US3572013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel vapor emission control
Assignee: Ford Motor Co
•
Filing: 1968-10-22
•
Granted: 1971-03-23
•
Expires: 1988-10-22
Abstract
Abstract An engine air cleaner has a ringlike carbon bed filter element to absorb fuel vapors, a baffle member assuring saturation of the filter before vapor breakthrough to the atmosphere, the filter element being desorbed or purged of the vapors during normal air flow through the air cleaner.
Inventors
- 👤 Gunnar W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:29
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; Y; Y10; Y10T; Y10T279/00; Y10T279/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
35 words
An assembly as in claim 1, said baffle means extending vertically beyond the thickness of said inner element to assure saturation of said carbon bed with fuel vapors before overflow of vapors towards said inlet.
Claim 2
Dependent Claim
18 words
An assembly as in claim 1, said baffle means being sealingly secured to said housing adjacent said inlet.
Claim 3
Dependent Claim
18 words
An assembly as in claim 1, said baffle means being sealingly secured to said housing between said elements.
Claim 4
Dependent Claim
29 words
An assembly as in claim 1, including additional annular baffle means secured to said housing radially inwardly of said inner element to retard flow of vapors towards said outlet.
Claim 5
Dependent Claim
19 words
An assembly as in claim 7, said additional baFfle means extending vertically beyond the thickness of said inner element.
References Cited (Backward Citations)
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US2896742A
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Cited
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Cited
US3448731A
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 |