Patent US3345485A successfully refreshed from Google Patents.
US3345485A
Expired / Lapsed
US
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Circuit breaker having improved arcing contact structure
Assignee: Federal Pacific Electric Co
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Filing: 1964-12-30
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Granted: 1967-10-03
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edward I Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:20
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/38; H01H9/383; H01H1/00; H01H1/50; H01H1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A CIRCUIT BREAKER INCLUDING FIRST AND SECOND TERMINAL MEMBERS, A MOVABLE MAIN CONTACT ARM, A PAIR OF RELATIVELY ELONGATED SLENDER RESILIENT ARCING CONTACT ARMS PIVOTALLY MOUNTED ON SAID MAIN CONTACT ARM, COMPANION MAIN CONTACTS AND A COMPANION ARCING CONTACT ELECTRICCALLY CONNECTED TO SAID FIRST TERMINAL MEMBER, MEANS PIVOTALLY MOUNTING SAID MAIN CONTACT ARM FOR MOVEMENT FROM A CLOSED POSITION WHEREIN SAID MAIN CONTACT ARM ABUTS SAID COMPANION MAIN CONTACTS AND SAID ARCING CONTACT ARMS STRADDLE SAID STATIONARY ARCING CONTACT AND ARE IN LATERAL FACE ENGAGEMENT THEREWITH TO AN OPEN POSITION, A DRIVING LINK CONNECTED TO SAID MAIN CONTACT ARM FOR MOVING SAID MAIN CONTACT ARM AND SAID ARCING CONTACT ARMS BETWEEN SAID OPEN POSITION AND SAID CLOSED POSITION, MEANS ELECTRICALLY CONNECTING SAID MAIN CONTACT ARM TO SAID SECOND TERMINAL MEMBER, SAID RESILIENT ARCING CONTACT ARMS BEING URGED TOWARD ONE ANOTHER AGAINST THE LATERAL FACES OF SAID COMPANION ARCING CONTACT TO ENHANCE THE CONTACT PRESSURE THEREBETWEEN BY ELECTRODYNAMIC FORCES DUE TO HIGH CURRENTS FLOWING THROUGH SAID ARCING CONTACT ARMS WHEN SAID MAIN CONTACTS PART.
Claim 2
Dependent Claim
173 words
A CIRCUIT BREAKER INCLUDING FIRST AND SECOND TERMINAL MEMBERS, A MOVABLE MAIN CONTACT ARM, A PAIR OF RELATIVELY ELONGATED SLENDER RESILIENT ARCING CONTACT ARMS PIVOTALLY MOUNTED ON SAID MAIN CONTACT ARM, COMPANION MAIN CONTACTS AND A COMPANION ARCING CONTACT ELECTRICCALLY CONNECTED TO SAID FIRST TERMINAL MEMBER, MEANS PIVOTALLY MOUNTING SAID MAIN CONTACT ARM FOR MOVEMENT FROM A CLOSED POSITION WHEREIN SAID MAIN CONTACT ARM ABUTS SAID COMPANION MAIN CONTACTS AND SAID ARCING CONTACT ARMS STRADDLE SAID STATIONARY ARCING CONTACT AND ARE IN LATERAL FACE ENGAGEMENT THEREWITH TO AN OPEN POSITION, A DRIVING LINK CONNECTED TO SAID MAIN CONTACT ARM FOR MOVING SAID MAIN CONTACT ARM AND SAID ARCING CONTACT ARMS BETWEEN SAID OPEN POSITION AND SAID CLOSED POSITION, MEANS ELECTRICALLY CONNECTING SAID MAIN CONTACT ARM TO SAID SECOND TERMINAL MEMBER, SAID RESILIENT ARCING CONTACT ARMS BEING URGED TOWARD ONE ANOTHER AGAINST THE LATERAL FACES OF SAID COMPANION ARCING CONTACT TO ENHANCE THE CONTACT PRESSURE THEREBETWEEN BY ELECTRODYNAMIC FORCES DUE TO HIGH CURRENTS FLOWING THROUGH SAID ARCING CONTACT ARMS WHEN SAID MAIN CONTACTS PART.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |