Patent US3287776A successfully refreshed from Google Patents.
Patent US3717836A successfully refreshed from Google Patents.
US3717836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical outlet means and fuse therefor
Assignee: MICRO DEVICES CORP
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Filing: 1971-04-06
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Granted: 1973-02-20
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Expires: 1991-04-06
Abstract
Abstract A self-contained electrical receptacle having a pair of terminals for respectively being interconnected to an electrical power source and having a pair of opening means for respectively receiving the prongs of an electrical plug of an electrically operated appliance or the like. The receptacle has a pair of lines respectively and electrically leading from the terminals to the opening means to be respectively and electrically interconnected together by the prongs of the plug. A fuse is disposed in one of the lines for opening that one line in a protecting manner when blown whereby the fuse when blown prevents electrical interconnection between the terminals through the opening means. The fuse is changeable through an opening in the receptacle adjacent the plug opening means thereof so that when the fuse is disposed in its opening, a part thereof will be overlapped by the plug when the plug is disposed in the opening means therefor whereby the fuse cannot be changed until the plug is removed from the electrical receptacle.
Inventors
- 👤 R Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:21
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/68
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
331 words
The combination of a self-contained electrical receptacle and a fuse, paid receptacle having a pair of terminals for respectively being adapted to be interconnected to an electrical power source, said receptacle having a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said receptacle having a pair of line means respectively and electrically leading from said terminals to said opening means to be respectively and effectively interconnected together by said prongs of said plug, and a fuse disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said terminals through said outlet, said fuse being insertable in and removable from said one line to permit fuse changing at said receptacle, said receptacle having an exposed surface provided with said opening means therein, said surface having means providing ready access to said fuse for changing thereof and the like, said means of said surface that provide ready access to said fuse comprising an opening in said surface spaced from the pair of openings and having a recessed extension disposed therebetween, said fuse being insertable in said opening to not only be disposed in said one line means, but also to close said opening of said surface, said fuse when closing said opening in said surface having a part thereof disposed in said recessed extension of said opening and being adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part postively orients said fuse in said one line means when said part is received in said opening.
Claim 2
Dependent Claim
331 words
The combination of a self-contained electrical receptacle and a fuse, paid receptacle having a pair of terminals for respectively being adapted to be interconnected to an electrical power source, said receptacle having a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said receptacle having a pair of line means respectively and electrically leading from said terminals to said opening means to be respectively and effectively interconnected together by said prongs of said plug, and a fuse disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said terminals through said outlet, said fuse being insertable in and removable from said one line to permit fuse changing at said receptacle, said receptacle having an exposed surface provided with said opening means therein, said surface having means providing ready access to said fuse for changing thereof and the like, said means of said surface that provide ready access to said fuse comprising an opening in said surface spaced from the pair of openings and having a recessed extension disposed therebetween, said fuse being insertable in said opening to not only be disposed in said one line means, but also to close said opening of said surface, said fuse when closing said opening in said surface having a part thereof disposed in said recessed extension of said opening and being adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part postively orients said fuse in said one line means when said part is received in said opening.
Claim 3
Dependent Claim
331 words
The combination of a self-contained electrical receptacle and a fuse, paid receptacle having a pair of terminals for respectively being adapted to be interconnected to an electrical power source, said receptacle having a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said receptacle having a pair of line means respectively and electrically leading from said terminals to said opening means to be respectively and effectively interconnected together by said prongs of said plug, and a fuse disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said terminals through said outlet, said fuse being insertable in and removable from said one line to permit fuse changing at said receptacle, said receptacle having an exposed surface provided with said opening means therein, said surface having means providing ready access to said fuse for changing thereof and the like, said means of said surface that provide ready access to said fuse comprising an opening in said surface spaced from the pair of openings and having a recessed extension disposed therebetween, said fuse being insertable in said opening to not only be disposed in said one line means, but also to close said opening of said surface, said fuse when closing said opening in said surface having a part thereof disposed in said recessed extension of said opening and being adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part postively orients said fuse in said one line means when said part is received in said opening.
Claim 4
Dependent Claim
331 words
The combination of a self-contained electrical receptacle and a fuse, paid receptacle having a pair of terminals for respectively being adapted to be interconnected to an electrical power source, said receptacle having a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said receptacle having a pair of line means respectively and electrically leading from said terminals to said opening means to be respectively and effectively interconnected together by said prongs of said plug, and a fuse disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said terminals through said outlet, said fuse being insertable in and removable from said one line to permit fuse changing at said receptacle, said receptacle having an exposed surface provided with said opening means therein, said surface having means providing ready access to said fuse for changing thereof and the like, said means of said surface that provide ready access to said fuse comprising an opening in said surface spaced from the pair of openings and having a recessed extension disposed therebetween, said fuse being insertable in said opening to not only be disposed in said one line means, but also to close said opening of said surface, said fuse when closing said opening in said surface having a part thereof disposed in said recessed extension of said opening and being adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part postively orients said fuse in said one line means when said part is received in said opening.
Claim 5
Dependent Claim
23 words
A combination as set forth in claim 1 wherein said part of said fuse extends transversely to a longitudinal axis of said fuse.
Claim 6
Dependent Claim
32 words
A combination as set forth in claim 1 wherein said one line means comprises a pair of contact members having contact portions disposed in spaced relation, said fuse bridging said contact portions.
Claim 7
Dependent Claim
19 words
A combination as set forth in claim 3 wherein one of said contact members defines one of said terminals.
Claim 8
Dependent Claim
33 words
A combination as set forth in claim 3 wherein one of said contact members has a portion leading to one of said opening means to be contacted by the plug prong received therein.
Claim 9
Dependent Claim
245 words
An electrical outlet means having a surface provided with a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said outlet means having a pair of line means respectively and electrically leading to said opening means to be respectively and effectively interconnected together by said prongs of said plug, said line means also being adapted to be interconnected to an electrical power source, said surface having an opening with a recessed extension disposed between said pair of openings therein, and a fuse disposed said recessed extension of in said opening and closing the same, said fuse having means disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said line means through said outlet, said fuse when closing said opening in said surface having a part thereof disposed in said opening and adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part positively orients said fuse in said one line means when said part is received in said opening.
Claim 10
Dependent Claim
245 words
An electrical outlet means having a surface provided with a pair of opening means for respectively being adapted to receive the prongs of an electrical plug of an electrically operated appliance or the like whereby said pair of opening means define a conventional electrical outlet, said outlet means having a pair of line means respectively and electrically leading to said opening means to be respectively and effectively interconnected together by said prongs of said plug, said line means also being adapted to be interconnected to an electrical power source, said surface having an opening with a recessed extension disposed between said pair of openings therein, and a fuse disposed said recessed extension of in said opening and closing the same, said fuse having means disposed in one of said line means for opening said one line means in a protecting manner when blown whereby said fuse when blown prevents electrical interconnection between said line means through said outlet, said fuse when closing said opening in said surface having a part thereof disposed in said opening and adapted to be overlapped by said plug when said plug is plugged into said outlet whereby said plug must be removed from said outlet before said fuse can be removed from said opening, said part of said fuse and said opening receiving the same being so constructed and arranged that said part positively orients said fuse in said one line means when said part is received in said opening.
References Cited (Backward Citations)
US1847172A
Cited
US2086861A
Cited
US2121127A
Cited
US2462934A
Cited
US2644056A
Cited
US2676223A
Cited
US2909630A
Cited
US2900475A
Cited
US3218414A
Cited
US3218413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |