US4679873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical plug lock
Assignee: Individual
•
Filing: 1986-09-08
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Granted: 1987-07-14
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Expires: 2006-09-08
Abstract
Abstract An electric plug lock is provided for preventing the unauthorized use of an electrically operated appliance which has an electrical cord and plug. It operates by isolating the electrical prongs of the plug in a two part container and then locking the parts together with a conventional padlock.
Inventors
- 👤 John R. Brackett, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:16
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6397
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
An electrical plug lock for security purposes which comprises: (a) a housing for containing an electrical plug having a first open end and a second closed end with a through bore in said second closed end; (b) a closure member which cooperatively fits together with said housing for capturing said electrical plug therein, wherein said closure member has a back portion having an elongated slot for receiving the cord of an electric plug and a tongue attached at a first end projecting from said back portion and having a hole at a second end; and (c) means for locking said housing together with said closure member whereby the removal of said electrical plug is prevented.
Claim 2
Dependent Claim
115 words
An electrical plug lock for security purposes which comprises: (a) a housing for containing an electrical plug having a first open end and a second closed end with a through bore in said second closed end; (b) a closure member which cooperatively fits together with said housing for capturing said electrical plug therein, wherein said closure member has a back portion having an elongated slot for receiving the cord of an electric plug and a tongue attached at a first end projecting from said back portion and having a hole at a second end; and (c) means for locking said housing together with said closure member whereby the removal of said electrical plug is prevented.
Claim 3
Dependent Claim
38 words
An electrical plug lock as recited in claim 1, wherein when said closure member is fitted together with said housing, said tongue passes through and out of said bore of said housing exposing said hole in said tongue.
Claim 4
Dependent Claim
48 words
An electric plug lock as recited in claim 1, wherein said means for locking said housing together with said closure member is accomplished by inserting a hasp of a lock through said exposed hole in said tongue when said closure member is cooperatively fitted together with said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |