US4124836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric fuse
Assignee: Gould Electronics Inc
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Filing: 1977-05-04
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Granted: 1978-11-07
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Expires: 1997-05-04
Abstract
Abstract An electric fuse including a fusible element, a filler in which said element is embedded, a pair of electroconductive terminal elements arranged at the ends of said fusible element and conductively interconnected by said fusible element. The fuse further includes a tubular casing supporting said pair of terminal elements on the ends thereof. Said casing consists of a plurality of stripes of a glass fiber material rolled to cylindrical shape overlapping along the longitudinal edges thereof and impregnated with a polyester resin. The innermost surface of said casing is lined with Johns-Manville "Quintex II".
Inventors
- 👤 Howard G. Wilks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:00
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/165
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
An electric fuse comprising (a) a fusible element; (b) an arc-quenching filler in which said fusible element is embedded; (c) a pair of electroconductive terminal elements arranged at the ends of said fusible element and conductively interconnected by said fusible element; (d) a tubular casing supporting said pair of terminal elements on the ends thereof, said casing comprising a plurality of stripes of a glass-fiber material overlapping along the longitudinal edges thereof and impregnated with polyester resin; and (e) a lining comprising highly purified asbestos in noncarcigenous form and other insulation materials on the radially inner surface of said casing, said lining decreasing the thermal conductivity of said casing to such an extent as to be of the same order as that of a casing of vulcanized fiber or convolutely wound glass-cloth melamine, and said liner being the product known by the trademark "QUINTEX II" formerly of Johns-Manville and presently of the Quin-T-Corporation.
Claim 2
Dependent Claim
153 words
An electric fuse comprising (a) a fusible element; (b) an arc-quenching filler in which said fusible element is embedded; (c) a pair of electroconductive terminal elements arranged at the ends of said fusible element and conductively interconnected by said fusible element; (d) a tubular casing supporting said pair of terminal elements on the ends thereof, said casing comprising a plurality of stripes of a glass-fiber material overlapping along the longitudinal edges thereof and impregnated with polyester resin; and (e) a lining comprising highly purified asbestos in noncarcigenous form and other insulation materials on the radially inner surface of said casing, said lining decreasing the thermal conductivity of said casing to such an extent as to be of the same order as that of a casing of vulcanized fiber or convolutely wound glass-cloth melamine, and said liner being the product known by the trademark "QUINTEX II" formerly of Johns-Manville and presently of the Quin-T-Corporation.
Claim 3
Dependent Claim
47 words
An electric fuse as specified in claim 1 having a fusible element conductively connected to a pair of blade contacts supported by a pair of pins projecting transversely through said pair of blade contacts wherein said lining is positioned inside said casing by said pair of pins.
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) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |