US3581782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor emission control system
Assignee: Russell Burdsall and Ward Bolt and Nut Co
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Filing: 1968-12-23
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Granted: 1971-06-01
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Expires: 1988-12-23
Abstract
Abstract A vapor emission control system suitable for gasoline and other fuel delivery systems, adapted to eliminate the escape of fuel vapors to the atmosphere, and permit utilization of these vapors by the system. The disclosed embodiment of the control system includes a delivery conduit or line having a fuel delivery nozzle, an annular sealing means encircling the nozzle adapted to seal the nozzle within the opening to the container or tank, a vapor return line which may be vacuum operated, and a filter or other means adapted to store the vapors. In the disclosed embodiment of the nozzle assembly, the sealing means includes a flexible annular sleeve which is received within the container opening. The sleeve is expandable in one of the disclosed embodiments to seal the tank opening. In another embodiment, the sealing means is provided with a spring-tensioned annular sealing ring adapted to seal the opening to the tank. In the latter embodiment, the vapors are conducted through apertures in the sleeve to the vapor return line.
Inventors
- 👤 George R Onufer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:26
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B67D7/06; B67D7/42; B67D7/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
The vapor emission control system defined in claim 1 characterized in that said sealing means includes a flexible annular sealing sleeve, disposed about said nozzle and adapted to be received within the holding tank opening, and an annular sealing portion adapted to sealingly engage the exterior of the holding tank opening.
Claim 2
Dependent Claim
32 words
The vapor emission control system defined in claim 2, characterized in that said flexible annular sealing sleeve is expandable and tensioned radially outwardly to seal said nozzle within the holding tank opening.
Claim 3
Dependent Claim
52 words
The vapor emission control system defined in claim 3, characterized in that said nozzle includes an opening communicating with the interior of said annular sealing sleeve and a fluid passage restriction downstream of said opening adapted to expand said sleeve radially outwardly under fluid pressure when fluid is passed through said conduit.
Claim 4
Dependent Claim
50 words
The vapor emission control system defined in claim 2, characterized in that the end of said annular sealing sleeve is secured to the nozzle, and said sleeve includes a spring means biasing said sealing portion toward the free end of the nozzle into sealing engagement about the holding tank opening.
Claim 5
Dependent Claim
59 words
The vapor emission control system defined in claim 5, characterized in that said sealing portion is a flexible annular ring, and said sealing means includes a bellows portion secured to said sealing ring opposite said sleeve and to said conduit opposite said ring portion, permitting axial movement of said ring portion into sealing engagement adjacent the holding tank opening.
Claim 6
Dependent Claim
48 words
The vapor emission control system defined in claim 6, characterized in that said vapor return line is received within said bellows portion in communication with the interior of said ring portion and said sleeve portion, and said Sleeve portion includes an aperture establishing communication with said holding tank.
Claim 7
Dependent Claim
26 words
The vapor emission control system defined in claim 1, characterized in that said filter means communicates with the delivery tank, to permit transfer of vapors therebetween.
Claim 8
Dependent Claim
41 words
The vapor emission control system defined in claim 1, characterized in that said means for storing fuel vapors communicates with said delivery tank to permit stripping of the vapors from the fuel storing means and return to the fuel delivery tank.
Claim 9
Dependent Claim
26 words
The vapor emission control system defined in claim 9, characterized in that said means for storing fuel vapors is heated to aid in the stripping process.
Claim 10
Dependent Claim
61 words
The vapor emission control system defined in claim 1, characterized in that said delivery tank is the bulk fuel storage tank of a fuel delivery truck, and said means for storing fuel vapors communicates with the vacuum side of the carburetor of the delivery truck to draw the vapors stored in the storage means into the intake of the truck engine.
Claim 11
Dependent Claim
32 words
The fuel vapor control system defined in claim 1, characterized in that said delivery tank is an underground fuel storage tank, and said holding tank is the fuel tank of a vehicle.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |