Thomas E Lindquist

US Patent:

52341917, Aug 10, 1993

Filed:

Apr 26, 1991

Appl. No.:

7/692099

Inventors:

Ralph Bambacigno - Modesto CA
Thomas R. Lindquist - Denair CA

Assignee:

Convault, Inc. - Denair CA

International Classification:

B29C 3910
B29C 3922

US Classification:

249 93

Abstract:

A vault for dual containment of the fluids by an inner tank and an outer tank is produced by the apparatus described. The tendency of the inner tank to bob up in response to buoyancy from fluid concrete is countered by a hold-down assembly. The hold-down assembly produces downward pressure on the tank which is distributed over a region of the upper surface of the tank by a pressure distribution device which is left embedded in the concrete. An adjustment device is coupled to the form to permit pushing or pulling on the tank manway to move the manway down or up to provide the proper location.

US Patent:

49864360, Jan 22, 1991

Filed:

Oct 20, 1989

Appl. No.:

7/424277

Inventors:

Ralph Bambacigno - Modesto CA
Thomas R. Lindquist - Denair CA

Assignee:

Convault Inc. - Denair CA

International Classification:

B65B 306

US Classification:

220 86R

Abstract:

An above-ground liquid storage system (2) includes a steel inner container (4) encased within a layer (6) of reinforced concrete. The steel container has an upper opening (12) in an upper wall (10) thereof. An overfill reservoir (14) is positioned within the container below the upper opening so that the contents of the overfill reservoir are protected by virtue of being within, rather than outside of, the container. A fill pipe (18) extends through the overfill reservoir to permit user to introduce a liquid, such as gasoline or fuel, into the container. The fill pipe has an upper end (26) positioned above the upper opening and a lower end (22) positioned below the upper opening. An upper barrier (40), including a cylindrical wall (30) covered by a removable cover (34) to define an operating region (43) above the upper opening, is used to seal the upper opening. The overfill reservoir has a normally sealed drain (44); overfill liquid within the overfill reservoir is drained into the interior (16) of the container by the user opening a normally closed drain valve (46).

US Patent:

53727720, Dec 13, 1994

Filed:

Dec 20, 1993

Appl. No.:

8/171241

Inventors:

Ralph Bambacigno - Modesto CA
Thomas R. Lindquist - Denair CA

Assignee:

Convault, Inc. - Denair CA

International Classification:

B28B 114

US Classification:

264278

Abstract:

A storage vault (2, 182) includes an inner tank (4,4',152,180) entombed within a concrete outer tank (8) by first erecting a pair of sidewall forms (51) on a base plate (44) to create an open-top enclosure (54). The inner tank (180) can include a plastic tank (152) enclosed within an external framework (154), the combination (150) housed within a steel tank (174). A layer of concrete (56) is poured onto the base plate, the inner tank is lowered onto the layer of concrete, and concrete is poured into the enclosure to entomb the inner tank while the bottom layer of concrete is still wet. Reinforced hold-down bars (86) extend over the top of the enclosure and have downwardly extending hold-down tubes (92) which engage the top of the inner tank and keep the inner tank positioned horizontally and vertically. The hold-down bars are fastened to the base plate to keep the inner tank properly positioned. After the concrete has set sufficiently, the hold-down bars and tubes are removed and the holes created by the hold-down tubes are filled with concrete.

US Patent:

51740796, Dec 29, 1992

Filed:

Aug 23, 1991

Appl. No.:

7/738714

Inventors:

Ralph Bambacigno - Modesto CA
Thomas R. Lindquist - Denair CA

Assignee:

Convault, Inc. - Denair CA

International Classification:

E04B 132

US Classification:

52249

Abstract:

A storage vault (2, 182) includes an inner tank (4,4',152,180) emtombed within a concrete outer tank (8) by first erecting a pair of sidewall forms (51) on a base plate (44) to create an open-top enclosure (54). The inner tank (180) can include a plastic tank (152) enclosed within an external framework (154), the combination (150) housed within a steel tank (174). A layer of concrete (56) is poured onto the base plate, the inner tank is lowered onto the layer of concrete, and concrete is poured into the enclosure to entomb the inner tank while the bottom layer of concrete is stil wet. Reinforced hold-down bars (86) extend over the top of the enclosure and have downwardly extending hold-down tubes (92) which engage the top of the inner tank and keep the inner tank positioned horizontally and vertically. The hold-down bars are fastened to the base plate to keep the inner tank properly positioned. After the concrete has set sufficiently, the hold-down bars and tubes are removed and the holes created by the hold-down tubes are filled with concrete.

US Patent:

50641557, Nov 12, 1991

Filed:

Feb 28, 1990

Appl. No.:

7/486326

Inventors:

Ralph Bambacigno - Modesto CA
Thomas R. Lindquist - Denair CA

Assignee:

Convault, Inc. - Denair CA

International Classification:

A47G 2302

US Classification:

248146

Abstract:

A tank stabilizer (6, 50) for an above ground liquid storage tank (8) of the type having one or more bottom supports or skids (10) to support the tank a distance above a support surface (16). The tank stabilizer includes lateral supports (20,56), preferably trough-like or U-shaped structures, which are secured to the support surface and configured so the bottom supports fits snugly therein. The tank stabilizer restricts horizontal movement of the tank relative to the support surface during an earthquake. The tank stabilizer may include an upwardly extending liquid barrier (34) circumscribing the lateral supports to help contain any spills or leaks.