US4671587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child-proof outlet cover
Assignee: Cosco Management Inc
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Filing: 1986-08-13
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Granted: 1987-06-09
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Expires: 2006-08-13
Abstract
Abstract A child-proof outlet cover includes a base mountable over an electrical outlet faceplate and a pair of caps attached to the base with flexible strips. The caps are retained in the closed position on upstanding walls around openings in the base, which provide access to the outlet sockets. The caps include spaced-apart teeth and the walls include spaced-apart shoulders which engage in the closed position and prevent removal of the cap by a small child. A resilient sheet in the cap biases the teeth and shoulders into engagement. Depression of the cap toward the base followed by rotation are required for cap removal.
Inventors
- 👤 Michael Lerner
- 👤 Michael Bernstein
- 👤 Robert Selame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:16
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44; H01R13/447
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
153 words
A child-proof outlet cover comprising: a base having an opening for access to the outlet and a wall extending from said base and substantially surrounding said opening, said wall having a plurality of spaced-apart, laterally extending shoulders near its top; a cap for attachment to said wall having a cover portion for covering said opening and a flange having a plurality of spaced-apart, laterally extending teeth for engagement with said shoulders when said cover is closed, said cap including resilient means for normally biasing said cap away from said base so that said teeth remain in engagement with said shoulders and for permitting said teeth to be disengaged from said shoulders for removal of said cap when said cap is depressed toward said outlet and then rotated; a flexible attachment between said cap and said base; and means for mounting said base to said outlet with said access opening aligned with the outlet.
Claim 2
Dependent Claim
153 words
A child-proof outlet cover comprising: a base having an opening for access to the outlet and a wall extending from said base and substantially surrounding said opening, said wall having a plurality of spaced-apart, laterally extending shoulders near its top; a cap for attachment to said wall having a cover portion for covering said opening and a flange having a plurality of spaced-apart, laterally extending teeth for engagement with said shoulders when said cover is closed, said cap including resilient means for normally biasing said cap away from said base so that said teeth remain in engagement with said shoulders and for permitting said teeth to be disengaged from said shoulders for removal of said cap when said cap is depressed toward said outlet and then rotated; a flexible attachment between said cap and said base; and means for mounting said base to said outlet with said access opening aligned with the outlet.
Claim 3
Dependent Claim
24 words
An outlet cover as defined in claim 1 wherein said flexible attachment includes a flat strip integrally molded with said cap and said base.
Claim 4
Dependent Claim
100 words
An outlet cover as defined in claim 1 wherein each of said shoulders includes a surface tapered outwardly with distance from the top of said wall and terminated in an inwardly extending stop surface, and each of said teeth includes a surface tapered inwardly with distance from the edge of said flange and terminated in an outwardly extending stop surface, said wall and said flange having sufficient resilience to permit said cap to be pressed onto said wall until it snaps into the closed position with the stop surfaces of said teeth engaged with the stop surfaces of said shoulders.
Claim 5
Dependent Claim
61 words
An outlet cover as defined in claim 3 wherein each of said shoulders includes downward projections on opposite sides of said stop surfaces to define a notch for receiving one of said teeth, such that said cap must be pressed toward said base until the stop surfaces of said teeth clear said projections and then must be rotated for removal thereof.
Claim 6
Dependent Claim
42 words
An outlet cover as defined in claim 1 wherein said flange surrounds said wall when the cover is closed, said shoulders extend outwardly from an outer surface of said wall and said teeth extend inwardly from an inner surface of said flange.
Claim 7
Dependent Claim
88 words
An outlet cover as defined in claim 5 wherein said resilient means comprises a resilient sheet retained in said cap by said teeth and support means for supporting a central part of said resilient sheet in a parallel, spaced-apart relationship with said cover portion so that an outer edge of said resilient sheet is flexed toward said cover portion when said cap is pressed on said wall, said resilient sheet biasing said cap and said base in opposite directions and maintaining said teeth in engagement with said shoulders.
Claim 8
Dependent Claim
32 words
An outlet cover as defined in claim 6 wherein said support means comprises a support rib extending from the central part of said cover portion in the same direction as said flange.
Claim 9
Dependent Claim
29 words
An outlet cover as defined in claim 7 wherein said resilient sheet includes a raised generally circular rib of smaller diameter than said wall for enhancing the resilience thereof.
Claim 10
Dependent Claim
34 words
An outlet cover as defined in claim 1 having two openings for access to a conventional electrical outlet and a pair of caps each individually attached to said base with a flexible attachment strip.
Claim 11
Dependent Claim
35 words
An outlet cover as defined in claim 9 wherein said mounting means comprises a mounting hole between said access openings for mounting said cover and an outlet faceplate over said outlet with a mounting screw.
Claim 12
Dependent Claim
23 words
An outlet cover as defined in claim 10 Wherein said caps, said attachment strips and said base are an integrally molded plastic piece.
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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |