Patent US3317825A successfully refreshed from Google Patents.
US3317825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-wire ground type electrical receptacle tester
Assignee: Individual
•
Filing: 1964-10-14
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Granted: 1967-05-02
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 James B Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:43
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/66; G01R31/67
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A TEST INSTRUMENT FOR TESTING THE WIRED CONDITION OF A THREE-WIRE GROUND TYPE ELECTRICAL RECEPTACLE HAVING A NORMALLY ENERGIZED POST, A NORMALLY NEUTRAL POST AND A NORMALLY GROUNDED POST COMPRISING: (A) A PORTABLE, HAND-HELD INSULATIVE HOUSING; (B) A POLARIZED THREE PRONG ELECTRIC PLUG FOR INSERTION INTO SAID RECEPTACLE, INCLUDING, FIRST, SECOND AND THIRD BINDING POST MEANS SAID BINDING POST MEANS COMPRISING THE THREE PRONGS RESPECTIVELY OF SAID ELECTRICAL PLUG MOUNTED ON SAID HOUSING AND EXTENDING THROUGH THE WALLS THEREOF; (1) SAID FIRST BINDING POST MEANS CONNECTED TO THE NORMALLY ENERGIZED POST OF SAID RECEPTACLE, (2) SAID SECOND BINDING POST MEANS CONNECTED TO THE NORMALLY NEUTRAL POST OF SAID RECEPTACLE AND,
Claim 2
Dependent Claim
110 words
A TEST INSTRUMENT FOR TESTING THE WIRED CONDITION OF A THREE-WIRE GROUND TYPE ELECTRICAL RECEPTACLE HAVING A NORMALLY ENERGIZED POST, A NORMALLY NEUTRAL POST AND A NORMALLY GROUNDED POST COMPRISING: (A) A PORTABLE, HAND-HELD INSULATIVE HOUSING; (B) A POLARIZED THREE PRONG ELECTRIC PLUG FOR INSERTION INTO SAID RECEPTACLE, INCLUDING, FIRST, SECOND AND THIRD BINDING POST MEANS SAID BINDING POST MEANS COMPRISING THE THREE PRONGS RESPECTIVELY OF SAID ELECTRICAL PLUG MOUNTED ON SAID HOUSING AND EXTENDING THROUGH THE WALLS THEREOF; (1) SAID FIRST BINDING POST MEANS CONNECTED TO THE NORMALLY ENERGIZED POST OF SAID RECEPTACLE, (2) SAID SECOND BINDING POST MEANS CONNECTED TO THE NORMALLY NEUTRAL POST OF SAID RECEPTACLE AND,
References Cited (Backward Citations)
US2598775A
Cited
GB807544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |