US3218228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction pipe cover
Assignee: A P WAGENKNECHT Co Inc
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Filing: 1963-09-05
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Granted: 1965-11-16
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Expires: 1983-09-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Wagenknecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A COVER FOR A SUCTION PIPE FOR AIDING IN THE CLEANING OF THE FELT OF A PAPERMAKING MACHINE COMPRISING AN ELONGATED PLATE LIKE MEMBER HAVING A MULTIPLICITY OF OPENINGS THROUGHOUT COMMUNICATING WITH THE SUCTION PIPE, SAID PLATE LIKE MEMBER HAVING A SURFACE OVER WHICH SAID FELT TRAVELS AND A ROUNDED TRAILING EDGE ADJACENT SAID SURFACE EXTENDING IN A DIRECTION AT A RIGHT ANGLE TO THE DIRECTION OF TRAVEL OF SAID FELT AND AN UNDERCUT PORTION JOINED BY SAID ROUNDED TRAILING EDGE TO SAID SURFACE.
Claim 2
Dependent Claim
84 words
A COVER FOR A SUCTION PIPE FOR AIDING IN THE CLEANING OF THE FELT OF A PAPERMAKING MACHINE COMPRISING AN ELONGATED PLATE LIKE MEMBER HAVING A MULTIPLICITY OF OPENINGS THROUGHOUT COMMUNICATING WITH THE SUCTION PIPE, SAID PLATE LIKE MEMBER HAVING A SURFACE OVER WHICH SAID FELT TRAVELS AND A ROUNDED TRAILING EDGE ADJACENT SAID SURFACE EXTENDING IN A DIRECTION AT A RIGHT ANGLE TO THE DIRECTION OF TRAVEL OF SAID FELT AND AN UNDERCUT PORTION JOINED BY SAID ROUNDED TRAILING EDGE TO SAID SURFACE.
References Cited (Backward Citations)
US2712776A
Cited
US2893486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |