US3595747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction box covers with rows of drainage openings for uniform dewatering
Assignee: Huyck Corp
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Filing: 1968-09-30
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Granted: 1971-07-27
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Expires: 1988-09-30
Abstract
Abstract THIS INVENTION RELATES TO SUCTION BOX COVERS, AND A METHOD FOR PRODUCING THEM, FOR USE IN UNIFORMLY DELIQUIFYING A WEB ON A TRAVELING FORMING MEDIUM, FOR EXAMPLE IN PAPERMAKING MACHINES; THE COVERS HAVING A PLURALITY OF DRAINAGE OPENINGS OF RADIUS R ORIENTED IN UNIFORMLY SPACED PARALLEL ROWS, THE OPENINGS IN ADJACENT ROWS BEING SPACED FROM EACH OTHER IN THE CROSS-MACHINE DIRECTION A CENTER TO CENTER DISTANCE. A FROM THE NEXT ADJACENT OPENING. N CONSECUTIVE ROWS OF SAID OPENINGS FORMING A REPETITIVE PATTERN, SAID SPACING A BEING DETERMINED BY THE EQUATION: D R A W I N G
Inventors
- 👤 Rudolph Walser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/523; Y; Y10; Y10T; Y10T83/00; Y10T83/04
Claims Analysis
Total Claims: 0
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |