Patent US3178544A successfully refreshed from Google Patents.
US3178544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch with arc extinction in air and with magnetic blasting
Assignee: BBC Brown Boveri AG Germany
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Filing: 1962-10-08
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Granted: 1965-04-13
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Mayer Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:02
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A CIRCUIT BREAKER OF THE MAGNETIC BLOW-OUT TYPE COMPRISING A PAIR OF LOAD CONTACTS, SAID LOAD CONTACTS BEING MOVABLE RELATIVE TO EACH OTHER IN A FIRST VERTICAL PLANE BETWEEN AN ENGAGED AND A DISENGAGED POSITION, A PAIR OF MAIN ARCING HORNS LOCATED IN SAID FIRST PLANE AND TO WHICH AN ARC ESTABLISHED UPON EISENGAGEMENT OF SAID LOAD CONTACTS IN INITIALLY TRANSFERRED, A PLURALITY OF ALTERNATELY ARRANGED FIRST AND SECOND ARC CHAMBERS LOCATED ABOVE SAID MAIN ARCING HORNS IN SIDE-BY-SIDE RELATION AND WHICH ARE ESTABLICHED BY A PLURALITY OF PARALLEL SPACED WALLS ORIENTED IN PARALLEL VERTICAL PLANES NORMAL TO SAID FIRST VERTICAL PLANE, A PAIR OF AUXILIARY ARCING HORNS LOCATED IN EACH OF SAID FIRST ARC CHAMBERS, EACH SAID PAIR OF AUXILILARY ARCING HORNS BEING LOCATED IN SPACED RELATION IN A PLANE PARALLEL WITH SAID WALLS WHICH ESTABLISH SAID ARC CHAMBER, AND A BLAST COIL LOCATED IN EACH OF SAID SECOND ARC CHAMBERS, SAID BLAST COILS AND SAID AUXILIARY ARCING HORNS BEING CONNECTED ELECTRICALLY IN SERIES BY THE ARC ESTABLISHED BETWEEN SAID PAIR OF MAIN ARCING HORNS.
Claim 2
Dependent Claim
176 words
A CIRCUIT BREAKER OF THE MAGNETIC BLOW-OUT TYPE COMPRISING A PAIR OF LOAD CONTACTS, SAID LOAD CONTACTS BEING MOVABLE RELATIVE TO EACH OTHER IN A FIRST VERTICAL PLANE BETWEEN AN ENGAGED AND A DISENGAGED POSITION, A PAIR OF MAIN ARCING HORNS LOCATED IN SAID FIRST PLANE AND TO WHICH AN ARC ESTABLISHED UPON EISENGAGEMENT OF SAID LOAD CONTACTS IN INITIALLY TRANSFERRED, A PLURALITY OF ALTERNATELY ARRANGED FIRST AND SECOND ARC CHAMBERS LOCATED ABOVE SAID MAIN ARCING HORNS IN SIDE-BY-SIDE RELATION AND WHICH ARE ESTABLICHED BY A PLURALITY OF PARALLEL SPACED WALLS ORIENTED IN PARALLEL VERTICAL PLANES NORMAL TO SAID FIRST VERTICAL PLANE, A PAIR OF AUXILIARY ARCING HORNS LOCATED IN EACH OF SAID FIRST ARC CHAMBERS, EACH SAID PAIR OF AUXILILARY ARCING HORNS BEING LOCATED IN SPACED RELATION IN A PLANE PARALLEL WITH SAID WALLS WHICH ESTABLISH SAID ARC CHAMBER, AND A BLAST COIL LOCATED IN EACH OF SAID SECOND ARC CHAMBERS, SAID BLAST COILS AND SAID AUXILIARY ARCING HORNS BEING CONNECTED ELECTRICALLY IN SERIES BY THE ARC ESTABLISHED BETWEEN SAID PAIR OF MAIN ARCING HORNS.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |