Pin-feed tractor for paper webs
Abstract
Abstract THE TRACTOR TYPE OF PIN-FEED DEVICE FOR FEEDING MARGINALLY PREFORATED PAPER WEBS SUCH AS CONTINUOUS BUSINESS FORMS TO, FORM, OR THOROUGH IMPRINTING OR HANDLING MACHINES, PRESENTS PERCULIARLY CONFIGURED ENDLESS BELTS, PINCARRYING ELEMENTS OR CLIPS, AND DRIVE SPROCKETS THEREFOR. THE PIN ELEMENTS ARE DETACHABLE FROM THE ENDLESS BELT AND ARE PREFERABLY MADE OF PLASTIC ALTHOUGH FOR SOME PURPOSES METAL MAY BE USED. A SERIES OF TRANSVERSE RIBS ARE PRO- VIDED ALONG THE BELT, ALTERNATE ONES OF WHICH ARE SPACED FOR INTERLOCKING ENGAGEMENT WITH TRANSVERSE NOTCHES OR RECESSES FORMED ON THE RESPECTIVE PIN ELEMENTS. SUBSTANTIALLY COINCIDENTALLY WITH THESE NOTCHES, THE PIN ELEMENTS ARE THEMSELVES PROVIDED WITH DOWNWARDLY PROJECTING TRANSVERSELY DISPOSED RIB PORTIONS OF PROTUBERANCES.
Inventors
- 👤 Ronald W Brewster
- 👤 Raymond E Connor
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) | 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 |