Patent US6948174B2 successfully refreshed from Google Patents.
Patent US3194401A successfully refreshed from Google Patents.
US3194401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel filter
Assignee: BAY PRODUCTS DEV CO
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Filing: 1961-10-06
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Granted: 1965-07-13
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Expires: 1981-10-06
Abstract
No abstract record available.
Inventors
- 👤 Oscar H Banker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D2201/00; B01D2201/02; B01D2201/30; B01D2201/301; B01D2201/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FILTER ASSEMBLY COMPRISING A HOUSING HAVING INLET AND OUTLET OPENINGS, A FIRST CHAMBER OPEN TO ATMOSPHERE AND COMMUNICATING WITH THE INLET OPENING, AND A SECOND CHAMBER OPEN TO ATMOSPHERE AND CONNECTED TO THE OUTLET OPENING, SAID SECOND CHAMBER INCLUDING A VERTICALLY DISPOSED OPENING, A FILTER ELEMENT CLOSING THE VERTICALLY DISPOSED OPENING TO THE INLET CHAMBER, SAID FILTER ELEMENT COMPRISING A PAIR OF SECTIONS OF PLEATED POROUS MATERIAL EXTENDING UPWARDLY FROM A COMMON CONNECTING SECTION OF POROUS MATERIAL, A RIGID CLOSURE MEMBER EMBRACING THE SIDES AND STOP OF THE PLEATED SECTIONS AND EXTENDING TO OPPOSITE SIDES OF THE COMMON CONNECTING SECTION, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE FILTER ELEMENT AND CLOSURE MEMBER, SAID CLOSURE MEMBER HAVING AN OPENING IN COMMUNICATION WITH THE VERTICALLY DISPOSED OPENING IN THE SECOND CHAMBER, MEANS FOR EFFECTING A SEAL BETWEEN THE CLOSURE MEMBER AND HOUSING AROUND THE OPENING IN THE SAID SECOND CHAMBER, AND A BOWL ENCLOSING THE FILTER ELEMENT AND REMOVABLY SECURED TO THE HOUSING, A PORTION OF SAID HOUSING EXTENDING INTO THE BOWL AND SAID PORTION DISPLACING SUBSTANTIALLY THE SAME VOLUME OF FLUID AS IS CONTAINED IN SAID FIRST AND SECOND CHAMBERS.
Claim 2
Dependent Claim
190 words
A FILTER ASSEMBLY COMPRISING A HOUSING HAVING INLET AND OUTLET OPENINGS, A FIRST CHAMBER OPEN TO ATMOSPHERE AND COMMUNICATING WITH THE INLET OPENING, AND A SECOND CHAMBER OPEN TO ATMOSPHERE AND CONNECTED TO THE OUTLET OPENING, SAID SECOND CHAMBER INCLUDING A VERTICALLY DISPOSED OPENING, A FILTER ELEMENT CLOSING THE VERTICALLY DISPOSED OPENING TO THE INLET CHAMBER, SAID FILTER ELEMENT COMPRISING A PAIR OF SECTIONS OF PLEATED POROUS MATERIAL EXTENDING UPWARDLY FROM A COMMON CONNECTING SECTION OF POROUS MATERIAL, A RIGID CLOSURE MEMBER EMBRACING THE SIDES AND STOP OF THE PLEATED SECTIONS AND EXTENDING TO OPPOSITE SIDES OF THE COMMON CONNECTING SECTION, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE FILTER ELEMENT AND CLOSURE MEMBER, SAID CLOSURE MEMBER HAVING AN OPENING IN COMMUNICATION WITH THE VERTICALLY DISPOSED OPENING IN THE SECOND CHAMBER, MEANS FOR EFFECTING A SEAL BETWEEN THE CLOSURE MEMBER AND HOUSING AROUND THE OPENING IN THE SAID SECOND CHAMBER, AND A BOWL ENCLOSING THE FILTER ELEMENT AND REMOVABLY SECURED TO THE HOUSING, A PORTION OF SAID HOUSING EXTENDING INTO THE BOWL AND SAID PORTION DISPLACING SUBSTANTIALLY THE SAME VOLUME OF FLUID AS IS CONTAINED IN SAID FIRST AND SECOND CHAMBERS.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |