US3678663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner remote from engine and having integrated fuel vapor adsorption means
Assignee: Ford Motor Co
•
Filing: 1970-09-02
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Granted: 1972-07-25
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Expires: 1990-09-02
Abstract
Abstract The engine air cleaner is positioned remote from but connected to the engine in essentially a side-by-side relationship. The air cleaner is vertically disposed to define a lower reservoir that traps excess fuel vapors flowing thereinto from the carburetor, and contains a vapor adsorption means to store the vapors and subsequently return them to the engine.
Inventors
- 👤 Gunnar W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:49
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M35/00; F02M35/02; F02M35/04; Y; Y10; Y10S; Y10S55/00; Y10S55/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
An engine air cleaner assembly that is remotely located from the air inlet portion of an engine carburetor but connected thereto by duct means, comprising an essentially vertically disposed casing having a horizontal axis and an air inlet adjacent the top thereof on one side and an outlet on the other side connected to the duct means, and a depending body portion, a filter element extending from top to bottom of the casing for axial flow through the casing and means for creating flow through the casing in essentially a U-shaped path, the lower portion of said assembly constituting a vapor trap type reservoir for containment of excess fuel vapors adapted to pass thereinto from said outlet, and fuel vapor adsorption means associated with the said reservoir in the depending portion for storing the fuel vapors flowing at times by gravity into said reservoir from said outlet and carburetor, said fuel vapors being purged from said adsorption means upon air flow in a normal direction from said air cleaner assembly to said outlet during normal engine operation.
Claim 2
Dependent Claim
177 words
An engine air cleaner assembly that is remotely located from the air inlet portion of an engine carburetor but connected thereto by duct means, comprising an essentially vertically disposed casing having a horizontal axis and an air inlet adjacent the top thereof on one side and an outlet on the other side connected to the duct means, and a depending body portion, a filter element extending from top to bottom of the casing for axial flow through the casing and means for creating flow through the casing in essentially a U-shaped path, the lower portion of said assembly constituting a vapor trap type reservoir for containment of excess fuel vapors adapted to pass thereinto from said outlet, and fuel vapor adsorption means associated with the said reservoir in the depending portion for storing the fuel vapors flowing at times by gravity into said reservoir from said outlet and carburetor, said fuel vapors being purged from said adsorption means upon air flow in a normal direction from said air cleaner assembly to said outlet during normal engine operation.
Claim 3
Dependent Claim
25 words
A system as in claim 1, including baffle means extending between said casing air inlet and said outlet to divert fuel vapors into said reservoir.
Claim 4
Dependent Claim
15 words
A system as in claim 1, said vapor adsorption means comprising an activated caRbon bed.
Claim 5
Dependent Claim
34 words
A system as in claim 1, said adsorption means comprising an activated carbon bed having a fresh air inlet at one end and being operatively associated with the fuel vapors at the other end.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |