US3572014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine air cleaner carbon bed filter element construction
Assignee: Ford Motor Co
•
Filing: 1968-11-01
•
Granted: 1971-03-23
•
Expires: 1988-11-01
Abstract
Abstract An engine air cleaner has an axial flow fuel vapor filter element of activated carbon, the element having an annular bafflelike solid sidewall and perforated screens for the remaining walls; alternately, more than one wall is formed of solid material to restrict fuel vapor breakthrough either to the atmosphere or to the carburetor.
Inventors
- 👤 Gunnar W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:30
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; F02M25/00; F02M25/08; F02M25/0872
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
An assembly as in claim 1, said baffle means extending vertically above said inner filter to inhibit flow of fuel vapors towards said inlet until after the adsorption capacity of said inner filter element has been exceeded.
Claim 2
Dependent Claim
43 words
An assembly as in claim 1, including additional baffle means secured to said inner filter element radially inwardly of said first mentioned baffle means and projecting radially outwardly from said inner filter element to inhibit the flow of fuel vapors towards said outlet.
Claim 3
Dependent Claim
34 words
An assembly as in claim 1, said inner filter being substantially rectangular in cross section with said baffle means being impervious and comprising one side and perforated screen plate means constituting the remaining sides.
Claim 4
Dependent Claim
43 words
An apparatus as in claim 4, including additional baffle means secured to said inner filter element radially inwardly of said first mentioned baffle means and projecting radially outwardly from said inner filter element to inhibit the flow of fuel vapors towards said outlet.
Claim 5
Dependent Claim
51 words
An assembly as in claim 1, including additional concentrically mounted annular impervious baffle means secured to said inner filter element radially inwardly of said first mentioned baffle means to define the axial flow path through said inner filter element and confine said fuel vapors to the space between said baffle means.
Claim 6
Dependent Claim
46 words
An apparatus as in claim 6, including further annular baffle means secured to said housing radially inwardly of said inner filter element and together with said first mentioned and additional baffle means defining a tortuous flow path for the air and fuel vapors towards said outlet.
Claim 7
Dependent Claim
50 words
An assembly as in claim 6, including third concentrically mounted annular baffle means radially spaced inwardly from said additional baffle means and together therewith defining an annular vertically disposed flow channel connected to said lower space for inhibiting the access of fuel vapors in said lower space to said outlet.
References Cited (Backward Citations)
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US2221717A
Cited
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Cited
US3368326A
Cited
US3477210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |