EP1148183A2

EP1148183A2 - Containment forms for building use

Info

Publication number: EP1148183A2
Application number: EP01201414A
Authority: EP
Inventors: Olivio Pivato
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-21
Filing date: 2001-04-19
Publication date: 2001-10-24
Also published as: ITMI20000257V0; IT250250Y1; EP1148183A3; ITMI20000257U1

Abstract

Containment forms (1) for building use comprising a plurality of elements (2,3,4) operatively associated to each other are disclosed, wherein said elements (2,3,4) are provided with connection means (9,10) adapted to obtain a modular structure making said forms.

Description

The present invention relates to containment forms for building use, more particularly forms containing cement or concrete castings to make wall enclosures.
In many constructions either dwelling houses or factories, office buildings and the like, almost always there is an outer fence resting on a wall enclosure, which in this way has not only the function of defining the boundary of the property.
In order to make said wall enclosures forms are known which are mainly made of wood, arranged parallel to one another to contain the concrete casting.
Although these forms solve the mentioned technical problem, they have however several drawbacks.
These forms have problems of connection between the lengths required to contain a complete wall enclosure, more particularly in case of bends or corners.
Another drawback consists of the work required when casting is completed, to make some important elements in the wall, such as the drips, said work increasing the production time and the total costs.
Another serious drawback is the almost practical impossibility to obtain wall enclosures with a really constant thickness. Indeed with the known forms, a constant cross sectional spacing of the forms is not warranted by any device or special element, but depends only on the ability and professional experience of the building workers.
The object of the present invention is to remove the drawbacks belonging to the prior art systems.
Therefore the present invention relates to containment forms for building use which is of practical use and easy to be carried out, allowing to obtain practically finished wall enclosures of a generally constant thickness even near corners or curvilinear stretches.
Briefly the present invention provides for containment forms for building use comprising a plurality of elements operatively associated to each other, said elements being provided with connection means adapted to obtain a modular structure constituting said forms.
The containment forms for building use according to the invention are characterized by the features recited in claim 1.
Further advantageous features are recited in the dependent claims.
Other features and the various details of the containment forms for building use according to the invention will be better understood by reading the following description with reference to the accompanying drawings in which a preferred embodiment is shown as an illustrative but non-limiting example.
Fig. 1 is a perspective view of an element belonging to the containment forms for building use according to the invention.
Fig. 2 is a vertical sectional view of the forms of the invention in use.
Fig. 3 is a perspective view of a second element of the containment forms for building use of the invention.
Fig. 4 is a perspective view of a further element of the forms of the invention.
With reference now to the above mentioned figures of the drawings, the containment forms 1 for building use consist of a plurality of elements 2, 3, 4 serially arranged one after the other on two general parallel rows.
A first embodiment of said elements consists of a straight element 2 having a cross sectional shape generally comprising a first straight length 5, a second straight length 6 at right angles to the first length and a third straight length 7 perpendicular to the second length 6.
Between the lengths 5 and 6 at each end there is a flat plate 8 having connection means to join two elements, where the plate at one end has two pins 9 corresponding to two holes 10 provided on the plate 8 of the other end, but other combinations are also possible.
On the second length 6 perpendicular to both lengths 5 and 7 there is a projection 11 for carrying out the drip when casting the concrete. Said projection may have any suitable cross sectional shape such as a polygonal open shape, a circular shape and so forth, preferably a triangular shape.
The surface of the first length 5 is also provided with matching means to keep constant the spacing of two parallel rows, each row consisting of a plurality of elements making a stretch of said forms 1.
More particularly said matching means may consist of a couple of holes 12, each hole being connected on one side with a generally straight element 13 having another hole 14 adapted to receive conventional blocking means not shown in the drawings for fixing for instance a spacing rod between two straight elements 2 parallel to one another.
The third straight length 7 of the cross sectional shape of the forms at the opposite end relative to the junction with said second length 6, is provided with a further straight piece 15 inclined relative to said third length 7 by an angle greater than 90 degrees.
A second embodiment of said elements constituting said forms 1 consists of an angular element 3 adapted to connect elements at the points of the form 1 having a corner.
Said second embodiment generally comprises the same parts of said element 2. However in this case said length 5, 6 and 7 of the cross sectional shape belong to three couples of plain surfaces mutually intersecting to define the angular element 3.
Also in this case the plates 8 are provided with connection means that may consist of pins 9 and holes 10 as for instance shown in Fig. 3, while the matching means of the straight element 2 may be omitted according to the needs.
A third embodiment of said elements constituting the forms 1 according to the invention consists of a curvilinear element 4 also comprising the same parts of the straight element 2, where the lengths 5, 6 and 7 of the cross sectional shape belong to curvilinear surfaces instead of plain surfaces of said element 2. The matching means may be omitted according to the needs as for the angular element 3.
Said elements 2, 3, 4 are preferably made of stainless steel, galvanized sheet iron or PVC but other materials such as aluminum alloys, polycarbonate and wood may also be provided.
The containment forms for building use of the invention consisting of said plurality of elements 2, 3, 4 are used as follows. Having chosen the area where the wall enclosure should be made, said area is bounded by a plurality of elements 2, 3, 4 according to needs, connected to one another by pins 9 and holes 10 so as to make a modular structure of the forms. Two parallel rows of elements 2, 3, 4 will be generally arranged at predetermined distance, said distance being determined by suitable spacing rods fixed to said matching means.
Concrete casting is then carried out and a construction like that illustrated in the sectional view of Fig. 2 will be obtained. The upper portion of the casting contained by the lengths 15, will be subsequently worked or leveled as required for instance by a wood strickle.
In this way once the forms are removed, the wall enclosure will be practically finished because it is already provided with the drips made by means of the projections 11.
Moreover said wall enclosure will advantageously have the requested thickness and a longitudinal development very close to the theoretical design, in view of the use of said spacing rods fixed to the matching means and of the elements 2, 3 and 4 each having the required different geometrical shape respectively.
It is to be understood that many modifications, adaptations, integrations, variations and substitutions may be made to the embodiment hereinbefore described as an illustrative and non-limiting example, however without departing from the scope of the present invention as defined in the appended claims.

Claims

Containment forms for building use comprising a plurality of elements (2, 3, 4) operatively associated to each other, characterized in that said elements are provided with connection means adapted to obtain a modular structure making said forms.
The containment forms for building use according to claim 1), characterized in that said elements consist of straight elements (2), angular elements (3) and curvilinear elements (4).
The containment forms for building use according to claim 2), characterized in that said elements (2, 3, 4) have a cross sectional shape comprising a first straight length (5) followed by a second straight length (6) at right angles to the first length (5) and a third straight length (7) perpendicular to said second length (6).
The containment forms for building use according to claim 3), characterized in that between said first (5) and second (6) length at each end of said elements (2, 3, 4) there is a flat plate (8) provided with said connection means to join two elements (2, 3, 4) to each other.
The containment forms for building use according to claim 4) characterized in that said connection means comprise on each plate (8) either a couple of pins (9) or a corresponding couple of holes (10).
The containment forms for building use according to claim 3), characterized in that said second straight length (6) is provided with a projection (11) to define the shape of a drip.
The containment forms for building use according to claim 3), characterized in that the cross sectional surface constituting said first straight length (5) is provided with matching means to keep constant the distance between two parallel rows each consisting of a plurality of said elements (2, 3, 4) making a stretch of said forms (1).
The containment forms for building use according to claim 7), characterized in that said matching means comprise a couple of holes (12) each being connected at one side with a straight element (13) having a further hole (14) adapted to receive blocking means to fix a spacing rod between two elements (2, 3, 4) parallel to each other.
The containment forms for building use according to claim 3), characterized in that the third straight length (7) of the cross sectional shape at the opposite end relative to the junction with said second straight length (6), is provided with a further straight piece (15) inclined relative to said third straight length (7) at an angle greater then 90 degrees.
The containment forms for building use according to claim 3), characterized in that said straight lengths (5, 6, 7) of the cross sectional shape of said angular element (3) belong to three couples of plain surfaces intersecting with each other so as to define said angular element (3).
The containment forms for building use according to claim 3), characterized in that said straight lengths (5, 6, 7) of the cross sectional shape of said curvilinear element (4) belong to curvilinear surfaces.
The containment forms for building use according to claim 1), characterized in that said plurality of elements (2, 3, 4) is alternatively made of stainless steel, galvanized sheet iron, PVC, aluminum alloys, polycarbonate and wood.