US3352423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter and coalescer element
Assignee: Filters Inc
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Filing: 1965-04-08
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Granted: 1967-11-14
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Expires: 1985-04-08
Abstract
No abstract record available.
Inventors
- 👤 James W Osterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; B01D29/31; B01D29/33; B01D2101/00; B01D2101/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A LIQUID FILTER AND COALESCER ELEMENT COMPRISING A HOLLOW CYLINDRICAL BODY OF FIBROUS MATERIAL, THE FIBERS OF SAID MATERIAL BEING ORIENTED TO EXTEND PREDOMINANTLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL BODY; A PLURALITY OF SPACED APART GROOVES ON THE INNER SURFACE OF SAID BODY AND EXTENDING GENERALLY PARALLEL TO THE FIBER ORIENTATION AND TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL BODY SUBSTANTIALLY THROUGHOUT THE LENGTH THEREOF, SAID GROOVES HAVING A DEPTH OF THE ORDER OF ONE HALF THE THICKNESS OF SAID BODY OF FIBROUS MATERIAL; A PLURALITY OF SPACED APART SLITS ON THE OUTER SURFACE OF SAID CYLINDRICAL BODY AND EXTENDING GENERALLY PARALLEL TO SAID GROOVES AND BEING DISPOSED TO EXTEND INTERMEDIATE SAID GROOVES SO THAT THE INNERMOST PORTION OF EACH OF SAID SLITS IS INTERDIGITATED BETWEEN THE INNERMOST PORTIONS OF ADJACENT ONES OF SAID GROOVES; AND MEANS FOR CAUSING THE LIQUID TO BE FILTERED AND COALESCED TO FLOW SUBSTANTIALLY IN A RADIAL DIRECTION THROUGH THE ELEMENT.
Claim 2
Dependent Claim
159 words
A LIQUID FILTER AND COALESCER ELEMENT COMPRISING A HOLLOW CYLINDRICAL BODY OF FIBROUS MATERIAL, THE FIBERS OF SAID MATERIAL BEING ORIENTED TO EXTEND PREDOMINANTLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL BODY; A PLURALITY OF SPACED APART GROOVES ON THE INNER SURFACE OF SAID BODY AND EXTENDING GENERALLY PARALLEL TO THE FIBER ORIENTATION AND TO THE LONGITUDINAL AXIS OF SAID CYLINDRICAL BODY SUBSTANTIALLY THROUGHOUT THE LENGTH THEREOF, SAID GROOVES HAVING A DEPTH OF THE ORDER OF ONE HALF THE THICKNESS OF SAID BODY OF FIBROUS MATERIAL; A PLURALITY OF SPACED APART SLITS ON THE OUTER SURFACE OF SAID CYLINDRICAL BODY AND EXTENDING GENERALLY PARALLEL TO SAID GROOVES AND BEING DISPOSED TO EXTEND INTERMEDIATE SAID GROOVES SO THAT THE INNERMOST PORTION OF EACH OF SAID SLITS IS INTERDIGITATED BETWEEN THE INNERMOST PORTIONS OF ADJACENT ONES OF SAID GROOVES; AND MEANS FOR CAUSING THE LIQUID TO BE FILTERED AND COALESCED TO FLOW SUBSTANTIALLY IN A RADIAL DIRECTION THROUGH THE ELEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |