Patent US3755635A successfully refreshed from Google Patents.
US3755635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolated electrical outlet assembly
Assignee: Individual
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Filing: 1972-04-07
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Granted: 1973-08-28
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Expires: 1992-04-07
Abstract
Abstract An electrical outlet and safety control circuit for preventing accidental shock comprising a socket with a pair of outlet terminals isolated from a primary voltage source by normally opened relay contacts, and a switch actuatable by an elongated pin on the associated electrical plug upon insertion thereof into the socket, the switch being serially connected to the relay for closure thereof and simultaneous energization of the electrical terminals upon complete insertion of the plug.
Inventors
- 👤 Gill W Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H01R13/703; H01R13/7036; H01R13/7038; H01R13/713
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
186 words
An electrical socket assembly comprising an insulated housing with first and second prong-receiving slots therein, a pair of electrical terminals disposed in said first and second prongreceiving slots, a third prong-receiving slot in said housing and aligned with a passageway coextensive therewith and adapted to receive an actuation prong on an electrical plug, said passageway being of elongated configuration with said third slot at one end thereof, a switch mounted to said housing adjacent said passageway and including an actuator extending into said passageway remote from said third slot and being movable between opened and closed positions, said elongated passageway including an opening, said switch actuator comprising an elongated lever arm pivotally mounted with respect to said switch for movement about an axis transversely disposed of said elongated passageway, and an electrical plug including a pair of conductive prongs extending through said first and second slots and in engagement with said pair of electrical terminals and an actuation prong extending into said passageway and in operative wiping engagement with said switch lever arm to maintain it substantially parallel to said passageway when in said closed position.
Claim 2
Dependent Claim
186 words
An electrical socket assembly comprising an insulated housing with first and second prong-receiving slots therein, a pair of electrical terminals disposed in said first and second prongreceiving slots, a third prong-receiving slot in said housing and aligned with a passageway coextensive therewith and adapted to receive an actuation prong on an electrical plug, said passageway being of elongated configuration with said third slot at one end thereof, a switch mounted to said housing adjacent said passageway and including an actuator extending into said passageway remote from said third slot and being movable between opened and closed positions, said elongated passageway including an opening, said switch actuator comprising an elongated lever arm pivotally mounted with respect to said switch for movement about an axis transversely disposed of said elongated passageway, and an electrical plug including a pair of conductive prongs extending through said first and second slots and in engagement with said pair of electrical terminals and an actuation prong extending into said passageway and in operative wiping engagement with said switch lever arm to maintain it substantially parallel to said passageway when in said closed position.
Claim 3
Dependent Claim
29 words
The structure set forth in claim 1 wherein said prongs are substantially parallel to each other, said third prong being of greater length than said first and second prongs.
Claim 4
Dependent Claim
72 words
The combination set forth in claim 1 wherein said plug and said housing include oppositely disposed surface areas around said prongs and openings, and a raised lip integral with said housing and closely surrounding said surface areas, said electrical terminals being energized upon full insertion of said plug, such that said surface areas are immediately adjacent each other and shielded by said lip whereby personal contact with said electrical prongs is prevented.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |