Patent US3244282A successfully refreshed from Google Patents.
US3244282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid filter devices
Assignee: Rosaen Filter Co
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Filing: 1963-03-04
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Granted: 1966-04-05
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:00
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; B01D35/147; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A DEVICE ADAPTED FOR USE IN A FLUID SYSTEM COMPRISING (A) A HOUSING DEFINING AN INLET, AN OUTLER, A CHAMBER AND HAVING A FIXED VALVE SEAT, (B) AN ELEMENT REMOVABLY CARRIED IN SAID CHAMBER, (C) A TUBULAR EXTENSION CARRIED BY SAID HOUSING AND INTO SAID CHAMBER, (D) A VALVE ELEMENT SLIDABLY CARRIED ON SAID TUBULAR EXTENSION AND OPERABLE TO NORMALLY DIRECT FLUID FLOW FROM SAID INLET THROUGH SAID CHAMBER AND OUT SAID OUTLET MEANS TO MOVE SAID ELEMENT TO A POSITION ENGAGING SAID FIXED VALVE SEAT TO CLOSE FLUID FLOW FROM SAID INLET TO SAID CHAMBER UPON REMOVAL OF SAID ELEMENT, AND (E) MEANS CARRIED BY SAID VALVE ELEMENT AND ENGAGING SAID TUBULAR ELEMENT TO MAINTAIN THE MOVEMENT OF SAID VALVE ELEMENT SUFFICIENTLY COEXIAL WITH THE AXIS OF SAID TUBULAR EXTENSION TO PREVENT SAID VALVE ELEMENT FROM BECOMING LOCKED IN AN INTERMEDIATE POSI-
Claim 2
Independent Claim
143 words
A DEVICE ADAPTED FOR USE IN A FLUID SYSTEM COMPRISING (A) A HOUSING DEFINING AN INLET, AN OUTLER, A CHAMBER AND HAVING A FIXED VALVE SEAT, (B) AN ELEMENT REMOVABLY CARRIED IN SAID CHAMBER, (C) A TUBULAR EXTENSION CARRIED BY SAID HOUSING AND INTO SAID CHAMBER, (D) A VALVE ELEMENT SLIDABLY CARRIED ON SAID TUBULAR EXTENSION AND OPERABLE TO NORMALLY DIRECT FLUID FLOW FROM SAID INLET THROUGH SAID CHAMBER AND OUT SAID OUTLET MEANS TO MOVE SAID ELEMENT TO A POSITION ENGAGING SAID FIXED VALVE SEAT TO CLOSE FLUID FLOW FROM SAID INLET TO SAID CHAMBER UPON REMOVAL OF SAID ELEMENT, AND (E) MEANS CARRIED BY SAID VALVE ELEMENT AND ENGAGING SAID TUBULAR ELEMENT TO MAINTAIN THE MOVEMENT OF SAID VALVE ELEMENT SUFFICIENTLY COEXIAL WITH THE AXIS OF SAID TUBULAR EXTENSION TO PREVENT SAID VALVE ELEMENT FROM BECOMING LOCKED IN AN INTERMEDIATE POSI-
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |