Reinforced fusible element
Abstract
Abstract A REINFORCED FUSIBLE ELEMENT USEFUL IN FIRE EXTINGUISHING SPRINKLERS, FUSIBLE LINKS ON FIRE DOORS AND THE LIKE IS DISCLOSED WHEREIN THE FUSIBLE MATERIAL USUALLY SOLDER OF A LEAD ALLOY OR THE LIKE IS PROVIDED WITH REINFORCING MEANS FOR STABILIZING ITS SIZE AND SHAPE BY ACTING TO PREVENT COLD FLOW OF THE ALLOY AS A RESULT OF COMPRESSIVE OR TENSION FORCES THEREAGAINST. SPECIFICALLY A FUSIBLE ELEMENT MAY BE PROVIDED WITH REINFORCING FIBERS OF SUITABLE MATERIALS INCLUDING NATURAL FIBERS, SYNTHETIC FIBERS AND METAL FIBERS OR FINE STRANDS MAY BE MIXED INTO THE ALLOY SO AS TO BE DISPOSED CONTINUOUSLY THERETHROUGH AND STILL ANOTHER VERSION ENCLOSES A SECTION OF FUSIBLE MATERIAL IN A WOVEN JACKET ENGAGING THE SURFACE OF THE FUSIBLE MATERIAL THAT WOULD ORDINARILY EXPAND WHEN THE SAME IS SUBJECTED TO COMPRESSIVE FORCES, ETC.
Inventors
- 👤 Wayne E Ault
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |