Patent US4812131A successfully refreshed from Google Patents.
US4812131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical plug lock apparatus
Assignee: Individual
•
Filing: 1988-03-23
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Granted: 1989-03-14
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Expires: 2008-03-23
Abstract
Abstract A lock apparatus (10) for an electrical plug (100) wherein the lock apparatus comprises a housing unit (11) provided with an elongated slot (25') and containing a key actuated lock mechanism (70) which cooperates with a plug capturing member (80) which is slideably disposed in the elongated slot (25'); wherein, the capturing member (80) is provided with capturing arms (83) which are adapted to engage the rear of the electrical plug (100).
Inventors
- 👤 Terry L. Sieverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:51
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6392
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
A lock apparatus for use in combination with an electrical cord and a plug having prongs wherein the lock apparatus comprises: a housing unit comprising a generally rectangular housing member including a lower base portion; an upper plug receiving portion; an upper lock receiving portion; and, an elongated generally rectangular slot which extends through said housing member; and, a locking unit comprising a key actuated locking mechanism which is disposed in the upper lock receiving portion of the housing unit and provided with a latch detent that is adapted to extend into said generally elongated rectangular slot in the housing unit; and, a plug capture member including an elongated male stem element that is dimensioned to be slideably received within said generally rectangular slot wherein one end of the male stem element is provided with a pair of capture arms which are adapted to engage the rear of the electrical plug.
Claim 2
Dependent Claim
151 words
A lock apparatus for use in combination with an electrical cord and a plug having prongs wherein the lock apparatus comprises: a housing unit comprising a generally rectangular housing member including a lower base portion; an upper plug receiving portion; an upper lock receiving portion; and, an elongated generally rectangular slot which extends through said housing member; and, a locking unit comprising a key actuated locking mechanism which is disposed in the upper lock receiving portion of the housing unit and provided with a latch detent that is adapted to extend into said generally elongated rectangular slot in the housing unit; and, a plug capture member including an elongated male stem element that is dimensioned to be slideably received within said generally rectangular slot wherein one end of the male stem element is provided with a pair of capture arms which are adapted to engage the rear of the electrical plug.
Claim 3
Dependent Claim
43 words
The lock apparatus as in claim 1 wherein said male stem element is provided with a plurality of apertures along its longitudinal axis wherein each of said plurality of apertures are dimensioned to receive the latch detent of the key actuated locking mechanism.
Claim 4
Dependent Claim
34 words
The lock apparatus as in claim 2 wherein the upper plug receiving portion of said housing unit is provided with a plurality of apertures that are dimensioned to receive the prongs of said plug.
Claim 5
Dependent Claim
39 words
The lock apparatus as in claim 3 wherein the generally elongated slot in the housing unit is further provided with an aperture that is positioned beneath and dimensioned to receive said detent latch of the key actuated locking mechanism.
Claim 6
Dependent Claim
38 words
The lock apparatus as in claim 4 wherein the capture arms of said plug capture member form a space that is dimensioned to accommodate the passage of the electrical cord and prevent the passage of the electrical plug.
References Cited (Backward Citations)
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US4445738A
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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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |