Patent US3084308A successfully refreshed from Google Patents.
US3084308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: HP Inc
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Filing: 1960-01-05
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Granted: 1963-04-02
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Expires: 1980-01-05
Abstract
No abstract record available.
Inventors
- 👤 Noel E Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:42
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01H9/0011
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
235 words
AN ELECTRICAL INSTRUMENT DESIGNED TO OPERATE ON EITHER OF TWO SUPPLY VOLTAGES AND COMPRISING A POWER TRANSFORMER HAVING FIRST AND SECOND PRIMARY WINDINGS, EACH HAVING FIRST AND SECOND TERMINALS, THE FIRST TERMINAL OF THE FIRST WINDING BEING CONNECTED TO A FIRST LEAD OF AN ELECTRICAL SUPPLY, THE FIRST TERMINAL OF THE SECOND WINDING BEING CONNECTED TO THE SECOND LEAD OF SAID ELECTRICAL SUPPLY, FIRST FUSE MEANS INCLUDING A FIRST SET OF FUSE-HOLDER TERMINALS TO CONNECT TOGETHER THE SECOND TERMINALS OF THE FIRST AND SECOND WINDINGS, SECOND FUSE MEANS INCLUDING A SECOND SET OF FUSE-HOLDER TERMINALS LOCATED IN THE PLANE OF THE FIRST SET OF FUSE-HOLDER TERMINALS TO CONNECT TOGETHER THE SECOND TERMINAL OF THE SECOND WINDING AND THE FIRST LEAD OF SAID ELECTRICAL SUPPLY, THIRD FUSE MEANS INCLUDING A THIRD SET OF FUSE-HOLDER TERMINALS LOCATED IN THE PLANE OF THE FIRST SET OF FUSE-HOLDER TERMINALS TO CONNECT TOGETHER THE SECOND TERMINAL OF THE FIRST WINDING AND THE SECOND LEAD OF SAID ELECTRICAL SUPPLY, THE FUSE-HOLDER TERMINALS BEING SO POSITIONED THAT A FUSE IN THE FIRST SET OF FUSE-HOLDER TERMINALS OCCUPIES A PORTION OF THE SPACE OCCUPIED BY A FUSE IN AT LEAST ONE OF THE SECOND AND THIRD SETS OF FUSE-HOLDER TERMINALS, WHEREBY THE CONNECTION MADE BY A FUSE INSERTED IN THE FIRST SET OF FUSEHOLDER TERMINALS PREVENTS A CONNECTION FROM BEING MADE BY FUSES INSERTED IN THE SECOND AND THIRD SETS OF FUSEHOLDER TERMINALS.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |