US3305233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ejector mechanism for vacuum conveyor
Assignee: Weyerhaeuser Co
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Filing: 1965-11-17
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Granted: 1967-02-21
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Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Fremont R Cody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
B; B27; B27D; B27D5/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A METHOD OF CONVEYING AND EJECTING SHEET-LIKE MATERIAL FROM A VACUUM CONVEYOR SYSTEM HAVING BELT MEANS POSITIONED ALONG THE LOWER SURFACE OF A CONDUIT MEANS AND A VACUUM PULLING THROUGH SLITS IN THE LOWER SURFACE OF SAID CONDUIT MEANS HOLDING SAID SHEET-LIKE MATERIAL ADJACENT SAID BELT MEANS, COMPRISING; DIVERTING SAID VACUUM FROM SAID SLITS THROUGH OPENINGS IN SAID CONDUIT MEANS, SIMULTANEOUSLY CLOSING SAID SLITS AND EJECTING SAID SHEETLIKE MATERIAL AWAY FROM SAID BELT MEANS.
References Cited (Backward Citations)
US2973960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |