Patent US3562895A successfully refreshed from Google Patents.
US3562895A
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Assignee: Tenneco Inc
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Filing: 1969-05-21
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Granted: 1971-02-16
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Expires: 1989-05-21
Abstract
Abstract A HIGH FLOW MOLDED ELEMENT FORMED OF UNIFORM DIAMETER RESIN COATED VISCOSE RAYON FIBERS IS USED IN A PARALLEL DUAL MEDIA-DUAL FLOW FILTER TO REMOVE PARTICLES ABOVE A PREDETERMINED SIZE. THE ELEMENT IS MADE TO A PREDETERMINED SIZE, DENSITY, POROSITY, AND FLOW RESISTANCE AND BEING ESSENTIALLY RIGID IT RESISTS UNLOADING. IT MAY BE CONICALLY SHAPED TO HAVE A SUBSTANTIALLY UNIFORM RATE OF FLOW OR INTERNALLY FLOCKED TO PROVIDE MORE UNIFORM POROSITY. AN END CAP MAY BE ADHERED TO THE ELEMENT AS A SUBSASSEMBLY AND THE INLET AND OUTLET FACES ARE PREFERABLY SPACED FROM ADJACENT PORTIONS OF THE HOUSING TO INSURE FLOW TO THE ENTIRE AREAS OF THESE FACES.
Inventors
- 👤 Louis F Niebergall
- 👤 James C Mclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:01
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/163; B01D27/00; B01D27/005; B01D27/02; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/56; B01D29/58; B01D37/00; B01D37/02; B01D2201/00; B01D2201/18; B01D2201/182; B01D2201/29; B01D2201/291; B01D2201/293; Y; Y10; Y10S; Y10S493/00; Y10S493/941; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801; Y10T29/49826; Y10T29/49879; Y10T29/49908; Y10T29/49915
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |