US4865557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security device for electric appliances
Assignee: Individual
•
Filing: 1987-11-13
•
Granted: 1989-09-12
•
Expires: 2007-11-13
Abstract
Abstract A closure device clamps over the plug to an appliance for securing the appliance from unauthorized use. The closure device has a base and an opposed hinged cover which closes over the base to enclosed the plug. Twin posts extend upward from the base for engaging twin apertures in the cover when the device is closed. Caps on the posts lock the device closed, and must be severed to remove the posts from the apertures.
Inventors
- 👤 Alex Kershaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:05
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/60
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
115 words
An electrical appliance security device having an open condition and a closed condition for retaining a plug to an electrical cord, comprising: a base closure member for receiving the plug when the security device is in the open condition; an opposed cover closure member which interfaces with the base closure member to form a plug retaining chamber when the security device is in the closed condition; port means for permitting the electrical cord to extend out of the plug retaining chamber; and severable latch means for securing the closure members together when the security device is in the closed condition, which must be severed to permit the closure members to open and release the cord.
Claim 2
Dependent Claim
115 words
An electrical appliance security device having an open condition and a closed condition for retaining a plug to an electrical cord, comprising: a base closure member for receiving the plug when the security device is in the open condition; an opposed cover closure member which interfaces with the base closure member to form a plug retaining chamber when the security device is in the closed condition; port means for permitting the electrical cord to extend out of the plug retaining chamber; and severable latch means for securing the closure members together when the security device is in the closed condition, which must be severed to permit the closure members to open and release the cord.
Claim 3
Dependent Claim
50 words
The security device of claim 1, wherein the severable latch means further comprises: post means extending from one of the closure members toward the other cover closure member; and aperture means in the other closure member for receiving the post means when the security device in in the closed condition.
Claim 4
Dependent Claim
63 words
The security device of claim 2, wherein the post means further comprises a cap means on the end thereof having an overhanging peripheral portion extending therefrom for engaging the aperture means and holding the closure members together when the security device is in the closed condition, which when severed from the post means permits the closure members to open into the open condition.
Claim 5
Dependent Claim
16 words
The security device of claim 3, wherein the cap means is larger than the aperture means.
Claim 6
Dependent Claim
20 words
The security device of claim 4, wherein the cap means is cone shaped to facilitate passing through the aperture means.
Claim 7
Dependent Claim
20 words
The security device of claim 4, wherein the cap means is arrows shaped to facilitate passing through the aperture means.
Claim 8
Dependent Claim
24 words
The security device of claim 3, wherein the overhanging peripheral portion of the cap means guides the severing when the cap means are severed.
Claim 9
Dependent Claim
29 words
The security device of claim 7, wherein the post means has a groove proximate the cap means for defining where the cap means is severed from the post means.
Claim 10
Dependent Claim
17 words
The security device of claim 3, wherein the perimeter region adjacent to the aperture means is submerged.
Claim 11
Dependent Claim
35 words
The security device of claim 9, wherein the security device further comprises a severing means for severing the cap means from the post means to permit the closure members to open into the open condition.
Claim 12
Dependent Claim
23 words
The security device of claim 10, wherein the severing means is shaped to enter the submerged perimeter region and sever the cap means.
Claim 13
Dependent Claim
30 words
The security device of claim 11, wherein the severing means is a snipper means having a pair of opposed severing edges for severing the cap means from the post means.
Claim 14
Dependent Claim
24 words
The security device of claim 12, wherein the snipping means is nose shaped to enter the submerged perimeter region and sever the cap means.
Claim 15
Dependent Claim
26 words
The security device of claim 3, wherein the post means is on the base closure member and the aperture means is on the cover closure member.
Claim 16
Dependent Claim
24 words
The security device of claim 14, wherein the post means comprises a pair of posts and the aperture means comprises a pair of apertures.
Claim 17
Dependent Claim
23 words
The security device of claim 15, wherein the pair of posts are spaced to define a guide channel for retaining the appliance cord.
Claim 18
Dependent Claim
26 words
The security device of claim 1, wherein the port means is a notch in the cover closure member along the interface with the base closure member.
Claim 19
Dependent Claim
26 words
The security device of claim 1, wherein the port means is a notch in the base closure member along the interface with the base closure member.
Claim 20
Dependent Claim
28 words
The security device of claim 18, wherein the base closure member is the major closure member and retains the plug while the cover closure member is closed thereover.
Claim 21
Dependent Claim
30 words
The security device of claim 19, wherein the port notch in the base closure member retains the cord proximate the plug while the plug is retained in the closure means.
Claim 22
Dependent Claim
43 words
The security device of claim 1, wherein the port means is formed by a closure notch in the cover closure member and a base notch in the base closure member along the interface between the cover closure member and the base closure member.
Claim 23
Dependent Claim
17 words
The security device of claim 21, wherein the upper notch is the same size as the lower.
Claim 24
Dependent Claim
21 words
The security device of claim 1, wherein the closure members separate when the security device is opened to the open condition.
Claim 25
Dependent Claim
22 words
The security device of claim 1 wherein the closure members are hinged together to effect the open condition and the closed condition.
Claim 26
Dependent Claim
21 words
The security device of claim 24 wherein the closure members are removably hinged together and separate when the closure is opened.
Claim 27
Dependent Claim
16 words
The security device of claim 24, wherein the closure members are hinged along a major side.
Claim 28
Dependent Claim
16 words
The security device of claim 24, wherein the closure members are hinged along a minor side.
Claim 29
Dependent Claim
20 words
The security device of claim 27, wherein the closure members are hinged along the side opposite to the port means.
References Cited (Backward Citations)
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Cited
US4488764A
Cited
US4592607A
Cited
US4647726A
Cited
US4673230A
Cited
US4749363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |