Piston and end dam sealing apparatus for adjustable deflection rolls
Abstract
Abstract THE PISTON FOR CONTROLLING DEFLECTION OF A CONTROLLED DEFLECTION ROLL IS DISPOSED IN AN ELONGATED SLOT IN THE CENTER SHAFT OF THE ROLL AND PROVIDED WITH METAL SEALING STRIPS WHICH ARE SPRING BIASED TO BE URGED AGAINST THE SIDEWALLS OF THE ELONGATE SLOT FOR SEALING OF THE PISTON. A FLUID PASSAGEWAY IS PROVIDED IN COMMUNICATION WITH SHAPED SURFACES OF THE SEALING STRIPS TO FORCE THE SEALING STRIPS AGAINST THE ADJACENT WALLS OF THE ELONGATED SLOT AND THE SEATING GROOVES OF THE PISTON FOR THE SEALING STRIPS. A PAIR OF END DAMS ARE PROVIDED TO DEFINE THE ENDS OF THE ELONGATE SLOT AND TO PROVIDE THE SLOT WITH A VARIABLE LENGTH BY MEANS OF FLUID OPERATED END DAMS PISTONS WHICH ARE ALSO SPRING BIASED TO PROVIDE INITIAL SEALING AGAINST THE END OF THE PISTON PRIOR TO THE APPLICATION OF FLUID PRESSURE.
Inventors
- 👤 Edgar J Justus
- 👤 Alan R Sorenson
- 👤 John Paul Turcotte
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |