHLY EVACUATED ENVELOPE COMPRISING A TUBULAR CASING PRIMARILY OF INSULATING MATERIAL, (B) A PAIR OF ELECTRODES WITHIN SAID CASING DEFINING AN ARCING GAP THEREBETWEEN ACROSS WHICH ARCS ARE ESTABLISHED DURING A CIRCUIT-INTERRUPTING OPERATION, (C) A MAIN VAPOR-CONDENSING METAL SHIELD OF TUBULAR FORM SURROUNDING SAID ARCING GAP AND EXTENDING LONGITUDINALLLY OF SAID TUBULAR CASING FOR SUBSTANTIAL DISTANCES ON OPPOSITE SIDES OF SAID GAP, (D) MEANS FOR MAINTAINING SAID MAIN SHIELD AT A POTENTIAL INTERMEDIATE THAT OF SAID ELECTRODES FOLLOWING INTERRUPTION, (E) A FIRST PAIR OF AUXILIARY METAL SHIELDS OF GENERALLY TUBULAR FORM RESPECTIVELY SURROUNDING THE ENDS OF SAID MAIN SHIELD AND SPACED RADIALLY OUTWARD THEREFROM, (F) MEANS FOR RESPECTIVELY ELECTRICALLY CONNECTING SAID AUXILIARY SHIELDS TO SAID ELECTRODES, (G) A PAIR OF ADDITIONAL AUXILIARY METAL SHIELDS OF GENERALLY TUBULAR FORM RESPECTIVELY SURROUNDED BY SAID MAIN SHIELD AT ITS OPPOSITE ENDS, (H) SAID ADDITIONAL AUXILIARY SHIELDS BEING SPACED RADIALLY INWARD FROM SAID MAIN SHIELD AND BEING ELECTRICALLY CONNECTED TO SAID ELECTRODES.
Claim 2
Dependent Claim
165 words
A VACUUM-TYPE CIRCUIT INTERRUPTER COMPRISING: (A) A HIGHLY EVACUATED ENVELOPE COMPRISING A TUBULAR CASING PRIMARILY OF INSULATING MATERIAL, (B) A PAIR OF ELECTRODES WITHIN SAID CASING DEFINING AN ARCING GAP THEREBETWEEN ACROSS WHICH ARCS ARE ESTABLISHED DURING A CIRCUIT-INTERRUPTING OPERATION, (C) A MAIN VAPOR-CONDENSING METAL SHIELD OF TUBULAR FORM SURROUNDING SAID ARCING GAP AND EXTENDING LONGITUDINALLLY OF SAID TUBULAR CASING FOR SUBSTANTIAL DISTANCES ON OPPOSITE SIDES OF SAID GAP, (D) MEANS FOR MAINTAINING SAID MAIN SHIELD AT A POTENTIAL INTERMEDIATE THAT OF SAID ELECTRODES FOLLOWING INTERRUPTION, (E) A FIRST PAIR OF AUXILIARY METAL SHIELDS OF GENERALLY TUBULAR FORM RESPECTIVELY SURROUNDING THE ENDS OF SAID MAIN SHIELD AND SPACED RADIALLY OUTWARD THEREFROM, (F) MEANS FOR RESPECTIVELY ELECTRICALLY CONNECTING SAID AUXILIARY SHIELDS TO SAID ELECTRODES, (G) A PAIR OF ADDITIONAL AUXILIARY METAL SHIELDS OF GENERALLY TUBULAR FORM RESPECTIVELY SURROUNDED BY SAID MAIN SHIELD AT ITS OPPOSITE ENDS, (H) SAID ADDITIONAL AUXILIARY SHIELDS BEING SPACED RADIALLY INWARD FROM SAID MAIN SHIELD AND BEING ELECTRICALLY CONNECTED TO SAID ELECTRODES.
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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |