Patent US2593529A successfully refreshed from Google Patents.
Patent US2953757A successfully refreshed from Google Patents.
US2953757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded epoxy current transformer
Assignee: ITE Circuit Breaker Co
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Filing: 1956-06-04
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Granted: 1960-09-20
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Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Charles J Yarrick
- 👤 John P Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:50
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A COMPLETELY INSULATED, SELF-SUPPORTING CURRENT TRANSFORMER HAVING NO METALLIC PARTS EXPOSED COMPRISING A CORE STRUCTURE CARRYING A SECONDARY WINDING, A FIRST AND SECOND PORTION OF SAID CORE STRUCTURE HAVING A FIRST AND SECOND FRAME MEMBER SECURED THERETO, SAID FIRST AND SECOND FRAME MEMBERS HAVING A RESPECTIVE EXTENDING BOSS OF INSULATING MATERIAL, SAID CORE STRUCTURE, SAID SECONDARY WINDING AND A PORTION OF SAID BOSSES BEING ENCAPSULATED IN AN EPOXY RESIN, SAID ENCAPSULATED CORE STRUCTURE HAVING AN OPENING THEREIN FOR RECEIVING A SINGLE TURN PRIMARY CONDUCTOR, SAID BOSSES BEING AT LEAST PARTIALLY EXPOSED FOR MOUNTING SAID CURRENT TRANSFORMER.
Claim 2
Dependent Claim
96 words
A COMPLETELY INSULATED, SELF-SUPPORTING CURRENT TRANSFORMER HAVING NO METALLIC PARTS EXPOSED COMPRISING A CORE STRUCTURE CARRYING A SECONDARY WINDING, A FIRST AND SECOND PORTION OF SAID CORE STRUCTURE HAVING A FIRST AND SECOND FRAME MEMBER SECURED THERETO, SAID FIRST AND SECOND FRAME MEMBERS HAVING A RESPECTIVE EXTENDING BOSS OF INSULATING MATERIAL, SAID CORE STRUCTURE, SAID SECONDARY WINDING AND A PORTION OF SAID BOSSES BEING ENCAPSULATED IN AN EPOXY RESIN, SAID ENCAPSULATED CORE STRUCTURE HAVING AN OPENING THEREIN FOR RECEIVING A SINGLE TURN PRIMARY CONDUCTOR, SAID BOSSES BEING AT LEAST PARTIALLY EXPOSED FOR MOUNTING SAID CURRENT TRANSFORMER.
References Cited (Backward Citations)
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |