US3020372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuse structures
Assignee: Chase Shawmut Co
•
Filing: 1958-11-24
•
Granted: 1962-02-06
•
Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Kozacka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/044; H01H85/045; H01H85/0456
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A FUSIBLE PROTECTIVE DEVICE COMPRISING AN INSULATING CASING A PULVERULENT ARC-QUENCHING FULGURITE-FORMING FILLER, INSIDE SAID CASING, A FUSIBLE ELEMENT IN RIBBON-FORM SUBMERSED IN SAID FILLER, SAID ELEMENT HAVING A FIRST ZONE OF REDUCED CROSS-SECTIONAL AREA SITUATED BETWEEN THE ENDS THEREOF, LOW FUSING POINT METAL OVERLAY MEANS ON SAID ELEMENT ADJACENT, SAID FIRST ZONE OF REDUCED CROSS-SECTION AL AREA, SAID ELEMENT HAVING ADDITIONAL ZONES OF REDUCED
Claim 2
Dependent Claim
65 words
A FUSIBLE PROTECTIVE DEVICE COMPRISING AN INSULATING CASING A PULVERULENT ARC-QUENCHING FULGURITE-FORMING FILLER, INSIDE SAID CASING, A FUSIBLE ELEMENT IN RIBBON-FORM SUBMERSED IN SAID FILLER, SAID ELEMENT HAVING A FIRST ZONE OF REDUCED CROSS-SECTIONAL AREA SITUATED BETWEEN THE ENDS THEREOF, LOW FUSING POINT METAL OVERLAY MEANS ON SAID ELEMENT ADJACENT, SAID FIRST ZONE OF REDUCED CROSS-SECTION AL AREA, SAID ELEMENT HAVING ADDITIONAL ZONES OF REDUCED
References Cited (Backward Citations)
US1107861A
Cited
US1334572A
Cited
US1396255A
Cited
US2658974A
Cited
US2833890A
Cited
US2808487A
Cited
US2866038A
Cited
US2864916A
Cited
US2866040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |