Patent US3339696A successfully refreshed from Google Patents.
Patent US2567351A successfully refreshed from Google Patents.
Patent US4925046A successfully refreshed from Google Patents.
US4925046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double walled ribbed storage tank systems
Assignee: Xerxes Corp
•
Filing: 1989-02-10
•
Granted: 1990-05-15
•
Expires: 2009-02-10
Abstract
Abstract A method of making a storage tank system comprises forming an inner containment wall comprised of a series of wall sections onto the interior walls of a cylindrical-shaped ribbed storage tank. Each wall section is bonded to the tank's side walls at a distance of less than about four inches in height from the tank wall. Primary containment is provided by a tank formed of the wall sections and inner end caps. A monitored storage tank system with secondary containment is provided by the use of a leak detection means to monitor the space defined by the inner containment wall and the storage tank.
Inventors
- 👤 Bruce R. Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:08
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/48; B65D90/50; B65D90/501; B65D90/503; Y; Y10; Y10S; Y10S220/00; Y10S220/23
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
192 words
A method of building a double walled ribbed storage tank system from a cylindrical-shaped tank formed of a fibrous reinforced resinous material, said cylindrical-shaped tank made in a fashion wherein a set of spaced exterior protruding ribs extend circumferentially around the tank and wherein each of the rib's interiors is open to the tank's interior, further said tank's interior wall being generally contoured with rib recesses, comprising the steps of: (a) attaching to interior walls of the cylindrical-shaped tank a series of anchor wall sections spaced laterally and circumferentially around the tank's interior wall and separated at least in a mid portion from the interior wall; (b) attaching a series of bridging wall sections to the anchor wall sections so that each bridging wall section is attached at each edge to an anchor wall section so as to form a continuous wall along the tank's interior; and (c) attaching an inner end cap to a wall section at each end of the tank in a manner such that the anchor wall sections, bridging wall sections and inner end caps are bonded together to collectively form a container capable of holding a liquid.
Claim 2
Independent Claim
192 words
A method of building a double walled ribbed storage tank system from a cylindrical-shaped tank formed of a fibrous reinforced resinous material, said cylindrical-shaped tank made in a fashion wherein a set of spaced exterior protruding ribs extend circumferentially around the tank and wherein each of the rib's interiors is open to the tank's interior, further said tank's interior wall being generally contoured with rib recesses, comprising the steps of: (a) attaching to interior walls of the cylindrical-shaped tank a series of anchor wall sections spaced laterally and circumferentially around the tank's interior wall and separated at least in a mid portion from the interior wall; (b) attaching a series of bridging wall sections to the anchor wall sections so that each bridging wall section is attached at each edge to an anchor wall section so as to form a continuous wall along the tank's interior; and (c) attaching an inner end cap to a wall section at each end of the tank in a manner such that the anchor wall sections, bridging wall sections and inner end caps are bonded together to collectively form a container capable of holding a liquid.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein each anchor wall section covers an area of the tank wall between adjacent ribs and the bridging wall sections cover the rib recesses.
Claim 4
Dependent Claim
32 words
The method of claim 2 wherein each anchor wall section is attached at its edges to side walls of the recessed rib so as to strengthen said rib against external load forces.
Claim 5
Dependent Claim
34 words
The method of claim 1 wherein each edge of each anchor wall section is attached to adjacent areas of the tank wall separated by the recessed rib so as to cover said recessed rib.
Claim 6
Dependent Claim
53 words
The method of claim 1 wherein each anchor wall section is attached at each of its edges to a wall area between two recessed ribs so as to substantially cover said wall area and the bridging wall sections are attached to adjacent anchor wall sections so as to cover a recessed rib area.
Claim 7
Dependent Claim
30 words
The method of claim 1 wherein the anchor wall sections are formed at a distance less than about four inches in height from the interior wall of the cylindrical-shaped tank.
Claim 8
Dependent Claim
28 words
The method of claim 6 wherein each anchor wall section is formed substantially in contact with the tank wall, yet not sealed thereto in a liquid tight fashion.
Claim 9
Dependent Claim
21 words
The method of claim 1 wherein each anchor wall section is from about eight inches to about thirty inches in width.
Claim 10
Dependent Claim
20 words
The method of claim 8 wherein each anchor wall section is from about twelve inches to about twenty inches wide.
Claim 11
Dependent Claim
22 words
The method of claim 1 wherein the anchor wall sections and bridging wall sections are formed of a fibrous reinforced resinous material.
Claim 12
Dependent Claim
52 words
The method of claim 10 further comprising the step of placing a separating material on the interior side of the tank walls at least where the anchor wall sections are to be formed, thereby providing a means whereby the mid sections of the anchor wall sections remain structurally independent of the tank.
Claim 13
Dependent Claim
29 words
The method of claim 11 wherein the separating material is sealed on at least one side to prevent substantial migration of resinous material therethrough to reach the tank wall.
Claim 14
Dependent Claim
27 words
The method of claim 12 wherein the separating material is a foam, matting, net, screen or mesh and a surface nearest the anchor wall section is sealed.
Claim 15
Dependent Claim
39 words
The method of claim 1 wherein areas under the anchor wall sections and bridging wall sections are provided with access openings for communication to allow monitoring of the space between the formed wall sections and tank to detect leakage.
Claim 16
Dependent Claim
15 words
The method of claim 1 wherein the wall sections are formed from solid sheet materials.
Claim 17
Dependent Claim
132 words
A double walled ribbed storage tank system, comprising (a) a fibrous reinforced resinous outer tank having a set of exterior protruding ribs extending circumferentially around the tank wherein the interior of each of the ribs is hollow; and (b) an inner tank comprised of a series of anchor wall sections spaced laterally and circumferentially around the outer tank's interior wall and separated at least in a mid portion from the outer tank's wall, bridging wall sections attached at each edge to an anchor wall section, and inner end caps at each end, further wherein the anchor wall sections, bridging wall sections and inner end caps are bonded together to form an inner tank, said inner tank capable of storing liquid and said outer tank being a secondary containment means for leaked liquid.
Claim 18
Dependent Claim
132 words
A double walled ribbed storage tank system, comprising (a) a fibrous reinforced resinous outer tank having a set of exterior protruding ribs extending circumferentially around the tank wherein the interior of each of the ribs is hollow; and (b) an inner tank comprised of a series of anchor wall sections spaced laterally and circumferentially around the outer tank's interior wall and separated at least in a mid portion from the outer tank's wall, bridging wall sections attached at each edge to an anchor wall section, and inner end caps at each end, further wherein the anchor wall sections, bridging wall sections and inner end caps are bonded together to form an inner tank, said inner tank capable of storing liquid and said outer tank being a secondary containment means for leaked liquid.
Claim 19
Dependent Claim
33 words
The double walled ribbed storage tank system of claim 16 wherein each anchor wall section covers an area of the tank between adjacent ribs and the bridging wall sections cover the rib recesses.
Claim 20
Dependent Claim
37 words
The double walled ribbed storage tank system of claim 17 wherein each anchor wall section is attached at its edges to side walls of the recessed rib so as to strengthen said rib against external load forces.
Claim 21
Dependent Claim
38 words
The double walled ribbed storage tank of claim 16 wherein each edge of each anchor wall section is attached to adjacent areas of the tank wall separated by a recessed rib so as to cover said recessed rib.
Claim 22
Dependent Claim
58 words
The double walled ribbed storage tank system of claim 16 wherein each anchor wall section is attached at each of its edges to a wall area between two recessed ribs so as to substantially cover said wall area and the bridging wall sections are attached to adjacent anchor wall sections so as to cover a recessed rib area.
Claim 23
Dependent Claim
35 words
The double walled ribbed storage tank system of claim 16 wherein the anchor wall sections are formed at a distance less than about four inches in height from the interior wall of the outer tank.
Claim 24
Dependent Claim
33 words
The double walled ribbed storage tank system of claim 21 wherein each anchor wall section is formed substantially in contact with the tank wall, yet not sealed thereto in a liquid tight fashion.
Claim 25
Dependent Claim
26 words
The double walled ribbed storage tank system of claim 16 wherein each anchor wall section is from about eight inches to about thirty inches in width.
Claim 26
Dependent Claim
25 words
The double walled ribbed storage tank system of claim 23 wherein each anchor wall section is from about twelve inches to about twenty inches wide.
Claim 27
Dependent Claim
27 words
The double walled ribbed storage tank system of claim 16 wherein the anchor wall sections and bridging wall sections are formed of a fibrous reinforced resinous material.
Claim 28
Dependent Claim
49 words
The double walled ribbed storage tank system of claim 25 further comprising a separating material on the interior side of the tank walls under at least the anchor wall sections to provide a means whereby the mid sections of the anchor wall sections remain structurally independent of the tank.
Claim 29
Dependent Claim
21 words
The double walled ribbed storage tank system of claim 26 wherein the separating material is sealed on at least one side.
Claim 30
Dependent Claim
32 words
The double walled ribbed storage tank system of claim 27 wherein the separating material is a foam, matting, net, screen or mesh and a surface nearest the anchor wall section is sealed.
Claim 31
Dependent Claim
44 words
The double walled ribbed storage tank system of claim 16 wherein areas under the anchor wall sections and bridging wall sections are provided with access openings for communication to allow monitoring of the space between the outer tank and inner tank to detect leakage.
References Cited (Backward Citations)
US3335903A
Cited
US3335904A
Cited
US3700512A
Cited
US3848765A
Cited
US4359167A
Cited
US4561292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |