US3292791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary disc filter device
Assignee: Chemap AG
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Filing: 1964-12-14
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Granted: 1966-12-20
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Muller Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:58
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A FILTER DEVICE COMPRISING A SHAFT; FILTER ELEMENTS MOUNTED ON SAID SHAFT, EACH OF SAID FILTER ELEMENTS COMPRISING A FILTER CLOTH, A BASE SHEET AND AN INTERMEDIATE LAYER; A PLURALITY OF RADIALLY EXTENDING TIE MEMBERS LOCATED OVER THE FILTER CLOTH OF EACH FILTER ELEMENT, SAID TIE MEMBERS BEING INCLINED WITH RESPECT TO SAID SHAFT; A SPACING RING MOUNTED ON SAID SHAFT ABOVE EACH FILTER ELEMENT, WHEREIN ONE END OF EACH TIE MEMBER IS SECURED TO AN ASSOCIATED SPACING RING AND THE OTHER END OF EACH TIE MEMBER IS PROVIDED WITH A SCREW-THREAD; CLAMPING MEANS FITTED ON TO EACH OF SAID TIE MEMBERS AT THE SCREW-THREADED END THEREOF, SAID CLAMPING MEANS ENGAGING AN EDGE OF THE FILTER ELEMENT AND SERVING TO CLAMP SAID FILTER CLOTH, BASE SHEET AND INTERMEDIATE LAYER OF SAID ELEMENT TOGETHER; AND A NUT PROVIDED FOR ENGAGEMENT WITH SAID SCREW-THREAD ON EACH OF SAID TIE MEMBERS FOR SECURING SAID CLAMPING MEANS TO SAID TIE MEMBERS.
Claim 2
Dependent Claim
157 words
A FILTER DEVICE COMPRISING A SHAFT; FILTER ELEMENTS MOUNTED ON SAID SHAFT, EACH OF SAID FILTER ELEMENTS COMPRISING A FILTER CLOTH, A BASE SHEET AND AN INTERMEDIATE LAYER; A PLURALITY OF RADIALLY EXTENDING TIE MEMBERS LOCATED OVER THE FILTER CLOTH OF EACH FILTER ELEMENT, SAID TIE MEMBERS BEING INCLINED WITH RESPECT TO SAID SHAFT; A SPACING RING MOUNTED ON SAID SHAFT ABOVE EACH FILTER ELEMENT, WHEREIN ONE END OF EACH TIE MEMBER IS SECURED TO AN ASSOCIATED SPACING RING AND THE OTHER END OF EACH TIE MEMBER IS PROVIDED WITH A SCREW-THREAD; CLAMPING MEANS FITTED ON TO EACH OF SAID TIE MEMBERS AT THE SCREW-THREADED END THEREOF, SAID CLAMPING MEANS ENGAGING AN EDGE OF THE FILTER ELEMENT AND SERVING TO CLAMP SAID FILTER CLOTH, BASE SHEET AND INTERMEDIATE LAYER OF SAID ELEMENT TOGETHER; AND A NUT PROVIDED FOR ENGAGEMENT WITH SAID SCREW-THREAD ON EACH OF SAID TIE MEMBERS FOR SECURING SAID CLAMPING MEANS TO SAID TIE MEMBERS.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |