US4071872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interrupter
Assignee: Individual
•
Filing: 1976-08-12
•
Granted: 1978-01-31
•
Expires: 1996-08-12
Abstract
Abstract A device for protecting electrical appliances from electrical surges having male prong members to connect the device to an electrical wall outlet; a female receptacle to receive a plug of the appliance; a self-restoring, current diverting spark gap means for interrupting current at the female receptacle at a predetermined voltage level.
Inventors
- 👤 Charles M. Phillips, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:10
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/665; H01R13/6666; H01T; H01T4/00; H01T4/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
An interrupter device for interrupting electrical current used by a household electrical appliance comprising: a housing supporting a plurality of prong means adapted to be inserted into an electrical outlet and a female receptacle adapted to receive the electrical plug connector of an appliance; a plurality of conductive elements for electrically interconnecting each of said prong means to a corresponding element of said female receptacle wherein one of said conductive elements is rectangular having an L-shaped grounding prong means extending from one end of said conductive element in a first direction and a contact portion extending from the other end of said conductive element in a direction opposite said first direction; and spark gap means connected between two conductors of said interconnecting conductor means for interrupting current flow to said female receptacle at a predetermined voltage level by creating a path of low resistance between said two interconnecting conductor means.
Claim 2
Dependent Claim
150 words
An interrupter device for interrupting electrical current used by a household electrical appliance comprising: a housing supporting a plurality of prong means adapted to be inserted into an electrical outlet and a female receptacle adapted to receive the electrical plug connector of an appliance; a plurality of conductive elements for electrically interconnecting each of said prong means to a corresponding element of said female receptacle wherein one of said conductive elements is rectangular having an L-shaped grounding prong means extending from one end of said conductive element in a first direction and a contact portion extending from the other end of said conductive element in a direction opposite said first direction; and spark gap means connected between two conductors of said interconnecting conductor means for interrupting current flow to said female receptacle at a predetermined voltage level by creating a path of low resistance between said two interconnecting conductor means.
Claim 3
Dependent Claim
42 words
The interrupter device of claim 1 wherein said L-shaped grounding prong means includes an orifice adapted to be superimposed on the ground aperture of a three aperture electrical outlet when said two prong means are inserted in a three aperture electrical outlet.
Claim 4
Dependent Claim
80 words
The interrupter device of claim 1 wherein said housing being a substantially rectangular six sided closure having a front wall, a bottom wall and back wall; said front wall including three apertures for said female receptacle, said rear wall having two apertures and two of said prong means extend through said apertures substantially perpendicular to said rear wall, and said bottom wall includes an aperture and said grounding prong means extends through said aperture substantially perpendicular to said bottom wall.
References Cited (Backward Citations)
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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) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |