ES2264313A1 - Formwork for prismatic columns, has tubular core with prismatic housing and cylindrical outer surface, covered by outer sheath at its periphery - Google Patents
Formwork for prismatic columns, has tubular core with prismatic housing and cylindrical outer surface, covered by outer sheath at its peripheryInfo
- Publication number
- ES2264313A1 ES2264313A1 ES200400436A ES200400436A ES2264313A1 ES 2264313 A1 ES2264313 A1 ES 2264313A1 ES 200400436 A ES200400436 A ES 200400436A ES 200400436 A ES200400436 A ES 200400436A ES 2264313 A1 ES2264313 A1 ES 2264313A1
- Authority
- ES
- Spain
- Prior art keywords
- formwork
- tubular core
- prismatic
- cylindrical
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 239000004794 expanded polystyrene Substances 0.000 claims description 2
- 238000002513 implantation Methods 0.000 claims description 2
- 239000003562 lightweight material Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 7
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000000207 volumetry Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Buffer Packaging (AREA)
Abstract
Description
Encofrado para columnas prismáticas.Formwork for prismatic columns.
La presente invención se refiere a un encofrado de los utilizados en la construcción "in situ" de columnas prismáticas, ya sean de sección cuadrangular, de sección básicamente cuadrangular y vértices truncados, o con cualquier otra sección poligonal, encofrados esencialmente no recuperables, es decir, mono-uso, que son eliminados en el momento del desencofrado de las columnas, al menos mayoritariamente.The present invention relates to a formwork used in the construction " in situ " of prismatic columns, whether of quadrangular section, basically quadrangular section and truncated vertices, or with any other polygonal section, essentially non-recoverable formwork, that is , mono-use, which are eliminated at the time of decoupling of the columns, at least mostly.
El objeto de la invención es conseguir un encofrado de naturaleza plegable, que reduzca de forma muy considerable su ocupación volumétrica tanto en situación de almacenaje como en situación de transporte, y que por su propia concepción permita la utilización directa por parte del constructor, tal como viene de fábrica, sin necesidad de ninguna manipulación intermedia.The object of the invention is to achieve a foldable nature formwork, which greatly reduces considerable its volumetric occupation both in a situation of storage as in transport situation, and that by its own conception allows direct use by the builder, as it comes from the factory, without the need for any manipulation intermediate.
En el encofrado de columnas prismáticas y con independencia de otras soluciones que no vienen al caso, una de ellas consiste en disponer, en el seno de una envolvente tubular, cilíndrica, de suficiente rigidez, un núcleo también tubular, exteriormente cilíndrico en correspondencia con la citada envolvente e interiormente prismático en correspondencia con la columna a obtener, y con su superficie interna dotada de un revestimiento a base de una lámina plástica o similar, en cualquier caso adecuada para evitar que la humedad de los materiales constitutivos de la columna pueda dañar a su vez la estructura del encofrado, mientras éste cumple su función.In the formwork of prismatic columns and with independence from other solutions that are not relevant, one of they consist of having, within a tubular envelope, cylindrical, of sufficient rigidity, also a tubular core, externally cylindrical in correspondence with the aforementioned enveloping and internally prismatic in correspondence with the column to be obtained, and with its internal surface provided with a coating based on a plastic sheet or similar, in any suitable case to prevent moisture from materials constitutive of the column may in turn damage the structure of the formwork, while it fulfills its function.
De forma más concreta la envolvente exterior se materializa generalmente en un complejo a base de cartón, plástico y aluminio, mientras que el núcleo tubular interior está obtenido a base de cuatro segmentos cilíndricos de poliestireno expandido de alta densidad, debidamente forrados, bien directamente unidos por sus aristas o bien con éstas sensiblemente distanciadas para conseguir chaflanes en correspondencia con las aristas de la columna.More specifically, the outer shell is usually materializes in a complex based on cardboard, plastic and aluminum, while the inner tubular core is obtained at base of four cylindrical segments of expanded polystyrene high density, properly lined, well directly joined by its edges or with these substantially distanced to get chamfers in correspondence with the edges of the column.
De la estructuración descrita se deduce que el encofrado sale de fábrica con una configuración cilíndrica de diámetro ligeramente mayor que la diagonal de la columna a obtener, es decir que la volumetría del encofrado es exactamente la misma cuando se encuentra en situación de almacenaje y transporte que cuando se encuentra en situación de uso.From the structuring described it follows that the formwork leaves the factory with a cylindrical configuration of diameter slightly larger than the diagonal of the column to be obtained, that is to say that the volumetry of the formwork is exactly the same when it is in storage and transport situation that when it is in use situation.
Tratando de obviar este problema de almacenaje y transporte, son conocidos encofrados del tipo anteriormente citado en los que tanto la envolvente exterior como el núcleo tubular están afectados por un corte en sentido de sus generatrices, que permite almacenar y transportar ambos elementos independizados entre sí y que por otro lado permite introducir unas envolventes dentro de otras, para minimizar su ocupación de espacio, y machihembrar en cierta medida también sus núcleos interiores, con la misma finalidad. Sin embargo esta solución presenta un problema de capital importancia y es que el encofrado así estructurado no puede ser directamente utilizado por el constructor, siendo necesaria una fase operativa intermedia, a realizar generalmente por una empresa colaboradora del fabricante, que cierra el núcleo tubular sobre sí mismo, por ejemplo mediante una tira adhesiva que se monta simultáneamente sobre la zona marginal de los bordes de la lámina plástica interior a dicho núcleo, a la vez que exteriormente se estabiliza con la colaboración de una segunda cinta adhesiva, generalmente arrollada de forma helicoidal.Trying to obviate this storage problem and transport, formwork of the aforementioned type are known in which both the outer shell and the tubular core are affected by a cut in the direction of their generatrices, which allows to store and transport both independent elements each other and that on the other hand allows you to introduce some envelopes within others, to minimize their occupation of space, and tongue and groove to some extent also its inner nuclei, with the same purpose. However, this solution presents a problem of capital importance and is that the formwork thus structured cannot be directly used by the builder, being necessary a intermediate operational phase, to be carried out generally by a company manufacturer's partner, which closes the tubular core on itself same, for example by an adhesive strip that is mounted simultaneously on the marginal area of the edges of the sheet plastic inside said core, while externally stabilizes with the collaboration of a second adhesive tape, generally coiled helically.
Esto supone un notable incremento de costos, una pérdida de tiempo que retrasa la entrega de los encofrados, y sobre todo una pérdida en la continuidad superficial interna del encofrado que va a repercutir posterior y negativamente en el aspecto estético de la columna a obtener.This means a significant increase in costs, a loss of time that delays formwork delivery, and about a whole loss in the internal surface continuity of the formwork that will impact later and negatively on the aesthetic appearance of the column to obtain.
El encofrado para columnas prismáticas que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, en los diferentes aspectos comentados.The formwork for prismatic columns that the proposed invention resolves in a fully satisfactory way the problematic previously exposed, in the different aspects commented.
Para ello y de forma más concreta dicho encofrado manteniendo una envolvente abierta al menos a través de una de sus generatrices, centra sus características en que su núcleo tubular interior es plegable, de manera que puede adoptar una configuración aplanada, con una drástica reducción en su volumen y consecuentemente en su ocupación de espacio, cuando se encuentra en situación inoperante, con las evidentes ventajas que esto conlleva, y es capaz de pasar de forma prácticamente instantánea a la configuración tubular y exteriormente cilíndrica que queda estabilizada merced a su alojamiento en la correspondiente envolvente, la cual y por su carácter abierto es susceptible de una drástica modificación en su diámetro efectivo, en orden a que una pluralidad de envolventes iguales puedan ser coaxialmente alojadas unas en el seno de otras, mediante mayor o menor deformación de las mismas, lo que también supone una drástica limitación en la ocupación de espacio por parte de dichas fundas o envolventes.To do this and more specifically said formwork keeping an envelope open at least through one of its generatrices, focuses its characteristics on that its Inner tubular core is foldable, so that it can adopt a flattened configuration, with a drastic reduction in its volume and consequently in its occupation of space, when is in an inoperative situation, with the obvious advantages that this entails, and is able to happen practically instant to tubular and externally cylindrical configuration that is stabilized thanks to your accommodation in the corresponding envelope, which and by its open nature is susceptible of a drastic modification in its effective diameter, in order that a plurality of equal envelopes can be coaxially housed in each other, through greater or less deformation of them, which also means drastic limitation on the occupation of space by said covers or envelopes
La envolvente podrá tener la misma naturaleza que las envolventes clásicas a que se ha hecho mención con anterioridad, de manera que se mantendrá perfectamente cerrada en situación de uso con la colaboración de cinchas o flejes exteriores de resistencia y disposición adecuada, si bien no existe limitación alguna para adoptar otras soluciones adecuadas al caso, como por ejemplo semicarcasas metálicas semicilíndricas capaces de cerrarse la una sobre la otra mediante enganches apropiados o por cualquier otro medio, sin más condicionante que el permitir una fácil adaptación del núcleo tubular en su interior, asegurar un cierre perfectamente estable y resistente, y que en situación de apertura resultar interacoplable con otras idénticas en orden a que su ocupación volumétrica sea mínima.The envelope may have the same nature that the classic envelopes mentioned above with before, so that it will remain perfectly closed in use situation with the collaboration of external straps or straps of resistance and adequate disposition, although there is no limitation some to adopt other appropriate solutions to the case, such as by example semi-cylindrical metal half shells capable of closing one on the other by appropriate hooks or by any other means, without more conditioning than allowing an easy adaptation of the tubular core inside, ensure a closure perfectly stable and resistant, and that in opening situation be inter-coupled with identical ones in order that their Volumetric occupancy is minimal.
Específicamente el recubrimiento interior del núcleo, a base de la clásica lámina plástica y aislante se materializa en un cuerpo tubular, de perímetro perfectamente continuo, que por su propia naturaleza permite la plegabilidad del núcleo anteriormente citada, y que asegura una perfecta continuidad superficial para el encofrado, y consecuentemente para la columna a obtener.Specifically the inner lining of the core, based on the classic plastic and insulating sheet materializes in a tubular body, perfectly perimeter continuous, which by its very nature allows the folding of the nucleus mentioned above, and that ensures perfect continuity surface for formwork, and consequently for column a obtain.
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:
La figura 1.- Muestra un detalle en sección transversal de un encofrado para columnas prismáticas realizado de acuerdo con el objeto de la presente invención, con un sector ampliado para mostrar con mayor claridad su estructura.Figure 1.- Shows a detail in section cross section of a formwork for prismatic columns made of according to the object of the present invention, with a sector expanded to show more clearly its structure.
La figura 2.- Muestra, según una vista en perspectiva, el núcleo tubular que participa en el encofrado de la figura anterior, debidamente plegado, en situación de almacenaje y/o transporte.Figure 2.- Shows, according to a view in perspective, the tubular nucleus that participates in the formwork of the previous figure, duly folded, in storage situation and / or transportation.
La figura 3.- Muestra, según una perspectiva similar a la figura 2, una pluralidad de envolventes debidamente interacopladas, también en condiciones de almacenaje y transporte.Figure 3.- Shows, according to a perspective similar to figure 2, a plurality of envelopes properly intercouplers, also in storage conditions and transport.
La figura 4.- Muestra, finalmente, una vista general en perspectiva del encofrado en situación de uso.Figure 4.- Shows, finally, a view general perspective of the formwork in use situation.
A la vista de las figuras reseñadas puede observarse como el encofrado para columnas prismáticas que la invención propone está constituido, como un encofrado convencional de este tipo, a partir de un núcleo tubular (1), que define interiormente un alojamiento prismático (2), en el ejemplo de realización práctica elegido prismático-cuadrangular, con chaflanes (3) en sus aristas, siendo dicho núcleo tubular (1) exteriormente cilíndrico y quedando alojado y estabilizado en el seno de una envolvente (4) también cilíndrica, de un material suficientemente resistente, como por ejemplo el complejo a base de papel, plástico y aluminio a que se ha hecho mención con anterioridad, sin que este producto sea en modo alguno limitativo.In view of the figures outlined you can be observed as the formwork for prismatic columns that the proposed invention is constituted, as a conventional formwork of this type, from a tubular core (1), which defines internally a prismatic housing (2), in the example of chosen practical realization prismatic-quadrangular, with chamfers (3) in their edges, said tubular core (1) being externally cylindrical and being housed and stabilized within an envelope (4) also cylindrical, of a sufficiently resistant material, such as for example the complex based on paper, plastic and aluminum to which mention has been made previously, without this product being in Somehow limiting.
Como también es convencional el núcleo tubular (1) está constituido por cuatro segmentos cilíndricos (5), de poliuretano expandido u otro material ligero similar, con un revestimiento estanco (6), al menos por su cara interna, en orden a estanqueizar convenientemente la cámara o receptáculo (2) en la que va a formarse la columna, evitando la pérdida de fluidos y mejorando el acabado superficial de la misma.As the tubular core is also conventional (1) consists of four cylindrical segments (5), of expanded polyurethane or other similar lightweight material, with a watertight lining (6), at least on its inner face, in order to conveniently seal the chamber or receptacle (2) in which the column is going to form, preventing fluid loss and improving the surface finish of it.
