Patent US3177401A successfully refreshed from Google Patents.
US3177401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current multiplier
Assignee: ABB Inc USA
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Filing: 1961-02-15
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Granted: 1965-04-06
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Challiss I Clausing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:55
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN COMBINATION, A PAIR OF COOPERATING CONTACTS OPERABLE BETWEEN AN ENGAGED AND A DISENGAGED POSITION, BLOWOUT COIL MEANS FOR SAID COOPERATING CONTACTS EXTINGUISHING AN ELECTRIC ARC FORMED BETWEEN SAID COOPERATING CONTACTS UPON SEPARATION THEREOF, CURRENT MULTIPLYING MEANS CONNECTED BETWEEN ONE OF SAID COOPERATING CONTACTS AND SAID BLOWOUT COIL MEANS FOR INCREASING THE CURRENT FLOW THROUGH SAID BLOWOUT MEANS TO AID SAID BLOWOUT COIL MEANS IN THE EXTINGUISHMENT OF AN ARC FORMED DURING THE SEPARATION OF SAID CONTACTS, SAID BLOWOUT COIL MEANS BEING ELECTRICALLY ISOLATED FROM SAID COOPERATING CONTACTS.
Claim 2
Dependent Claim
88 words
IN COMBINATION, A PAIR OF COOPERATING CONTACTS OPERABLE BETWEEN AN ENGAGED AND A DISENGAGED POSITION, BLOWOUT COIL MEANS FOR SAID COOPERATING CONTACTS EXTINGUISHING AN ELECTRIC ARC FORMED BETWEEN SAID COOPERATING CONTACTS UPON SEPARATION THEREOF, CURRENT MULTIPLYING MEANS CONNECTED BETWEEN ONE OF SAID COOPERATING CONTACTS AND SAID BLOWOUT COIL MEANS FOR INCREASING THE CURRENT FLOW THROUGH SAID BLOWOUT MEANS TO AID SAID BLOWOUT COIL MEANS IN THE EXTINGUISHMENT OF AN ARC FORMED DURING THE SEPARATION OF SAID CONTACTS, SAID BLOWOUT COIL MEANS BEING ELECTRICALLY ISOLATED FROM SAID COOPERATING CONTACTS.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |