Patent US3980371A successfully refreshed from Google Patents.
US3980371A
Expired / Lapsed
US
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Safety electrical outlet
Assignee: Pacific Electricord Co
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Filing: 1975-11-03
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Granted: 1976-09-14
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Expires: 1995-11-03
Abstract
Abstract There is disclosed a safety electrical outlet which is provided with a sliding, protective plate that overlies the prong-receiving slots of the outlet and is spring-biased to an offset position barring direct access to receiving slots. The invention is particularly adapted for cube taps of electrical connecting cords which generally comprise bodies of molded plastics in which are embedded parallel conductor strips having prong contactors such as prong-receiving slits which are aligned with the prong-receiving slots of the body. As applied to this construction, all, or all except one, of the pairs of prong-receiving slots are protected by an overlying plate. The protective and overlying plate bears a pair of prong-receiving, parallel, through slots and resilient means in the form of a bifurcated spring member having one leg attached to the plate and its bight and remaining leg seated within a central cavity of the cube tap. The plate and spring can be a one-piece, molded construction of a suitable fatigue-resistant plastic or the spring can be a separate metallic element.
Inventors
- 👤 Bernard I. Kahn
- 👤 Donald Dodge
- 👤 Ernest W. Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:34
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44; H01R13/447; H01R13/453
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
An electrical connector for receiving a prong type connector plug comprising: a body bearing at least one pair of parallel, prong-receiving slots in a surface thereof; parallel electrical contacts in the form of conductor strips mounted within said body and bearing prong-receiving slits, one each associated in a prong-receiving position with each of said slots; a cavity in said body open to said surface, centrally positioned between said parallel slots; a protective plate overlying said surface and bearing a pair of prong-receiving, parallel through openings; and resilient means in the form of bifurcated spring member having one leg thereof attached to said protective plate and its bight and remaining leg seated within said cavity to bias said protective plate to one side of said body with said through openings thereof out of alignment with said slots.
Claim 2
Dependent Claim
136 words
An electrical connector for receiving a prong type connector plug comprising: a body bearing at least one pair of parallel, prong-receiving slots in a surface thereof; parallel electrical contacts in the form of conductor strips mounted within said body and bearing prong-receiving slits, one each associated in a prong-receiving position with each of said slots; a cavity in said body open to said surface, centrally positioned between said parallel slots; a protective plate overlying said surface and bearing a pair of prong-receiving, parallel through openings; and resilient means in the form of bifurcated spring member having one leg thereof attached to said protective plate and its bight and remaining leg seated within said cavity to bias said protective plate to one side of said body with said through openings thereof out of alignment with said slots.
Claim 3
Dependent Claim
33 words
The electrical connector of claim 1 in the form of an electrical cube tap comprising a molded body bearing at one of its ends an electrical cord of a pair of electrical conductors.
Claim 4
Dependent Claim
17 words
The electrical cube tap of claim 2 provided with a plurality of pairs of parallel, prong-receiving slots.
Claim 5
Dependent Claim
27 words
The electrical cube tap of claim 3 provided with two pairs of said slots and with said protective plate associated with one of said pairs of slots.
Claim 6
Dependent Claim
28 words
The electrical cube tap of claim 3 bearing at least three pairs of prong-receiving slots with said protective plate associated with two of said three pairs of slots.
Claim 7
Dependent Claim
35 words
The electrical cube tap of claim 2 wherein said molded body bears a lip overlying at least one edge of said cavity and said remaining leg of said spring member is retained beneath said lip.
Claim 8
Dependent Claim
33 words
The electrical cube tap of claim 6 wherein the remaining leg of said resilient spring member is generally U-shaped to provide an outwardly dependent upper end bearing against the undersurface of said lip.
Claim 9
Dependent Claim
17 words
The electrical cube tap of claim 6 wherein said spring member is formed of an acetal copolymer.
Claim 10
Dependent Claim
32 words
The electrical cube tap of claim 2 wherein said cavity comprises a central longitudinal cavity open at the end opposite said conductor bearing end and extending a substantial length of said body.
Claim 11
Dependent Claim
199 words
An electrical cube tap comprising: a one-piece, molded body of resilient material bearing at least two pairs of parallel, prong-receiving slots longitudinally aligned along an exterior surface; an embedded pair of longitudinal and parallel electrical conductor strips, one each underlying longitudinally aligned slots of said pairs of slots and bearing prong-receiving slits, one each in a prong-receiving position within each of said slots; an electrical cord received at one end of said body with separate electrical conductors, one each in engagement with a separate one of said parallel electrical conductor strips; a groove extending transversely across said exterior surface of said body and intersecting a first pair of said pairs of slots; a cavity in said body, open to said groove centrally between said first pair of prong-receiving slots; and a protective plate member seated for sliding movement in said groove and bearing: (1) a pair of parallel, through openings for registration with the underlying first pair of slots; and (2) a bifurcated spring member projecting from its inboard surface into said cavity and operative to bias said plate member transversely of said body, thereby positioning said parallel through openings out of registration with said first pair of slots.
Claim 12
Dependent Claim
199 words
An electrical cube tap comprising: a one-piece, molded body of resilient material bearing at least two pairs of parallel, prong-receiving slots longitudinally aligned along an exterior surface; an embedded pair of longitudinal and parallel electrical conductor strips, one each underlying longitudinally aligned slots of said pairs of slots and bearing prong-receiving slits, one each in a prong-receiving position within each of said slots; an electrical cord received at one end of said body with separate electrical conductors, one each in engagement with a separate one of said parallel electrical conductor strips; a groove extending transversely across said exterior surface of said body and intersecting a first pair of said pairs of slots; a cavity in said body, open to said groove centrally between said first pair of prong-receiving slots; and a protective plate member seated for sliding movement in said groove and bearing: (1) a pair of parallel, through openings for registration with the underlying first pair of slots; and (2) a bifurcated spring member projecting from its inboard surface into said cavity and operative to bias said plate member transversely of said body, thereby positioning said parallel through openings out of registration with said first pair of slots.
Claim 13
Dependent Claim
45 words
The cube tap of claim 10 bearing an additional pair of prong-receiving slots in an exterior surface opposite to that bearing said at least two pairs of slots with a second transverse groove, cavity and plate means associated with a second pair of said slots.
Claim 14
Dependent Claim
22 words
The cube tap of claim 11 wherein said central cavity extends longitudinally into said body from its end opposite its cord-receiving end.
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |