Method of making reinforced belting
Abstract
Abstract A METHOD OF MAKING REINFORCED BELTING COMPRISING ADVANCING TWO ELASTOMERIC COVER PLIES WITH AN ARRAY OF SPACED PARALLEL INEXTENSIBLE CORDS INTERMITTENTLY THROUGH A PLATEN PRESS AND A CLAMP, THE CORDS PREVIOUSLY PASSING THROUGH ANOTHER CLAMP AND A TENSIONING DEVICE. THE PRESS, CLAMP AND TENSIONING DEVICE ARE OPERATED TO COMPRESS LENGTHS OF THE PILES AND CORDS SEQUENTIALLY INTO A CONSOLIDATED ASSEMBLY BY A PRESSURE OF UP TO 800 LBS. PER SQUARE INCH, THE CORDS BEING TENSIONED WHILE COMPRESSION TAKES PLACE, AND THE CORDS AND PILES BEING ADVANCED BETWEEN EACH COMPRESSION BY THE PRESS LENGTH. THE CORDS OR PLY FACES MAY BE HEATED TO 200*F. BEFORE COMPRESSING TO ENSURE PENETRATION OF THE CORD INTERSTICES. VULCANISATION IS PERFORMED SUBSEQUENTLY IN A ROTARY VULCANISING APPARATUS MODIFIED TO ENSURE ENTRY TANGENTIAL TO THE ROLLERS THEREOF.
Inventors
- 👤 John W Grainger
Bibliographic Details
Claims Analysis
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |