US4075676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interrupter
Assignee: Individual
•
Filing: 1975-12-24
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Granted: 1978-02-21
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Expires: 1995-12-24
Abstract
Abstract A device for protecting electrical appliances from electrical surges having male plug members to connect the device with a wall receptacle; a female receptacle to receive a plug of the appliance; a self-restoring, current interrupting means for diverting current from 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
2026-10-27 12:52
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/665; H01R13/6666; H01R13/70; H01R13/713; H01T; H01T4/00; H01T4/08; H01R31/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
A device for interrupting electrical current used by a household electrical appliance comprising: a housing supporting a pair of prong means and a grounding prong means adapted to be inserted into a grounded electrical receptacle and a female receptacle adapted to be electrically connected to an appliance, said female receptacle including three apertures; a plurality of means for electrically interconnecting said prong means and a corresponding element of said female receptacle, said plurality of interconnecting means including three non-fusible conductive elements being unitary portions of said three prong means and forming contact portions below said apertures of said female receptacle, and 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 a means connected between two of said interconnecting means for interrupting current flow to said female receptacle at a predetermined voltage level by creating a path of minimum resistance between said two interconnecting means.
Claim 2
Independent Claim
181 words
A device for interrupting electrical current used by a household electrical appliance comprising: a housing supporting a pair of prong means and a grounding prong means adapted to be inserted into a grounded electrical receptacle and a female receptacle adapted to be electrically connected to an appliance, said female receptacle including three apertures; a plurality of means for electrically interconnecting said prong means and a corresponding element of said female receptacle, said plurality of interconnecting means including three non-fusible conductive elements being unitary portions of said three prong means and forming contact portions below said apertures of said female receptacle, and 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 a means connected between two of said interconnecting means for interrupting current flow to said female receptacle at a predetermined voltage level by creating a path of minimum resistance between said two interconnecting means.
Claim 3
Dependent Claim
41 words
The 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 receptacle when said two prong means are inserted in a three aperture electrical receptacle.
Claim 4
Dependent Claim
79 words
The 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.
Claim 5
Dependent Claim
54 words
The device of claim 1 wherein two of said conductive elements are rectangular having a unitary prong means extending substantially perpendicular from one end of said conductive element in a first direction and a contact portion extending substantially perpendicular from the other end of said conductive elements in a direction opposite said first direction.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |