Max Rudolf Dykmans
Engineers in El Cajon, CA

5408793, Apr 25, 1995

Jan 29, 1993

8/012986

Max J. Dykmans - El Cajon CA

E04B 132

52 816

An improved dome structure on a base is disclosed comprising, in the preferred embodiment, of a membrane sandwiched between layers of rigidifying material such as shotcrete or reinforced composite which also serve to embed radial wires and circumferential tensioned prestressing. Various types of circumferential tensioned prestressing can be applied to minimize bursting stresses and can consist of steel wire as well as fiber or steel-reinforced tape. Further layers of rigidifying material can then be applied over the circumferential prestressing as a final protection and cover. The radial wires can contain spacers or hooks to preclude the circumferential prestressing from riding up on the structure. The lower portion of the dome can include a reverse curvature to minimize stresses and stabilize the structure. The rigidifying material may be composite which can be hardened by light curing.

4776145, Oct 11, 1988

Dec 9, 1983

6/559911

Max J. Dykmans - El Cajon CA

E04B 132

52741

An improved dome structure on a base is disclosed comprising of a membrane sandwiched between layers of rigidifying material such as shotcrete which also serve to embed the circumferential and radial prestressing members. Circumferential prestressing can be applied to minimize bursting stresses. Further layers of rigidifying material can then be applied over the circumferential prestressing as a final protection and cover. The radial prestressing materials can contain spacers or hooks to preclude the circumferential prestressing material from riding up on the structure. The lower portion of the dome can include a reverse curvature to minimize stresses and stabilize the structure.

5177919, Jan 12, 1993

Sep 30, 1991

7/753652

Max J. Dykmans - El Cajon CA

E02D 574

52298

The present invention is directed to improved tank structures and apparatus for their construction. The walls of the prestressed tank are formed by inflating a membrane, applying one or more layers of rigidifying material outwardly of said membrane and then prestressing the walls by circumferentially wrapping prestressing material to minimize the tension in the rigidifying material when subject to loading. In another embodiment, wall forms are placed inwardly of said membrane to aid in the forming of the walls and circumferential prestressing. In the best mode of the invention, the walls are of reinforced plastic, fiber-reinforced plastic or resin sandwich composite construction this application focuses on. Seismic countermeasures which may also be used to protect the structure against earthquakes and other tremors, by the anchoring of the tank walls to the base and permitting the seismic forces to be shared by the seismic anchors. When a seismic disturbance occurs, the force acting on the structure can be transmitted and distributed to the footing and around the circumference of the tank.

5092522, Mar 3, 1992

Dec 1, 1989

7/444834

Max J. Dykmans - El Cajon CA

B05B 704

239 61

Processes and apparatus for the construction of improved tank structures employing a pump metering and delivery system which accurately meters, mixes and evenly applies composite materials to form the walls of tanks or containment vessels. Such systems have specific application to the construction of walls of prestressed tanks formed by inflating a membrane and applying rigidifying material outwardly of said membrane and then prestressing the walls by circumferentially wrapping prestressing material around the same. Promoters, catalyst, and other chemicals are used to create composite walls, each feeding into individual pump systems comprised of at least two hydraulic cylinders connected to supply cylinders which are coordinated so that their strokes are controlled to arrive at a desired flow. The flow is then channeled through a mixer which mixes the material for spraying through a nozzle. The flow from the nozzle can also be intermixed with chopped glass from a chopper system or with granular materials.

4884747, Dec 5, 1989

May 14, 1987

7/050317

Max J. Dykmans - El Cajon CA

B05B 704, B05B 300, F04B 3500

239 61

An apparatus for the construction of improved tank structures employing a pump metering and delivery system which accurately meters, mixes and evenly sprays composite materials to form the walls of tanks or containment vessels. Such systems have specific application to the construction of walls of prestressed tanks formed by inflating a membrane and applying rigidifying material outwardly of the membrane and then prestressing the walls by circumferentially wrapping prestressing material around the same. Promoters, catalyst, and other chemicals are used to create composite walls, each feeding into individual pump systems comprised of at least two hydraulic cylinders connected to supply cylinders which are coordinated so that their strokes are controlled to arrive at a desired flow. The flow is then channeled through a mixer which mixes the material for spraying through a nozzle. The flow from the nozzle can also be intermixed with chopped glass from a chopper system or with granular materials.

5134830, Aug 4, 1992

Aug 21, 1989

7/396377

Max J. Dykmans - El Cajon CA

E04B 116

52741

The present invention is directed to improved tank structures and the processes and apparatus for their construction. The walls of the prestressed tank are formed by inflating a membrane, applying one or more layers of rigidifying material on said membrane and then prestressing the walls by circumferentially wrapping prestressing material to minimize the tension in the rigidifying material when subjected to loading. In another embodiment wall forms are placed inwardly of said membrane to aid in the forming and support of the walls under circumferential prestresing. In the best mode of the invention, the walls are of reinforced plastic, fiber, or shortcrete and resin sandwich composite construction. Seismic countermeasures designed to minimize vertical or radical bending stresses in the wall or dome shell may also be used to protect the structure against earthquakes and other tremors, by anchoring said wall or dome shell to their base in a manner whereby horizontal seismic forces are distributed circumferentially around the wall or dome shell.

4879859, Nov 14, 1989

Oct 3, 1986

6/915269

Max J. Dykmans - El Cajon CA

E04B 116

52741

The present invention is directed to improved tank structures and the processes and apparatus for their construction. The walls of the prestressed tank are formed by inflating a membrane, applying one or more layers of rigidifying material outwardly of said membrane and then prestressing the walls by circumferentially wrapping prestressing material to minimize the tension in the rigidifying material when subject to loading. In another embodiment, wall forms are placed inwardly of said membrane to aid in the forming of the walls and circumferential prestressing. In the best mode of the invention, the walls are of reinforced plastic, "FIBERGLASS fiber-reinforced plastic", or resin sandwich composite construction. Seismic countermeasures may also be used to protect the structure against earthquakes and other tremors, by the anchoring of the tank walls to the base and permitting the seismic forces to be shared by the seismic anchors. When a seismic disturbance occurs, the force acting on the structure can be transmitted and distributed to the footing and around the circumference of the tank.

5105590, Apr 21, 1992

Nov 14, 1989

7/436479

Max J. Dykmans - El Cajon CA

E04H 700

52741

The present invention is directed to improved tank structures and apparatus for their construction. The walls of the prestressed tank are formed by inflating a membrane, applying one or more layers of rigidifying material outwardly of said membrane and then prestressing the walls by circumferentially wrapping prestressing material to minimize the tension in the rigidifying material when subject to loading. In another embodiment, wall forms are placed inwardly of said membrane to aid in the forming of the walls and circumferential prestressing. In the best mode of the invention, the walls are of reinforced plastic, fiber-reinforced plastic, or resin sandwich composite construction. This application focuses on seismic countermeasures which may also be used to protect the structure against earthquakes and other tremors, by the anchoring of the tank walls to the base and permitting the seismic forces to be shared by the seismic anchors. When a seismic disturbance occurs, the force acting on the structure can be transmitted and distributed to the footing and around the circumference of the tank.

5076495, Dec 31, 1991

Nov 13, 1989

7/434322

Max J. Dykmans - El Cajon CA

B05B 704

239 1

Process and apparatus for the construction of improved tank structures employing a pump metering and delivery system which accurately meters, mixes and evenly sprays composite materials to form the walls of tanks or containment vessels. Such systems have specific application to the construction of walls of prestressed tanks formed by inflating a membrane and applying rigidifying material outwardly of said membrane and then prestressing the walls by circumferentially wrapping prestressing material around the same. Promoters, catalyst, and other chemicals are used to create composite walls, each feeding into individual pump systems comprised of at least two hydraulic cylinders connected to supply cylinders which are coordinated so that their strokes are controlled to arrive at a desired flow. The flow is then channeled through a mixer which mixes the material for spraying through a nozzle. The flow from the nozzle can also be intermixed with chopped glass from a chopper system or with granular materials.