Pues bien, de acuerdo ya con la invención el revestimiento estanco (6) adopta una configuración tubular, de manera que ofrece una superficie de cerramiento perimetral totalmente continua, determinando un perfecto acabado interior para el encofrado, que se transmitirá posteriormente al acabado superficial de la columna, y de manera que dicho revestimiento (6), por su propia naturaleza plástica, actúa como bisagra para los segmentos cilíndricos (5), tanto en el caso de existir los chaflanes (3) del ejemplo de realización práctica representado en las figuras, como cuando dichos chaflanes no existen.Well, according to the invention, the Watertight lining (6) adopts a tubular configuration of way that offers a perimeter enclosure surface totally continuous, determining a perfect interior finish for the formwork, which will be transmitted after finishing surface of the column, and so that said lining (6), by its own plastic nature, it acts as a hinge for cylindrical segments (5), both in the case of existing chamfers (3) of the practical embodiment shown in the figures, as when said chamfers do not exist.
Por su parte y para permitir el debido acoplamiento del núcleo tubular (1) en el seno de la envolvente o funda exterior (4), ésta incorpora un corte (8) en correspondencia con una de sus generatrices, de manera que a través de este corte y por la naturaleza del material constitutivo de la envolvente, ésta puede deformarse radialmente, tal como muestra la figura 3, tanto para permitir la implantación del núcleo tubular (4) en su interior como para permitir el interacoplamiento de varias envolventes o fundas, en situación de almacenaje y transporte, como también muestra la figura 3, consiguiéndose paralelamente una drástica reducción en la ocupación volumétrica de tales fundas (4), (4'), (4''), ... en tal situación de inoperancia.For its part and to allow due coupling of the tubular core (1) within the envelope or outer sheath (4), this incorporates a cut (8) in correspondence with one of its generatrices, so that through this cut and due to the nature of the envelope constituent material, it can be radially deformed, as shown in figure 3, both to allow the implantation of the tubular core (4) inside as to allow the intercoupling of several envelopes or covers, in storage and transport situation, as well as shows figure 3, achieving a drastic parallel reduction in volumetric occupancy of such covers (4), (4 '), (4 ''), ... in such an inoperative situation.
No obstante y como ya se ha apuntado con anterioridad, la envolvente o funda (4) de retención para el núcleo tubular (1), puede ser de cualquier otra naturaleza, como por ejemplo de naturaleza metálica, a base de dos chapas semicilíndricas, abisagradas por uno de sus bordes y con medios complementarios de cierre sobre el otro.However, and as already pointed out with previously, the envelope or retention sleeve (4) for the core tubular (1), can be of any other nature, as per example of a metallic nature, based on two plates semi-cylindrical, hinged by one of its edges and with means Complementary closure over the other.
En cualquier caso y como se deduce de lo anteriormente expuesto, la funda o envolvente exterior (4) es reutilizable dado que el citado corte (8) de la misma permite su desmontaje con respecto al núcleo tubular (1), el cual sí será eliminado, y su reutilización con un nuevo núcleo tubular.In any case and as follows above, the outer sheath (4) is reusable given that the aforementioned cut (8) thereof allows its disassembly with respect to the tubular core (1), which will be removed, and its reuse with a new tubular core.
En el ejemplo de realización práctica representado en las figuras, en el que la envolvente o funda tubular (4) es elásticamente deformable y cuenta simplemente con un corte (8) en sentido de sus generatrices, con dicha funda colabora una cincha o fleje exterior y envolvente (9), con su correspondiente elemento tensor y de cierre (10), capaz de mantener el corte (8) perfectamente cerrado y, consecuentemente, la funda tubular (4) perfectamente inmovilizada, como si se tratase de una funda convencional carente de dicho corte (8).In the example of practical realization represented in the figures, in which the envelope or sheath Tubular (4) is elastically deformable and simply has a cut (8) in the sense of its generatrices, with this cover collaborates an outer and wrapping strap or strap (9), with its corresponding tensioning and closing element (10), capable of maintaining the cut (8) perfectly closed and, consequently, the tubular sheath (4) perfectly immobilized, as if it were a cover conventional lacking said cut (8).
La citada cincha exterior (9) citada y representada en los dibujos, constituye una mera solución dentro de una amplísima gama de posibilidades al efecto, ya que podrían utilizarse igualmente aros de hierro u otro material dotados de un cierre de presión.The aforementioned outer webbing (9) cited and represented in the drawings, it constitutes a mere solution within a wide range of possibilities for this purpose, since they could also be used iron hoops or other material provided with a pressure closure
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200400436A ES2264313B1 (en) | 2004-02-24 | 2004-02-24 | FORMWORK FOR PRISMATIC COLUMNS. |
| PCT/ES2004/000235 WO2005083199A1 (en) | 2004-02-24 | 2004-05-25 | Formwork for prismatic columns |
| EP04734695A EP1719856A1 (en) | 2004-02-24 | 2004-05-25 | Formwork for prismatic columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200400436A ES2264313B1 (en) | 2004-02-24 | 2004-02-24 | FORMWORK FOR PRISMATIC COLUMNS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2264313A1 true ES2264313A1 (en) | 2006-12-16 |
| ES2264313B1 ES2264313B1 (en) | 2007-11-16 |
Family
ID=37813856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200400436A Expired - Fee Related ES2264313B1 (en) | 2004-02-24 | 2004-02-24 | FORMWORK FOR PRISMATIC COLUMNS. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2264313B1 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381231A (en) * | 1943-03-15 | 1945-08-07 | Clifton T Spear | Fish lure |
| GB805437A (en) * | 1956-07-31 | 1958-12-03 | Sonoco Products Co | Double section paper tube form for concrete columns |
| DE2001040A1 (en) * | 1970-01-12 | 1971-07-22 | Horst Schmolmann | Mechanical fuse for use as a timer and impact cylinder for hand grenades, rifle grenades and their combination |
| EP0440587A1 (en) * | 1990-01-30 | 1991-08-07 | Construmat Ag | Form for polygonally-shaped columns |
| WO1993014287A1 (en) * | 1992-01-10 | 1993-07-22 | Di Cosmo, Patrick | Form for casting building elements |
| ES2042363A1 (en) * | 1991-05-29 | 1993-12-01 | Ruiz Navarro Dolores G | Method for manufacturing a formwork for shuttering a pillar. |
| US5376316A (en) * | 1992-07-17 | 1994-12-27 | Sonoco Products Company | Method of making a concrete column with a concrete column forming tube |
| ES2113777A1 (en) * | 1994-03-29 | 1998-05-01 | Ruiz Navarro Dolores G | Improvements to recoverable formwork (shuttering) for the formation of polygonal pillars |
| ES2170020A1 (en) * | 2000-11-02 | 2002-07-16 | Salinas Jose Manuel Valero | Formwork for cylindrical columns using narrow laminae of plastified wood or rigid plastic |
| US20030218265A1 (en) * | 2002-03-14 | 2003-11-27 | Garcia-Gutierrez Juan Ignacio | Mold and process for casting and manufacturing of concrete structural columns |
-
2004
- 2004-02-24 ES ES200400436A patent/ES2264313B1/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381231A (en) * | 1943-03-15 | 1945-08-07 | Clifton T Spear | Fish lure |
| GB805437A (en) * | 1956-07-31 | 1958-12-03 | Sonoco Products Co | Double section paper tube form for concrete columns |
| DE2001040A1 (en) * | 1970-01-12 | 1971-07-22 | Horst Schmolmann | Mechanical fuse for use as a timer and impact cylinder for hand grenades, rifle grenades and their combination |
| EP0440587A1 (en) * | 1990-01-30 | 1991-08-07 | Construmat Ag | Form for polygonally-shaped columns |
| ES2042363A1 (en) * | 1991-05-29 | 1993-12-01 | Ruiz Navarro Dolores G | Method for manufacturing a formwork for shuttering a pillar. |
| WO1993014287A1 (en) * | 1992-01-10 | 1993-07-22 | Di Cosmo, Patrick | Form for casting building elements |
| US5376316A (en) * | 1992-07-17 | 1994-12-27 | Sonoco Products Company | Method of making a concrete column with a concrete column forming tube |
| ES2113777A1 (en) * | 1994-03-29 | 1998-05-01 | Ruiz Navarro Dolores G | Improvements to recoverable formwork (shuttering) for the formation of polygonal pillars |
| ES2170020A1 (en) * | 2000-11-02 | 2002-07-16 | Salinas Jose Manuel Valero | Formwork for cylindrical columns using narrow laminae of plastified wood or rigid plastic |
| US20030218265A1 (en) * | 2002-03-14 | 2003-11-27 | Garcia-Gutierrez Juan Ignacio | Mold and process for casting and manufacturing of concrete structural columns |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2264313B1 (en) | 2007-11-16 |
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