US3334753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter elements
Assignee: Rosaen Filter Co
•
Filing: 1964-09-21
•
Granted: 1967-08-08
•
Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 David R Royer
- 👤 John W Bozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:50
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/04; B01D27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A FILTER ELEMENT COMPRISING (A) A SUBSTANTIALLY CYLINDRICAL SUPPORT MEMBER, (B) A SUBSTANTIALLY CYLINDRICAL FILTER MEMBER CONSTRUCTED TO PROVIDE A PLURALITY OF CIRCUMFERENTIALLY SPACED RADIALLY EXTENDING PLEATS SO THAT THE OUTER EDGES OF SAID PLEATS FORM AN OUTSIDE DIAMETER OF SAID FILTER ELEMENT AND RADIALLY INNERMOST PORTIONS OF SAID FILTER MEMBER FORM AN INSIDE DIAMETER, (C) AN END CAP CARRIED AT EACH OF SAID SUPPORT MEMBER AND COMPRISING AN ANNULAR PERIPHERAL EDGE FORMED ON A DIAMETER SUBSTANTIALLY EQUAL TO THE INSIDE DIAMETER FORMING SAID RADIALLY INNERMOST PORTIONS OF SAID FILTER MEMBER ONE OF SAID END CAPS BEING PROVIDED WITH OUTLET MEANS, (D) EACH OF THE PLEATS OF SAID PLEATED FILTER MEMBER BEING SEALED AT EACH LONGITUDINAL END THEREOF WITH THE SEALED EDGES OF SAID PLEATS EXTENDING RADIALLY BEYOND SAID ENDS CAPS SO THAT THE SPACES BETWEEN ADJACENT PLEATS ARE OPEN AT EACH OF THE FILTER ELEMENT.
Claim 2
Dependent Claim
146 words
A FILTER ELEMENT COMPRISING (A) A SUBSTANTIALLY CYLINDRICAL SUPPORT MEMBER, (B) A SUBSTANTIALLY CYLINDRICAL FILTER MEMBER CONSTRUCTED TO PROVIDE A PLURALITY OF CIRCUMFERENTIALLY SPACED RADIALLY EXTENDING PLEATS SO THAT THE OUTER EDGES OF SAID PLEATS FORM AN OUTSIDE DIAMETER OF SAID FILTER ELEMENT AND RADIALLY INNERMOST PORTIONS OF SAID FILTER MEMBER FORM AN INSIDE DIAMETER, (C) AN END CAP CARRIED AT EACH OF SAID SUPPORT MEMBER AND COMPRISING AN ANNULAR PERIPHERAL EDGE FORMED ON A DIAMETER SUBSTANTIALLY EQUAL TO THE INSIDE DIAMETER FORMING SAID RADIALLY INNERMOST PORTIONS OF SAID FILTER MEMBER ONE OF SAID END CAPS BEING PROVIDED WITH OUTLET MEANS, (D) EACH OF THE PLEATS OF SAID PLEATED FILTER MEMBER BEING SEALED AT EACH LONGITUDINAL END THEREOF WITH THE SEALED EDGES OF SAID PLEATS EXTENDING RADIALLY BEYOND SAID ENDS CAPS SO THAT THE SPACES BETWEEN ADJACENT PLEATS ARE OPEN AT EACH OF THE FILTER ELEMENT.
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |