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US3397293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-clad switchgear employing vacuum type circuit interrupters
Assignee: General Electric Co
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Filing: 1965-08-13
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Granted: 1968-08-13
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Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Darrow
- 👤 Charles H Titus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H02; H02B; H02B11/00; H02B11/02; H02B11/04; H02B11/12; H02B11/167; H01H33/662; H01H33/66238; H01H2033/66246; H01H33/02; H01H33/022; H01H33/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN AN ELECTRIC SWITCHGEAR UNIT FOR CONTROLLING A THREEPHASE ALTERNATING CURRENT THAT COMPRISES THREE BUSES EXTENDING INTO SAID UNIT IN SPACED-APART RELATIONSHIP AND THREE LINE CONDUCTORS INSULATED FROM EACH OTHER AND ADAPTED TO BE ELECTRICALLY CONNECTED, RESPECTIVELY, TO SAID THREE BUSES, EACH OF SAID PHASES EXTENDING THROUGH ONE OF SAID BUSES AND AN ASSOCIATED ONE OF SAID LINE CONDUCTORS, SAID SWITCHGEAR UNIT COMPRISING: (A) THREE VERTICALLY-SPACED STATIONARY DISCONNECT CONTACTS RESPECTIVELY CONNECTED TO SAID THREE BUSES, (B) THREE ADDITIONAL VERTICALLY-SPACED STATIONARY DISCONNECT CONTACTS ADAPTED TO BE RESPECTIVELY CONNECTED TO SAID LINE CONDUCTORS, (E) MEANS FOR LOCATING THE PAIR OF SAID DISCONNECT CONTACTS THAT IS IN EACH PHASE OF SAID CIRCUIT IN HORIZONTALLY-SPACED RELATIONSHIP TO EACH OTHER,
Claim 2
Dependent Claim
115 words
IN AN ELECTRIC SWITCHGEAR UNIT FOR CONTROLLING A THREEPHASE ALTERNATING CURRENT THAT COMPRISES THREE BUSES EXTENDING INTO SAID UNIT IN SPACED-APART RELATIONSHIP AND THREE LINE CONDUCTORS INSULATED FROM EACH OTHER AND ADAPTED TO BE ELECTRICALLY CONNECTED, RESPECTIVELY, TO SAID THREE BUSES, EACH OF SAID PHASES EXTENDING THROUGH ONE OF SAID BUSES AND AN ASSOCIATED ONE OF SAID LINE CONDUCTORS, SAID SWITCHGEAR UNIT COMPRISING: (A) THREE VERTICALLY-SPACED STATIONARY DISCONNECT CONTACTS RESPECTIVELY CONNECTED TO SAID THREE BUSES, (B) THREE ADDITIONAL VERTICALLY-SPACED STATIONARY DISCONNECT CONTACTS ADAPTED TO BE RESPECTIVELY CONNECTED TO SAID LINE CONDUCTORS, (E) MEANS FOR LOCATING THE PAIR OF SAID DISCONNECT CONTACTS THAT IS IN EACH PHASE OF SAID CIRCUIT IN HORIZONTALLY-SPACED RELATIONSHIP TO EACH OTHER,
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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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |