US3245541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for use under icing conditions
Assignee: Pall Corp
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Filing: 1963-02-04
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Granted: 1966-04-12
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard F Silverwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:12
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; F; F02; F02M; F02M37/00; F02M37/22; F02M37/32; F02M37/34; F02M37/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
A FILTER ASSEMBLY COMPRISING, IN COMBINATION, A HEAD, INLET AND OUTLET PASSAGES THEREIN, A BOWL ATTACHED TO THE HEAD, AN INNER FILTER ELEMENT DISPOSED IN THE BOWL, A CONCENTRICALLY DISPOSED OUTER FILTER ELEMENT, INDDPENDENTLY SUPPORTED WITHIN THE BOWL, A PLATE ATTACHED TO THE INNER FILTER ELEMENT, AND EXTENDING ACROSS THE TOP OF THE OUTER FILTER ELEMENT, AT A POINT SPACED THEREFROM, FORMING A BAFFLE MEANS, AND DEFINING BETWEEN THE HEAD AND THE PLATE A FLOW CHAMBER, AND BETWEEN THE PLATE AND THE INNER FILTER ELEMENT A BY-PASS CHANNEL, THE BY-PASS CHANNEL EXTENDING FROM THE TOP OF THE OUTER FILTER ELEMENT TO THE EXTERIOR SIDE OF THE INNER FILTER ELEMENT AND PROVIDING FOR FLOW OF FLUID FROM THE OUTLET TO THE INNER ELEMENT BY-PASSING THE OUTER FILTER ELEMENT WHENEVER FLUID PASSAGE
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |