US2710693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous filter drum construction
Assignee: Texaco Inc
•
Filing: 1952-04-22
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Granted: 1955-06-14
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Manley
- 👤 Harry R Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/067; B01D33/073; B01D33/09; B01D2201/00; B01D2201/28; B01D2201/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A DRUM TYPE CONTINUOUS SECTIONAL FILTER WHEREIN THE FILTER SECTIONS ARE SEPARATED BY ANNULARLY SPACED, LONGITUDINALLY EXTENDING, DIVISION STRIPS AT THE PERIPHERY OF THE CYLINDRICAL DRUM, THE IMPROVEMENT WHICH COMPRISES A FILTER CLOTH EXTENDING ABOUT THE SURFACE OF THE DRUM, AND EMBRACING A PLURALITY OF SAID FILTER SECTIONS, A PROJECTING FLAP OF FLEXIBLE SHEET MATERIAL ATTACHED TO AND PROJECTING FROM THE INNER SURFACE OF SAID FILTER CLOTH IN THE VICINITY OF EACH DIVISION STRIP AND MEANS ASSOCIATED WITH EACH DIVISION STRIP TO GRIP SAID RESPECTIVE FLAP AND HOLD THE FILTER CLOTH IN OPERATIVE POSITION.
Claim 2
Dependent Claim
95 words
IN A DRUM TYPE CONTINUOUS SECTIONAL FILTER WHEREIN THE FILTER SECTIONS ARE SEPARATED BY ANNULARLY SPACED, LONGITUDINALLY EXTENDING, DIVISION STRIPS AT THE PERIPHERY OF THE CYLINDRICAL DRUM, THE IMPROVEMENT WHICH COMPRISES A FILTER CLOTH EXTENDING ABOUT THE SURFACE OF THE DRUM, AND EMBRACING A PLURALITY OF SAID FILTER SECTIONS, A PROJECTING FLAP OF FLEXIBLE SHEET MATERIAL ATTACHED TO AND PROJECTING FROM THE INNER SURFACE OF SAID FILTER CLOTH IN THE VICINITY OF EACH DIVISION STRIP AND MEANS ASSOCIATED WITH EACH DIVISION STRIP TO GRIP SAID RESPECTIVE FLAP AND HOLD THE FILTER CLOTH IN OPERATIVE POSITION.
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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) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |