Patent US3073926A successfully refreshed from Google Patents.
US3073926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
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Filing: 1959-10-16
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Granted: 1963-01-15
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Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
- 👤 James P Ellsworth
- 👤 Robert H Flick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:28
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/08; H01H71/10; H01H71/1009; H01H73/00; H01H73/02; H01H73/06; H01H73/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A MULTIPOLE CIRCUIT BREAKER COMPRISING, IN COMBINATION, A SET OF SEPARABLE CONTACTS FOR EACH POLE UNIT, LATCHED MEANS COMMON TO ALL OF SAID POLE UNITS AND RELEASABLE TO EFFECT AUTOMATIC SEPARATION OF ALL OF SAID SETS OF CONTACTS, A METALLIC PIVOT SUPPORTED AT EACH SIDE OF SAID CIRCUIT BREAKER, A COMMON TRIP MEMBER PIVOTALLY SUPPORTED BY SAID METALLIC PIVOTS AND LATCHING SAID LATCHED RELEASABLE MEANS, MEANS BIASING SAID COMMON TRIP MEMBER TO A LATCHING POSITION, SAID COMMON TRIP MEMBER COMPRISING AN ARMATURE FOR EACH OF SAID POLE UNITS AND INSULATING MEANS RIGIDLY CONNECTING SAID ARMATURES, PORTIONS OF THE OUTER OF SAID ARMATURES ENGAGING IN SAID METALLIC PIVOTS TO PIVOTALLY SUPPORT SAID COMMON TRIP MEMBER, MAGNETIC MEANS FOR EACH OF SAID POLE UNITS ASSOCIATED WITH EACH OF SAID ARMATURES, AND THE MAGNETIC MEANS FOR ANY ONE OF SAID POLE UNITS UPON ENERGIZATION BY AN OVERLOAD CURRENT ABOVE A PREDETERMINED VALUE ATTRACTING THE ARMATURE ASSOCIATED THEREWITH CAUSING SAID COMMON TRIP MEMBER TO PIVOT AGAINST THE BIAS OF SAID BIASING MEANS TO RELEASE SAID LATCHED RELEASABLE MEANS.
Claim 2
Dependent Claim
174 words
A MULTIPOLE CIRCUIT BREAKER COMPRISING, IN COMBINATION, A SET OF SEPARABLE CONTACTS FOR EACH POLE UNIT, LATCHED MEANS COMMON TO ALL OF SAID POLE UNITS AND RELEASABLE TO EFFECT AUTOMATIC SEPARATION OF ALL OF SAID SETS OF CONTACTS, A METALLIC PIVOT SUPPORTED AT EACH SIDE OF SAID CIRCUIT BREAKER, A COMMON TRIP MEMBER PIVOTALLY SUPPORTED BY SAID METALLIC PIVOTS AND LATCHING SAID LATCHED RELEASABLE MEANS, MEANS BIASING SAID COMMON TRIP MEMBER TO A LATCHING POSITION, SAID COMMON TRIP MEMBER COMPRISING AN ARMATURE FOR EACH OF SAID POLE UNITS AND INSULATING MEANS RIGIDLY CONNECTING SAID ARMATURES, PORTIONS OF THE OUTER OF SAID ARMATURES ENGAGING IN SAID METALLIC PIVOTS TO PIVOTALLY SUPPORT SAID COMMON TRIP MEMBER, MAGNETIC MEANS FOR EACH OF SAID POLE UNITS ASSOCIATED WITH EACH OF SAID ARMATURES, AND THE MAGNETIC MEANS FOR ANY ONE OF SAID POLE UNITS UPON ENERGIZATION BY AN OVERLOAD CURRENT ABOVE A PREDETERMINED VALUE ATTRACTING THE ARMATURE ASSOCIATED THEREWITH CAUSING SAID COMMON TRIP MEMBER TO PIVOT AGAINST THE BIAS OF SAID BIASING MEANS TO RELEASE SAID LATCHED RELEASABLE MEANS.
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |