121 |
Method and apparatus for molding concrete into a bridge or other structure |
US10050354 |
2002-01-16 |
US06808156B2 |
2004-10-26 |
Lesley O. Bond |
A method and mold assembly for forming concrete or another moldable composition. A plurality of elongate elements, such as PVC pipes, are stacked in rows in gravity-stable arrangement to form a contour, such as an arch. The radius of the arch may be controlled by arranging the pipes as desired. Particulate matter, such as sand, may be used between the stacked pipes. Also, an anchor assembly can be used to secure one or more of the pipes to the earth. After the pipes are stacked and a bed of sand has been placed thereon, a waterproof cover is laid over the top of the stack, and layer of concrete is spread. After the concrete is set, the pipes, the cover and the anchor assemblies are removed. The removal will be expedited by washing the sand from the stack. Once removed, the pipes and anchors can be reused indefinitely. |
122 |
METHOD AND APPARATUS FOR MOLDING CONCRETE INTO A BRIDGE OR OTHER STRUCTURE |
US10050354 |
2002-01-16 |
US20040075041A1 |
2004-04-22 |
Lesley
O.
Bond |
A method and mold assembly for forming concrete or another moldable composition. A plurality of elongate elements, such as PVC pipes, are stacked in rows in gravity-stable arrangement to form a contour, such as an arch. The radius of the arch may be controlled by arranging the pipes as desired. Particulate matter, such as sand, may be used between the stacked pipes. Also, an anchor assembly can be used to secure one or more of the pipes to the earth. After the pipes are stacked and a bed of sand has been placed thereon, a waterproof cover is laid over the top of the stack, and layer of concrete is spread. After the concrete is set, the pipes, the cover and the anchor assemblies are removed. The removal will be expedited by washing the sand from the stack. Once removed, the pipes and anchors can be reused indefinitely. |
123 |
Method and apparatus for constructing prestressed structures utilizing a
membrane and floating dome assembly |
US279635 |
1994-07-22 |
US5675941A |
1997-10-14 |
Maximiliaan J. Dykmans |
The present invention is directed to improved tank or containment vessels and processes and apparatus for their construction. The tanks or containment vessels usually consist of circular walls resting on a base and a dome supported by the walls. The dome of the subject prestressed tank is formed by deploying or creating a membrane on the base, applying one or more layers of rigidifying material (and prestressing or reinforcing material if needed) on the membrane and then forming said membrane into a dome before the rigidifying material sets by the selective introduction of compressed air at appropriate locations between the base and the membrane. The hardening of the rigidifying material results in a composite preformed rigid roof or dome having a membrane liner and an overlay of composite construction. Once the walls are created, air pressure can be further utilized to raise this preformed composite dome upward to a predetermined height after which it is fastened to the walls. An appropriate air seal may be used to prevent excessive leakage of air between the walls and the dome and to assist in the raising of the dome. Utilizing this air cushion procedure to raise the dome to its proper location, eliminates the need of scaffolding and other costly support structures. Integral seismic anchors may be also used to complete the construction process to protect the structure against earthquakes and other tremors by anchoring the dome to the tank walls and the tank walls to the base in a manner whereby the seismic forces are translated parallel to the wall instead of radially to the wall. |
124 |
Apparatus for constructing circumerentially wrapped prestressed
structures utilizing a membrane and having seismic coupling |
US753652 |
1991-09-30 |
US5177919A |
1993-01-12 |
Max J. Dykmans |
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. |
125 |
Multi-purpose dome structure and the construction thereof |
US477715 |
1990-02-09 |
US5094044A |
1992-03-10 |
Maximilliaan J. Dykmans |
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. A second outer membrane can also be used for weather protection. |
126 |
Flexible elastic support |
US51238 |
1979-06-22 |
US4354709A |
1982-10-19 |
Wilhelm Schuster |
An adjustable-curvature structure, e.g. for seat backs, comprises a pair of support belts which are flexible but substantially inextensible, and a pair of tension belts juxtaposed with the support belts. A grid of transverse bars can span the support belts and a tension device is provided between the two pairs of belts so that the support belts can be bowed when the other belts are placed under tension. The curvature character is controlled by spacers which interconnect the support and tension belts to limit the distance between them at various locations along their lengths. |
127 |
Variable height transport carriage |
US30454872 |
1972-11-07 |
US3904216A |
1975-09-09 |
METRAILER CHARLES E |
Apparatus and method for modular concrete constructions. The apparatus comprises a carriage and a concrete form. It also comprises the combination of a concrete form detachably mounted on a portable carriage the former of which can be set in place and positioned for pouring. The carriage can then be detached from the concrete form, removed for further service and later reunited with the form for transport to a new pour position, as desired. The concrete form per se is comprised generally of a support structure atop which is provided a pour form. The pour form is constituted of a central span and, preferably, a pair of upwardly faced troughs located on opposite sides of the central span. The central span of the pour form can range from flat to highly contoured. The troughs are each provided with a plurality of bottom openings, these being formed between removable panels. In forming a module, wet concrete can be poured upon the central span of the pour form to form a roof, ceiling, or floor while a tubular member or column form can be fitted into the openings of the troughs at the column locations and wet concrete can be poured therein and into the troughs to cast columns and beams for support of the roof, ceiling or floor. After the concrete has set the pour form can be lowered, the troughs freed by removal of the panels at the columns, and the beam forms moved inwardly. The carriage can then be removed to an adjacent location for further pouring.
|
128 |
Forming system for concrete floor and roof decks |
US21435471 |
1971-12-30 |
US3807681A |
1974-04-30 |
KANE A; BECHER G |
A forming system for concrete floor and roof decks is provided having all parts standardized, separable and reuseable, including shoring, displacement domes or flat panels and half cradle and side panels, all constructed and related to enable quick virtually tool-free erection as well as removal for reuse. The displacement domes or flat panel forms are readily removable before the shoring if desired to reduce the between-use intervals. Convenient latch lock connections are provided for rapid erection and dismantling of components.
|
129 |
Apparatus for modular concrete constructions |
US3744945D |
1971-11-30 |
US3744945A |
1973-07-10 |
METRAILER C |
Apparatus for modular concrete constructions. The apparatus comprises a carriage and a concrete form. It also comprises the combination of a concrete form detachably mounted on a portable carriage the former of which can be set in place and positioned for pouring. The carriage can then be detached from the concrete form, removed for further service and later reunited with the form for transport to a new pour position, as desired. The concrete form per se is comprised generally of a support structure atop which is provided a pour form. The pour form is constituted of a central span and, preferably, a pair of upwardly faced troughs located on opposite sides of the central span. The central span of the pour form can range from flat to highly contoured. The troughs are each provided with a plurality of bottom openings, these being formed between removable panels. In forming a module, wet concrete can be poured upon the central span of the pour form to form a roof, ceiling, or floor while a tubular member or column form can be fitted into the openings of the troughs at the column locations and wet concrete can be poured therein and into the troughs to cast columns and beams for support of the roof, ceiling or floor. After the concrete has set the pour form can be lowered, the troughs freed by removal of the panels at the columns, and the beam forms moved inwardly. The carriage can then be removed to an adjacent location for further pouring.
|
130 |
Assemblable formwork for reinforced concrete structures |
US38117764 |
1964-07-08 |
US3288427A |
1966-11-29 |
PAUL PLUCKEBAUM |
|
131 |
Adjustable arch form |
US51611655 |
1955-06-17 |
US2842234A |
1958-07-08 |
HEIDEMAN HOMER G |
|
132 |
Method of concrete floor construction |
US53272544 |
1944-04-26 |
US2377944A |
1945-06-12 |
KOHLHAAS JOHN V |
|
133 |
Floor form |
US40046520 |
1920-07-31 |
US1428953A |
1922-09-12 |
GARLINGHOUSE LESLIE H |
|
134 |
Centering means and method of forming monolithic arches |
US14999317 |
1917-02-21 |
US1350772A |
1920-08-24 |
BELT WILLIAM M; SMITH HERSCHEL C |
|
135 |
Adjustable concrete-culvert form. |
US1914841067 |
1914-05-26 |
US1219434A |
1917-03-20 |
BURKHOLDER ROSS |
|
136 |
Collapsible core for concrete culverts. |
US3209215 |
1915-06-04 |
US1171316A |
1916-02-08 |
CAMBLIN ARTHUR E |
|
137 |
False work. |
US1912699534 |
1912-05-24 |
US1106880A |
1914-08-11 |
LUTEN DANIEL B |
|
138 |
Metal arch. |
US1911631362 |
1911-06-05 |
US1074001A |
1913-09-23 |
MAYER PETER J |
|
139 |
Collapsible form for arches and sewers. |
US1907350454 |
1907-01-02 |
US859478A |
1907-07-09 |
BEIGHLE WILLIAM J |
|
140 |
Device for constructing tunnels |
US301927D |
|
US301927A |
1884-07-15 |
|
|