US3756291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline vapor recovery system
Assignee: Texaco Inc
•
Filing: 1971-10-27
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Granted: 1973-09-04
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Expires: 1991-10-27
Abstract
Abstract Apparatus for preventing pollution of the atmosphere caused by passage of gasoline fumes thereto. The apparatus is operable in conjunction with a gasoline dispensing pump which connects to the fuel tank of a vehicle. Fumes from the fuel tank are conducted therefrom and introduced to the flow of liquid gasoline as the latter is withdrawn from a storage truck or the like.
Inventors
- 👤 Gahey D Mc
- 👤 E Vest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:47
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B67D7/0478; B67D7/048; B67D7/0482
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
In a fuel dispensing system for transferring a volatile liquid fuel from a source thereof, to a closed fuel tank having an inlet opening (40), a nozzle (38), having a fuel conduit (36) depending therefrom, the latter being communicated with said fuel source, the improvement in said fuel dispensing system for recovering fuel vapors during a transfer operation, which comprises; a. means for fluid tightly sealing said nozzle (38) with said closed fuel tank inlet opening (40), b. a vapor release conduit (44) connected to said nozzle (38), and having an inlet communicated with said fuel tank interior when nozzle (38) is disposed in sealing engagement with inlet opening (40), c. a surge chamber (20) connected intermediate said fuel source and said fuel tank to maintain a reservoir of liquid and vaporous fuel therein, d. a diffuser compartment (58) communicated respectively with said surge chamber (20) to receive fuel vapors therefrom, and with a source of a diluting gas (54), whereby to form a mixture of said fuel vapors and said diluting gas prior to venting of the mixture into the atmosphere.
Claim 2
Dependent Claim
182 words
In a fuel dispensing system for transferring a volatile liquid fuel from a source thereof, to a closed fuel tank having an inlet opening (40), a nozzle (38), having a fuel conduit (36) depending therefrom, the latter being communicated with said fuel source, the improvement in said fuel dispensing system for recovering fuel vapors during a transfer operation, which comprises; a. means for fluid tightly sealing said nozzle (38) with said closed fuel tank inlet opening (40), b. a vapor release conduit (44) connected to said nozzle (38), and having an inlet communicated with said fuel tank interior when nozzle (38) is disposed in sealing engagement with inlet opening (40), c. a surge chamber (20) connected intermediate said fuel source and said fuel tank to maintain a reservoir of liquid and vaporous fuel therein, d. a diffuser compartment (58) communicated respectively with said surge chamber (20) to receive fuel vapors therefrom, and with a source of a diluting gas (54), whereby to form a mixture of said fuel vapors and said diluting gas prior to venting of the mixture into the atmosphere.
Claim 3
Dependent Claim
46 words
In a fuel dispensing system as defined in claim 1, including; pump means (54) having a suction inlet communicated with said source of diluting gas, and a discharge outlet (56) communicated with said surge chamber whereby to introduce said diluting gas into said surge chamber (20).
Claim 4
Dependent Claim
19 words
In a fuel dispensing system as defined in claim 1, wherein said source of diluting gas is atmospheric air.
Claim 5
Dependent Claim
45 words
In a fuel dispensing system as defined in claim 1, including; valve means (28) communicating said surge chamber (20) with said diffuser (58), to regulate passage of vapor to the latter in response to the volume of liquid fuel held within said surge chamber (20).
Claim 6
Dependent Claim
30 words
In a fuel dispensing system as defined in claim 1, including; pump means (48) communicated with said vapor release conduit (44), being operable to pump vapors from said fueL tank.
Claim 7
Dependent Claim
58 words
In a fuel dispensing system as defined in claim 1, including; conduit means (32, 36) communicating said nozzle (38) with said surge chamber (20) to carry a stream of liquid fuel to said surge chamber, and motor means (34) interposed in said conduit means (32, 36) to be drivingly actuated by said stream of liquid fuel passing therethrough.
Claim 8
Dependent Claim
67 words
In a fuel dispensing system as defined in claim 1, wherein said source of diluting gas includes; a pump (54) having suction inlet communicated with and receiving a diluting gas, and a discharge conduit (56) communicated with said diffuser (58), said respective pump means (54) and motor means (34) being drivingly connected to be mutually actuated by said flow of liquid fuel through said conduit (32, 36).
Claim 9
Dependent Claim
64 words
In a fuel dispensing system as defined in claim 7, including; pump means (48) having a suction inlet communicated with said vapor release conduit (44), and the discharge thereof communicated with said source of fuel, said pump means (48) being drivingly connected to said motor means (34) whereby to be actuated in response to passage of liquid fuel through said conduit means (32, 36).
References Cited (Backward Citations)
US3106071A
Cited
US3672180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |