US3811104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for electrical outlets
Assignee: Individual
•
Filing: 1972-03-08
•
Granted: 1974-05-14
•
Expires: 1992-03-08
Abstract
Abstract A safety device for electrical outlets which comprises an attachment for retaining electrical plugs in the sockets of a receptacle so as to preclude the inadvertent removal thereof as well as the insertion of foreign objects into the receptacles. Moreover, the present safety attachment is further adapted to provide the same safety feature in the event that only one electrical plug is mounted in a duplex receptacle in which instance the unused socket is covered to prevent the insertion of foreign objects.
Inventors
- 👤 T Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6395
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
An attachment for an electrical outlet of the type that includes a receptacle forming spaced sockets, a cover and a cover mounting hole intermediate said sockets, said attachment comprising a unitary plug retaining plate formed with spaced protrusions forming an open-ended slot for overlying a plug mounted in one of said sockets and a plate mounting hole aligned with said cover mounting hole in said receptacle; and a threaded element extended through said plate mounting hole and said cover and in threaded engagement with said cover mounting hole in said receptacle.
Claim 2
Dependent Claim
91 words
An attachment for an electrical outlet of the type that includes a receptacle forming spaced sockets, a cover and a cover mounting hole intermediate said sockets, said attachment comprising a unitary plug retaining plate formed with spaced protrusions forming an open-ended slot for overlying a plug mounted in one of said sockets and a plate mounting hole aligned with said cover mounting hole in said receptacle; and a threaded element extended through said plate mounting hole and said cover and in threaded engagement with said cover mounting hole in said receptacle.
Claim 3
Dependent Claim
31 words
The attachment defined in claim 1 wherein said plug retaining plate includes a second set of spaced unitary protrusions for overlying a second plug mounted in the other of said sockets.
Claim 4
Dependent Claim
116 words
An attachment for an electrical outlet of the type that includes a receptacle forming spaced sockets and a cover mounting hole intermediate said sockets, said attachment comprising a unitary plug retaining plate formed with spaced protrusions for overlying a plug mounted in one of said sockets and a plate mounting hole aligned with said cover mounting hole in said receptacle; and a threaded element extended through said plate mounting hole and in threaded engagement with said cover mounting hole in said receptacle, said plug retaining plate including a unitary socket covering portion for directly overlying the other of said sockets when empty, and a central offset portion between said spaced protrusions and said socket covering portion.
Claim 5
Dependent Claim
116 words
An attachment for an electrical outlet of the type that includes a receptacle forming spaced sockets and a cover mounting hole intermediate said sockets, said attachment comprising a unitary plug retaining plate formed with spaced protrusions for overlying a plug mounted in one of said sockets and a plate mounting hole aligned with said cover mounting hole in said receptacle; and a threaded element extended through said plate mounting hole and in threaded engagement with said cover mounting hole in said receptacle, said plug retaining plate including a unitary socket covering portion for directly overlying the other of said sockets when empty, and a central offset portion between said spaced protrusions and said socket covering portion.
References Cited (Backward Citations)
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Cited
US2675530A
Cited
US2659059A
Cited
US2716225A
Cited
US3159446A
Cited
US3363216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |