Patent US3131013A successfully refreshed from Google Patents.
US3131013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex adapter with automatic grounding means
Assignee: Harvey Hubbell Inc
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Filing: 1959-07-06
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Granted: 1964-04-28
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:18
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/648; H01R31/00; H01R31/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
AN ADAPTER FOR AN UNGROUNDING ELECTRICAL RECEPTACLE FOR RENDERING THE RECEPTACLE USABLE WITH A GROUNDING ELECTRICAL CONNECTION WHICH INCLUDES A GROUNDING ELEMENT COMPRISING; A BODY OF ELECTRICAL INSULATION MATERIAL; A PAIR OF CONTACT BLADE ASSEMBLIES SUPPORTED BY SAID BODY; EACH OF SAID ASSEMBLIES COMPRISING A FEMALE CONTACT PORTION THAT IS ARRANGED TO RECEIVE A MALE CONTACT BLADE OF THE GROUNDING ELECTRICAL CONNECTION AND A MALE CONTACT PORTION WHICH IS ARRANGED TO BE INSERTED INTO A FEMALE CONTACT OF THE RECEPTACLE; AND GROUNDING MEANS ARRANGED TO CONNECT THE GROUNDING ELEMENT OF SAID GROUNDING ELECTRICAL CONNECTION TO A SOURCE OF GROUND INCLUDING A SECURING SCREW FOR MOUNTING THE ADAPTER ON THE RECEPTABLE THAT IS ARRANGED TO BE RECEIVED IN THE USUAL GROUNDED FACE PLATE SECURING SCREW RECEIVING MEANS OF THE RECEPTACLE FOR NORMALLY GROUNDING ITSELF AND THE REMAINDER OF SAID GROUNDING MEANS, A GROUNDING CONTACT THAT IS ARRANGED IN SAID BODY TO RECEIVE THE GROUNDING ELEMENT IF IT IS IN THE FORM OF A GROUNDING CONTACT, AND A SCREW-TYPE TERMINAL INCLUDING A FLAT BINDING PLATE PORTION AND A BINDING SCREW ADJUSTABLE MOUNTED THEREIN FOR RECEIVING THE GROUNDING
Claim 2
Dependent Claim
185 words
AN ADAPTER FOR AN UNGROUNDING ELECTRICAL RECEPTACLE FOR RENDERING THE RECEPTACLE USABLE WITH A GROUNDING ELECTRICAL CONNECTION WHICH INCLUDES A GROUNDING ELEMENT COMPRISING; A BODY OF ELECTRICAL INSULATION MATERIAL; A PAIR OF CONTACT BLADE ASSEMBLIES SUPPORTED BY SAID BODY; EACH OF SAID ASSEMBLIES COMPRISING A FEMALE CONTACT PORTION THAT IS ARRANGED TO RECEIVE A MALE CONTACT BLADE OF THE GROUNDING ELECTRICAL CONNECTION AND A MALE CONTACT PORTION WHICH IS ARRANGED TO BE INSERTED INTO A FEMALE CONTACT OF THE RECEPTACLE; AND GROUNDING MEANS ARRANGED TO CONNECT THE GROUNDING ELEMENT OF SAID GROUNDING ELECTRICAL CONNECTION TO A SOURCE OF GROUND INCLUDING A SECURING SCREW FOR MOUNTING THE ADAPTER ON THE RECEPTABLE THAT IS ARRANGED TO BE RECEIVED IN THE USUAL GROUNDED FACE PLATE SECURING SCREW RECEIVING MEANS OF THE RECEPTACLE FOR NORMALLY GROUNDING ITSELF AND THE REMAINDER OF SAID GROUNDING MEANS, A GROUNDING CONTACT THAT IS ARRANGED IN SAID BODY TO RECEIVE THE GROUNDING ELEMENT IF IT IS IN THE FORM OF A GROUNDING CONTACT, AND A SCREW-TYPE TERMINAL INCLUDING A FLAT BINDING PLATE PORTION AND A BINDING SCREW ADJUSTABLE MOUNTED THEREIN FOR RECEIVING THE GROUNDING
References Cited (Backward Citations)
US1179728A
Cited
US1268457A
Cited
US1857398A
Cited
US1878779A
Cited
US2067796A
Cited
US2484558A
Cited
US2779998A
Cited
US2743423A
Cited
DE949669C
Cited
US2749434A
Cited
US2792557A
Cited
US2966651A
Cited
US2911608A
Cited
US2872503A
Cited
US2986718A
Cited
US2970287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |