Patent US3003464A successfully refreshed from Google Patents.
Patent US5303113A successfully refreshed from Google Patents.
US5303113A
Expired / Lapsed
US
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Digital circuit interrupter with RFI and EMI shielding
Assignee: General Electric Co
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Filing: 1992-03-30
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Granted: 1994-04-12
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Expires: 2012-03-30
Abstract
Abstract A digital circuit interrupter containing radio frequency sensitive electronic equipment employs an electrically-insulative enclosure having a conductive coating on the exterior surface. The enclosure is inserted within the circuit interrupter enclosure during automated assembly of the circuit interrupter components.
Inventors
- 👤 Ira B. Goleman
- 👤 Mark S. DeBiasi
- 👤 Edward R. Bednarik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:25
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0066; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/123; H01H2239/00; H01H2239/004
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
An electronic circuit interrupter having RFI-EMI shielding comprising: a molded plastic circuit breaker cover and case secured together to form an enclosure for a circuit interrupter operating mechanism; a pair of contacts within said enclosure arranged for automatic separation upon actuation of said operating mechanism; an electronic trip unit within said enclosure interacting with said operating mechanism, said electronic trip unit articulating said operating mechanism upon occurrence of an overcurrent condition of predetermined magnitude and duration; and an RFI-EMI filter partially encompassing said electronic trip unit providing shielding to electronic components contains therein, said RFI-EMI filter comprising a self-contained insulative enclosure defining an interior bottom surface facing said electronic components, and an exterior bottom surface facing away from said components, said exterior bottom surface including electrically-conductive material.
Claim 2
Dependent Claim
127 words
An electronic circuit interrupter having RFI-EMI shielding comprising: a molded plastic circuit breaker cover and case secured together to form an enclosure for a circuit interrupter operating mechanism; a pair of contacts within said enclosure arranged for automatic separation upon actuation of said operating mechanism; an electronic trip unit within said enclosure interacting with said operating mechanism, said electronic trip unit articulating said operating mechanism upon occurrence of an overcurrent condition of predetermined magnitude and duration; and an RFI-EMI filter partially encompassing said electronic trip unit providing shielding to electronic components contains therein, said RFI-EMI filter comprising a self-contained insulative enclosure defining an interior bottom surface facing said electronic components, and an exterior bottom surface facing away from said components, said exterior bottom surface including electrically-conductive material.
Claim 3
Dependent Claim
14 words
The circuit interrupter of claim 1 wherein said enclosure shaped to said rectangular configuration.
Claim 4
Dependent Claim
15 words
The circuit interrupter of claim 2 wherein said plastic is vacuum-formed to said rectangular configuration.
Claim 5
Dependent Claim
14 words
The circuit interrupter of claim 1 wherein said electrically-conductive material comprises a metallic paint.
Claim 6
Dependent Claim
22 words
The circuit interrupter of claim 4 wherein said metallic paint is selected from the group consisting of aluminum, copper, nickel and silver.
Claim 7
Dependent Claim
114 words
An electronic circuit interrupter having RFI-EMI shielding comprising in combination: a molded plastic circuit interrupter case and cover; circuit interruption components contained within said circuit interrupter case; trip circuit components contained within said circuit interrupter cover interacting with said interruption components to interrupt circuit current upon occurrence of a circuit overload condition; and an RFI-EMI shield arranged within said circuit breaker cover under said trip circuit components, said RFI-EMI shield comprising a self-contained plastic enclosure containing an interior bottom surface, an exterior bottom surface, opposing sidewalls and opposing endwalls said exterior bottom surface including a coating of conductive metal, said endwalls and said sidewalls including a coating of conductive metal on exterior surfaces thereof.
Claim 8
Dependent Claim
114 words
An electronic circuit interrupter having RFI-EMI shielding comprising in combination: a molded plastic circuit interrupter case and cover; circuit interruption components contained within said circuit interrupter case; trip circuit components contained within said circuit interrupter cover interacting with said interruption components to interrupt circuit current upon occurrence of a circuit overload condition; and an RFI-EMI shield arranged within said circuit breaker cover under said trip circuit components, said RFI-EMI shield comprising a self-contained plastic enclosure containing an interior bottom surface, an exterior bottom surface, opposing sidewalls and opposing endwalls said exterior bottom surface including a coating of conductive metal, said endwalls and said sidewalls including a coating of conductive metal on exterior surfaces thereof.
Claim 9
Dependent Claim
12 words
The circuit interrupter of claim 6 wherein said plastic enclosure is vacuum-formed.
Claim 10
Dependent Claim
22 words
The circuit interrupter of claim 6 wherein said conductive metal is selected from the group consisting of aluminum, copper, nickel and silver.
Claim 11
Dependent Claim
13 words
The circuit interrupter of claim 6 wherein said conductive metal comprises metallic paint.
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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) | 1997-04-11 | 1997-10-11 | 1998-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-11 | 2001-10-11 | 2002-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-11 | 2005-10-11 | 2006-04-12 | $7700.00 | Window Closed / Lapsed |