US3170777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for filter tubes
Assignee: DUCON CO
•
Filing: 1961-08-14
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Granted: 1965-02-23
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Hans J Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/70; B01D2265/00; B01D2265/02; B01D2265/022; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A MOUNTING FOR FILTER TUBES COMPRISING UPPER AND LOWER PLATES, SAID PLATES BEING SUBSTANTIALLY PARALLEL TO EACH OTHER AND HAVING ALIGNED HOLES THERETHROUGH, AN OUTER TUBULAR COLLAR EXTENDING THROUGH A HOLE IN SAID UPPER PLATE, ONE END PORTION OF A FILTER TUBE OF FLEXIBLE MATERIAL EXTENDING THROUGH SAID COLLAR, AN INNER COLLAR DISPOSED WITHIN SAID ONE END OF SAID TUBE, A FLANGE ON SAID INNER COLLAR, SAID FLANGE BEING JUXTAPOSED TO THE UPPER SURFACE OF A PORTION OF SAID UPPER PLATE WITH A PORTION OF SAID TUBE DISPOSED THEREBETWEEN, A SECOND INNER COLLAR EXTENDING THROUGH A HOLE IN SAID LOWER PLATE, SAID SECOND INNER COLLAR HAVING A RADIALLY OUTWARDLY DIRECTED FLANGE AT ITS LOWER END JUXTAPOSED TO THE LOWERMOST SURFACE OF SAID LOWER PLATE AJDACENT THE HOLE IN SAID LOWER PLATE, THE OTHER END PORTION OF SAID TUBE SURROUNDING SAID SECOND INNER COLLAR, A SECOND OUTER COLLAR SURROUNDING SAID OTHER END PORTION OF SAID TUBE, MEANS RELEASABLY SECURING SAID
Claim 2
Dependent Claim
159 words
A MOUNTING FOR FILTER TUBES COMPRISING UPPER AND LOWER PLATES, SAID PLATES BEING SUBSTANTIALLY PARALLEL TO EACH OTHER AND HAVING ALIGNED HOLES THERETHROUGH, AN OUTER TUBULAR COLLAR EXTENDING THROUGH A HOLE IN SAID UPPER PLATE, ONE END PORTION OF A FILTER TUBE OF FLEXIBLE MATERIAL EXTENDING THROUGH SAID COLLAR, AN INNER COLLAR DISPOSED WITHIN SAID ONE END OF SAID TUBE, A FLANGE ON SAID INNER COLLAR, SAID FLANGE BEING JUXTAPOSED TO THE UPPER SURFACE OF A PORTION OF SAID UPPER PLATE WITH A PORTION OF SAID TUBE DISPOSED THEREBETWEEN, A SECOND INNER COLLAR EXTENDING THROUGH A HOLE IN SAID LOWER PLATE, SAID SECOND INNER COLLAR HAVING A RADIALLY OUTWARDLY DIRECTED FLANGE AT ITS LOWER END JUXTAPOSED TO THE LOWERMOST SURFACE OF SAID LOWER PLATE AJDACENT THE HOLE IN SAID LOWER PLATE, THE OTHER END PORTION OF SAID TUBE SURROUNDING SAID SECOND INNER COLLAR, A SECOND OUTER COLLAR SURROUNDING SAID OTHER END PORTION OF SAID TUBE, MEANS RELEASABLY SECURING SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |