Patent US3831353A successfully refreshed from Google Patents.
US3831353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel vapor control device
Assignee: Ford Motor Co
•
Filing: 1972-10-04
•
Granted: 1974-08-27
•
Expires: 1992-10-04
Abstract
Abstract A canister containing a fuel vapor adsorbent has a fuel vapor inlet, a fresh air inlet and a purge vapor outlet. It additionally contains a baffle between the vapor inlet and purge outlet to prevent direct communication of fuel vapors to the purge outlet while forcing the flow of fuel vapors through the adsorbent.
Inventors
- 👤 R Toth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:07
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/0854; Y; Y10; Y10S; Y10S55/00; Y10S55/28; Y10S55/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
A fuel vapor loss control device for use with a motor vehicle fuel system to control the emission of fuel vapors, comprising, a hollow closed canister containing vapor adsorbent material centrally located to provide chambers at opposite ends, first tube means having an air inlet at one end of the canister and projecting through the canister to the other end for connecting purge air from outside the canister to the other end chamber, second tube means at the one end of the canister connected to the adjacent one end chamber for the purge flow of desorbed vapors therefrom, additional inlet means to the one chamber containing fuel vapors to be adsorbed at a higher pressure than the pressure level in the second tube means thereby effecting flow therebetween, and vapor barrier means comprising a baffle in the one end chamber between the second and additional inlets preventing direct communication between the two and forcing flow of fuel vapors through the adsorbent.
Claim 2
Dependent Claim
161 words
A fuel vapor loss control device for use with a motor vehicle fuel system to control the emission of fuel vapors, comprising, a hollow closed canister containing vapor adsorbent material centrally located to provide chambers at opposite ends, first tube means having an air inlet at one end of the canister and projecting through the canister to the other end for connecting purge air from outside the canister to the other end chamber, second tube means at the one end of the canister connected to the adjacent one end chamber for the purge flow of desorbed vapors therefrom, additional inlet means to the one chamber containing fuel vapors to be adsorbed at a higher pressure than the pressure level in the second tube means thereby effecting flow therebetween, and vapor barrier means comprising a baffle in the one end chamber between the second and additional inlets preventing direct communication between the two and forcing flow of fuel vapors through the adsorbent.
Claim 3
Dependent Claim
56 words
A fuel vapor control device as in claim 1, the baffle comprising an open cell material of predetermined porosity providing restricted purge of fuel vapors through it from the opposite end chamber space on the side of the baffle adjacent the additional inlet to the opposite end chamber space on the other side of the baffle.
Claim 4
Dependent Claim
25 words
A fuel vapor control device as in claim 1, the baffle comprising a compressible material rendering it universally adaptable to variable density loads of adsorbent.
Claim 5
Dependent Claim
65 words
A fuel vapor control device as in claim 1, the baffle comprising a soft spongy material with small porosity providing sufficiently high restriction to flow of air and fuel vapors therethrough to prevent the free flow therethrough, the porosity permitting the purge of air and fuel vapors from the area in the opposite end chamber behind the baffle to the other side of the baffle.
Claim 6
Dependent Claim
31 words
A fuel vapor control device as in claim 4, the baffle comprising an open cell foam material dividing the opposite end chamber into two parts each associated with a separate inlet.
Claim 7
Dependent Claim
26 words
A fuel vapor control device as in claim 1, the end chambers comprising vapor manifolds for evenly distributing the flow of fuel vapors to the adsorbent.
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |