Patent US2984622A successfully refreshed from Google Patents.
US2984622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and device for screening and filtering moist goods
Assignee: Rhewum GmbH
•
Filing: 1957-08-14
•
Granted: 1961-05-16
•
Expires: 1977-08-14
Abstract
No abstract record available.
Inventors
- 👤 Bruninghaus Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:12
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/20; B01D35/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A FILTER, A GENERALLY STATIONARY FRAME, A LENGTH OF FILTER MEDIUM ON THE FRAME, MEANS ON THE FRAME FOR SUPPORTING THE MEDIUM BY ITS OPPOSITE ENDS WITH A PERCEPTIBLE SAG IN ITS INTERMEDIATE AREA AND WITH ITS END AREAS EXTENDING AWAY THEREFROM TO THE OPPOSITE ENDS, AND A VIBRATION GENERATING DEVICE ON THE FRAME CONSTRUCTED TO GENERATE VIBRATIONS IN A DEFINED PLANE, SAID DEVICE BEING ATTACHED TO AT LEAST ONE END OF THE MEDIUM AND DISPOSED SO THAT THE DEFINED PLANE OF THE VIBRATIONS GENERATED THEREBY WILL BE GENERALLY IN THE SAME PLANE AS THE GENERAL PLANE OF THE ADJACENT END AREA OF THE MEDIUM AND ALONG THE LENGTH OF THE MEDIUM.
Claim 2
Dependent Claim
113 words
IN A FILTER, A GENERALLY STATIONARY FRAME, A LENGTH OF FILTER MEDIUM ON THE FRAME, MEANS ON THE FRAME FOR SUPPORTING THE MEDIUM BY ITS OPPOSITE ENDS WITH A PERCEPTIBLE SAG IN ITS INTERMEDIATE AREA AND WITH ITS END AREAS EXTENDING AWAY THEREFROM TO THE OPPOSITE ENDS, AND A VIBRATION GENERATING DEVICE ON THE FRAME CONSTRUCTED TO GENERATE VIBRATIONS IN A DEFINED PLANE, SAID DEVICE BEING ATTACHED TO AT LEAST ONE END OF THE MEDIUM AND DISPOSED SO THAT THE DEFINED PLANE OF THE VIBRATIONS GENERATED THEREBY WILL BE GENERALLY IN THE SAME PLANE AS THE GENERAL PLANE OF THE ADJACENT END AREA OF THE MEDIUM AND ALONG THE LENGTH OF THE MEDIUM.
References Cited (Backward Citations)
DE168053C
Cited
GB189513441A
Cited
GB198756A
Cited
US2251909A
Cited
US2505513A
Cited
US2799398A
Cited
FR1111149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |