Method of splicing rubber conveyer belts each having a steel cord embedded therein
Abstract
Abstract A method of splicing rubber conveyor belts each having a steel cord embedded therein comprising the steps of cutting out one end to be spliced of a rubber conveyor belt comb-teeth sharped projections each having a steel cord embedded therein and whose top surface is flat and bottom surface is convex in cross section, cutting out of another end of the rubber conveyor belt a base plate having a reduced thickness provided between successive steel cords with grooves formed complementally with the comb-teeth shaped projections at one end of the rubber conveyor belt and whose bottom surface is concave in cross section, bringing the comb-teeth shaped projections into engagement with the grooves, and filling up gaps formed between respective ends of the belt with new rubber cover to form a flat and continuous spliced surface. The comb-teeth shaped projections and grooves are cut of respective end of the belt with the aid of an electrically heating cutter having a U-shaped knife blade adapted to be heated at about 800 degrees celsius during its use.
Inventors
- 👤 Kaneshige Ninomiya
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |