US5072609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tank systems having in situ formed inner tank
Assignee: Individual
•
Filing: 1990-05-02
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Granted: 1991-12-17
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Expires: 2010-05-02
Abstract
Abstract A storage tank system having primary and secondary containment capability is made from a rigid outer tank shell by forming in situ an inner tank of fibrous reinforcing material and resinous material. A separating material is initially positioned on the interior surface of the rigid outer tank. The closed space between the rigid outer tank shell and formed inner tank is monitored for leakage.
Inventors
- 👤 Bruce R. Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:12
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/48; B65D90/50; B65D90/505; B65D90/507
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A storage tank system for liquids having secondary containment capability, comprising: (a) a rigid outer tank shell; (b) a separating material having a thickness ranging from about 0.025 inches to about 2.0 inches covering the interior surface of the rigid outer tank shell; and (c) an in situ formed inner tank made of a fibrous reinforced resinous material which is encased by the rigid outer tank shell with a closed space therebetween occupied by the separating material, further said inner tank characterized in not being rigidly connected to the rigid outer tank shell because of the separating material.
Claim 2
Dependent Claim
98 words
A storage tank system for liquids having secondary containment capability, comprising: (a) a rigid outer tank shell; (b) a separating material having a thickness ranging from about 0.025 inches to about 2.0 inches covering the interior surface of the rigid outer tank shell; and (c) an in situ formed inner tank made of a fibrous reinforced resinous material which is encased by the rigid outer tank shell with a closed space therebetween occupied by the separating material, further said inner tank characterized in not being rigidly connected to the rigid outer tank shell because of the separating material.
Claim 3
Dependent Claim
18 words
The storage tank system of claim 1 wherein the rigid outer tank shell is made of a metal.
Claim 4
Dependent Claim
27 words
The storage tank system of claim 1 wherein the rigid outer tank shell is made of a fibrous reinforced resinous material having support ribs circumferentially extending therearound.
Claim 5
Dependent Claim
16 words
The storage tank system of claim 3 wherein fiberglass is used to reinforce the resinous material.
Claim 6
Dependent Claim
16 words
The storage tank system of claim 1 wherein the separating material is a gas pervious material.
Claim 7
Dependent Claim
21 words
The storage tank system of claim 5 wherein the gas pervious material is a foam, matting, net, screen or mesh material.
Claim 8
Dependent Claim
33 words
The storage tank system of claim 6 wherein the gas pervious material is selected from the group consisting of jute, synthetic resinous foam, fiberglass matting, cotton matting, nylon matting, corrugated cardboard and asbestos.
Claim 9
Dependent Claim
20 words
The storage tank system of claim 5 wherein resinous protrusions extend from the inner tank into the gas pervious material.
Claim 10
Dependent Claim
24 words
The storage tank system of claim 5 wherein the gas pervious material is at least partially sealed on the surface adjoining the inner tank.
Claim 11
Dependent Claim
23 words
The storage tank system of claim 5 wherein the gas pervious material ranges in thickness from about 0.125 inches to about 0.5 inches.
Claim 12
Dependent Claim
27 words
The storage tank system of claim 5 further comprising a monitor means in communication with the closed space so as to provide a fail-safe leak detection system.
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) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |