US3578559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless belt with pockets for collecting water drained through a fourdrinier wire
Assignee: Beloit Corp
•
Filing: 1969-08-29
•
Granted: 1971-05-11
•
Expires: 1989-08-29
Abstract
Abstract THE SURFACE OF A PAPER FORMING WIRE OPPOSITE THE PAPERMAKING STOCK CARRIED THEREBY RUNS IN CONTACT WITH A PORTION OF AN ENDLESS MOVING DRAINAGE BELT PROVIDED WITH ENCLOSED POCKETS WHICH HAVE OPENINGS FACING AN ADJACENT WIRE TO COLLECT WATER DRAINED FROM THE STOCK THROUGH THE ADJACENT WIRE AND WHICH ARE SUBSEQUENTLY EMPTIED BY GRAVITY ALONG A PORTION OF THE BELT PATH REMOTE FROM THE WIRE. SUCH APPARATUS IS PARTICULARLY SUITABLE FOR USE IN TWIN WIRE VERTICAL FORMATION MACHINES IN WHICH A SEPARATE DRAINAGE BELT IS PROVIDED IN CONTACT WITH EACH FORMING WIRE IN CLOSE PROXIMITY TO THE HEADBOX SLICE.
Inventors
- 👤 Ralph A Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:37
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/003; Y; Y10; Y10S; Y10S162/00; Y10S162/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |