US4685327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Total containment storage tank system
Assignee: Modern Welding Co Inc
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Filing: 1986-01-21
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Granted: 1987-08-11
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Expires: 2006-01-21
Abstract
Abstract A storage tank system especially useful for storing liquid gasoline comprises a rigid inner tank having a manhead, a dispensing line extending through the manhead, a sleeve encompassing the manhead, and a jacket encasing the tank and at least part of the sleeve. A leak detector is associated with the closed space between the inner tank and jacket to detect leaks. The system results in a storage facility which is less likely to lose its stored liquid to the environment due to a slow leak or sudden large leak such as is possible with an earthquake and provides total containment capability.
Inventors
- 👤 Bruce R. Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:40
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/48; B65D90/50; B65D90/501; B65D90/503; B65D90/505; B65D90/507; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22; G01M3/226; G01M3/26; G01M3/32
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
155 words
A storage tank system having total secondary containment means comprised of: (a) a rigid inner storage tank having a manhead for access to the interior of the tank; (b) a sleeve attached to the rigid storage tank which encompasses the manhead, said sleeve having a cover which forms a water-tight seal and an opening through which a dispensing line passes; (c) a dispensing line extending through the opening in the sleeve in a sealed fashion and then through the storage tank to the interior thereof for dispensing liquid from the storage tank; (d) a jacket encasing the storage tank and extending at least to the sleeve so that a closed space exists between the storage tank and jacket whereby any leakage which occurs through the storage tank or manhead will be contained by the jacket and/or sleeve; and (e) a leak detection means in communication with the closed space between the storage tank and jacket.
Claim 2
Dependent Claim
155 words
A storage tank system having total secondary containment means comprised of: (a) a rigid inner storage tank having a manhead for access to the interior of the tank; (b) a sleeve attached to the rigid storage tank which encompasses the manhead, said sleeve having a cover which forms a water-tight seal and an opening through which a dispensing line passes; (c) a dispensing line extending through the opening in the sleeve in a sealed fashion and then through the storage tank to the interior thereof for dispensing liquid from the storage tank; (d) a jacket encasing the storage tank and extending at least to the sleeve so that a closed space exists between the storage tank and jacket whereby any leakage which occurs through the storage tank or manhead will be contained by the jacket and/or sleeve; and (e) a leak detection means in communication with the closed space between the storage tank and jacket.
Claim 3
Dependent Claim
16 words
The storage tank system of claim 1 wherein the jacket is made of a flexible material.
Claim 4
Dependent Claim
17 words
The storage tank system of claim 2 wherein the jacket is made of a synthetic polymeric material.
Claim 5
Dependent Claim
18 words
The storage tank system of claim 3 wherein the jacket is made of a fibrous reinforced resinous material.
Claim 6
Dependent Claim
18 words
The storage tank systems of claim 4 wherein the jacket is made of a fiberglass reinforced polyester material.
Claim 7
Dependent Claim
12 words
The storage tank system of claim 1 wherein the jacket is rigid.
Claim 8
Dependent Claim
14 words
The storage tank system of claim 6 wherein the jacket is made of steel.
Claim 9
Dependent Claim
18 words
The storage tank system of claim 6 wherein the jacket is made of a fiberglass reinforced resinous material.
Claim 10
Dependent Claim
25 words
The storage tank system of claim 1 wherein the sleeve extends from about 12 inches to about forty-eight inches above the top of the manhead.
Claim 11
Dependent Claim
15 words
The storage tank system of claim 9 wherein the dispensing line extends through the manhead.
Claim 12
Dependent Claim
18 words
The storage tank system of claim 1 wherein the jacket completely encases the storage tank and the sleeve.
Claim 13
Dependent Claim
70 words
The storage tank system of claim 1 further comprising a second manhead positioned on the cover of the sleeve, said second manhead comprised of a side portion extending from the cover of the sleeve toward the ground surface above the storage tanks and having a maximum cross-section dimension ranging from about eight inches to about forty-eight inches and a cover allowing for ready access to the interior of the sleeve.
Claim 14
Dependent Claim
19 words
The storage tank system of claim 12 further wherein the cover on the second manhead forms a water-tight seal.
Claim 15
Dependent Claim
21 words
The storage tank system of claim 25 further comprising a detection means in communication with the space encompassed by the sleeve.
Claim 16
Dependent Claim
53 words
The storage tank system of claim 14 further comprising a jacket around the dispensing line at the point where the dispensing line exits the sleeve and extending to a dispenser such that any leakage from the dispensing line will be contained within the jacket and directed towards the area encompassed by the sleeve.
Claim 17
Dependent Claim
12 words
The storage tank system of claim 15 wherein the jacket is flexible.
Claim 18
Dependent Claim
57 words
The storage tank system of claim 15 wherein the leak detection means monitors for leakage into the closed space between the storage tank and its jacket and for leaking into a closed space between the dispensing line and a jacket positioned around the dispensing line at the point it extis the sleeve and extending to a dispenser.
Claim 19
Dependent Claim
39 words
The storage tank system of claim 1 wherein a detecting liquid is found in the closed space between the storage tank and jacket and the leak detection means is capable of detecting any change in level of detecting liquid.
Claim 20
Dependent Claim
25 words
The storage tank system of claim 1 wherein a gas permeable material is used to maintain a spaced relationship between the storage tank and jacket.
Claim 21
Dependent Claim
29 words
The storage tank systems of claim 1 wherein a non-atmospheric pressure is maintained in the closed space and a pressure change detector is used as the leak detection means.
Claim 22
Dependent Claim
21 words
The storage tank system of claim 1 further wherein a fill line extends through the manhead and into the storage tank.
Claim 23
Dependent Claim
21 words
The storage tank system of claim 21 further wherein a vent line extends throughout the manhead and into the storage tank.
Claim 24
Dependent Claim
25 words
The storage tank of claim 1 further wherein a fill line and a vent line extend through the sleeve and into the rigid storage tank.
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) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |