Patent US3662794A successfully refreshed from Google Patents.
US3662794A
Expired / Lapsed
US
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Vapor control system for an underground storage tank
Assignee: Individual
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Filing: 1970-11-23
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Granted: 1972-05-16
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Expires: 1990-11-23
Abstract
Abstract A vapor control system for an underground storage tank for gasoline or the like. In this system the underground tank is provided with a vent pipe having its discharge end disposed within an exhaust chamber arranged closely adjacent the ground. This eliminates the conventional comparatively tall vent stack which permits air to escape into the atmosphere as the underground storage tank is filled with gasoline or the like. The vapor control system also includes a vapor discharge pipe that extends from the underground storage tank to the interior of the delivery truck to transfer vapors displaced from the tank into the truck as the tank is filled by the truck.
Inventors
- 👤 Deane S Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:56
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B65; B65D; B65D90/00; B65D90/22; B65D90/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A vapor control system for an underground storage tank and a movable delivery vessel of a volatile liquid, comprising: a vent pipe for said tank, said vent pipe having a discharge end disposed closely adjacent the ground level; a liquid inlet pipe on said tank that is connected to said delivery vessel to transfer said liquid from said vessel into said tank; a vapor discharge pipe extending from the upper portion of said tank that is connected to said delivery vessel to transfer into said delivery vessel the vapors displaced from said tank as said liquid is introduced into said tank through said inlet pipe; and valve means controlling flow through said vent pipe, said valve means automatically opening when said liquid is withdrawn from said tank to admit air into said tank as said liquid is removed.
Claim 2
Dependent Claim
138 words
A vapor control system for an underground storage tank and a movable delivery vessel of a volatile liquid, comprising: a vent pipe for said tank, said vent pipe having a discharge end disposed closely adjacent the ground level; a liquid inlet pipe on said tank that is connected to said delivery vessel to transfer said liquid from said vessel into said tank; a vapor discharge pipe extending from the upper portion of said tank that is connected to said delivery vessel to transfer into said delivery vessel the vapors displaced from said tank as said liquid is introduced into said tank through said inlet pipe; and valve means controlling flow through said vent pipe, said valve means automatically opening when said liquid is withdrawn from said tank to admit air into said tank as said liquid is removed.
Claim 3
Dependent Claim
28 words
A vapor control system as set forth in claim 1 wherein a vapor sensing device is disposed adjacent said vent pipe to detect escape of said volatile liquid.
Claim 4
Dependent Claim
35 words
A vapor control system as set forth in claim 1 wherein the upper end of said vent pipe is provided with a generally inverted U-shaped fitting and said valve means is carried by said fitting.
Claim 5
Dependent Claim
44 words
A vapor control system as set forth in claim 1 wherein the upper end of said vent pipe is disposed in a manhole and a vapor sensing device is positioned in said manhole adjacent said vent pipe to detect escape of said volatile liquid.
Claim 6
Dependent Claim
35 words
A vapor control system as set forth in claim 4 wherein the upper end of said vent pipe is provided with a generally inverted U-shaped fitting and said valve means is carried by said fitting.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |