US3807433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service station vapor collection system
Assignee: Sunoco Inc
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Filing: 1972-08-09
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Granted: 1974-04-30
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Expires: 1992-08-09
Abstract
Abstract The vapors displaced from subterranean storage tanks at service stations, when liquid fuel (gasoline) is delivered into such tanks from a tank truck, are collected in the storage compartments of the tank truck by means of a closed piping system which interconnects the vapor spaces of the subterranean tanks and the vapor spaces of the tank truck storage compartments. Subsequently, the vapors so collected may be transported by the tank truck to a bulk plant or terminal and transferred to a vapor recovery unit at the terminal.
Inventors
- 👤 B Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B67D7/0478; Y; Y10; Y10T; Y10T137/00; Y10T137/4673
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A closed system for delivering liquid from a tank truck compartment to a selected one of a plurlaity of subterranean tanks and for concomitantly collecting vapors from said one tank, comprising a first flow conduit extending between the lower portion of said truck compartment and the lower portion of said one tank, said conduit being constructed and arranged to convey liquid only from said truck compartment to said one tank; a separate riser vent pipe communicating at its inner end with the vapor space at the upper end of each corresponding tank, means manifolding the outer ends of all of said vent pipes together, and means coupling the vapor space at the upper portion of a chosen one of said tanks to the vapor space at the upper portion of said truck compartment, whereby the flow of liquid through said first conduit from said truck compartment into said selected one tank forces vapors to flow from the vapor space of the lastmentioned tank to the vapor space of said truck compartment.
Claim 2
Dependent Claim
171 words
A closed system for delivering liquid from a tank truck compartment to a selected one of a plurlaity of subterranean tanks and for concomitantly collecting vapors from said one tank, comprising a first flow conduit extending between the lower portion of said truck compartment and the lower portion of said one tank, said conduit being constructed and arranged to convey liquid only from said truck compartment to said one tank; a separate riser vent pipe communicating at its inner end with the vapor space at the upper end of each corresponding tank, means manifolding the outer ends of all of said vent pipes together, and means coupling the vapor space at the upper portion of a chosen one of said tanks to the vapor space at the upper portion of said truck compartment, whereby the flow of liquid through said first conduit from said truck compartment into said selected one tank forces vapors to flow from the vapor space of the lastmentioned tank to the vapor space of said truck compartment.
Claim 3
Dependent Claim
90 words
Combination according to claim 1, wherein the system includes a plurality of compartments in said tank truck from a selected one of which liquid may be delivered to said selected one tank, and wherein the last-mentioned means comprises a separate vent valve communicating with the vapor space at the upper portion of each corresponding compartment, means manifolding the outlet sides of all of said vent valves together, and means coupling the vapor space at the upper portion of said chosen one tank to the manifolded sides of said vent valves.
Claim 4
Dependent Claim
19 words
Combination of claim 1, including also a pressure/vacuum vent valve connected to the manifolded ends of said vent pipes.
Claim 5
Dependent Claim
28 words
Combination of claim 1, including also a float valve in said direct coupling means for positively preventing the flow of liquid through such means toward said truck compartment.
Claim 6
Dependent Claim
21 words
Combination set forth in claim 6, including also a pressure/vacuum vent valve connected to the manifolded ends of said vent pipes.
Claim 7
Dependent Claim
19 words
Combination of claim 2, including also a pressure/vacuum vent valve connected to the manifolded sides of said vent valves.
Claim 8
Dependent Claim
19 words
Combination of claim 2, including also a pressure/vacuum vent valve connected to the manifolded ends of said vent pipes.
Claim 9
Dependent Claim
33 words
Combination of claim 2, including also a pressure/vacuum vent valve connected to the manifolded ends of said vent pipes, and a pressure/vacuum vent valve connected to the manifolded sides of said vent valves.
Claim 10
Dependent Claim
49 words
Combination set forth in claim 8, including also a float valve in the coupling between the vapor space of said chosen one tank and the manifolded sides of the vent valves, for positively preventing thE flow of liquid through such coupling toward the manifolded sides of the vent valves.
References Cited (Backward Citations)
US1040463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |