EP2226457A2

EP2226457A2 - Semifinished product construction for making window and door frames and method therefor

Info

Publication number: EP2226457A2
Application number: EP10151803A
Authority: EP
Inventors: Roberto Radaelli
Original assignee: Radaelli Angelo Sas Di Renata Vagni Radaelli & C
Current assignee: Radaelli Angelo Sas Di Renata Vagni Radaelli & C
Priority date: 2009-01-27
Filing date: 2010-01-27
Publication date: 2010-09-08
Also published as: EP2226457A3; IT1397160B1; ITMI20090090A1

Abstract

A semifinished product construction (1) for making window and door frames, characterized in that said semifinished product construction (1) comprises a finished section member (1) adapted to be cut and directly joined to like section members (1) by plug-in coupling means (2,3) to provide a finished window or door frame.

Description

BACKGROUND OF THE INVENTION

The present invention relates to a semifinished product construction for making window and door frames.
As is known, window and door frames conventionally comprise wood, steel or aluminium materials or alloys thereof, made of either non contoured or contoured section members, or also made of a plastic material.
Prior methods for making the above window and door frames comprise several processing steps involving a comparatively high amount of waste materials, in addition to requiring a high capability and skillness by the making or assembling operator.

SUMMARY OF THE INVENTION

Accordingly, the aim of the present invention is to provide a semifinished product allowing to easily make finished window and door frames while reducing to a minimum the required operations and waste processing materials.
Within the scope of the above mentioned aim, a main object of the invention is to provide such a semifinished product allowing to easily and quickly make window and door frames, thereby providing an improved safe product, without the need of performing additional processing operations, such as painting operations, on the semifinished material.
Another object of the present invention is to provide such a semifinished product construction allowing the makers of combined wood-wood, wood and wood/aluminium material window and door frames to achieve a very high selling and managing operating flexibility with respect to finished bar or rod elements, for any desired amount of finished products to be used in their frame making operations.
Another object of the present invention is to provide such a semifinished product construction which further allows the wood window and door frame makers to simply manage the semifinished products, without waste and in an environmental advantageous manner.
Another object of the present invention is to provide such a semifinished product construction which, owing to its specifically designed features, is very reliable and safe in operation.
According to one aspect of the present invention, the above mentioned aim and objects, as well as yet other objects, which will become more apparent hereinafter, are achieved by a semifinished product construction for making window and door frames, characterized in that said semifinished product construction comprises a finished section member adapted to be cut and directly joined to like section members by plug-in coupling means to provide a finished window or door frame.
More specifically, for wood window and door frames, said semifinished product construction comprises two different types of wood section members, a first wood section member, either in a block form or in a veneer coated form, with wood sheared pieces for the inner side, and a second block section member, which is suitably processed by an impregnating paint, for the outer side.
The outer section members and inner section members being joined to one another by a direct plug-in coupling system, and being supplied in a painted and finished assembling ready condition.
Thus, the invention provides a semifinished product construction allowing to reduce to a minimum the required making operations and waste deriving from the processing steps.

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the present invention will become more apparent hereinafter from the following detailed disclosure of a preferred, though not exclusive, embodiment of the invention, which is illustrated, by way of an indicative, but not limitative, example in the accompanying drawings, where:

Figure 1 is a perspective view of two semifinished elements cooperating for making the semifinished product construction according to the present invention;
Figure 2 is a perspective view of a semifinished element including a female type of fitting or coupling;
Figure 3 is a further perspective view of a semifinished element including a male type of fitting or coupling;
Figure 4 is an exploded elevation view of the coupling region of two semifinished elements;
Figure 5 is a further elevation view of the coupling region of the semifinished elements;
Figure 6 is a cross-sectional elevation view of the coupling region of the semifinished elements;
Figure 7 is a schematic elevation view of a frame made by using the semifinished product construction according to the present invention;
and
Figure 8 shows a schematic view of a crossmember and an upright member including substantially rectilinear plug-in and hollow arrangements for providing a perpendicular coupling, that is a 90° coupling, of the section members.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to the number references of the above mentioned figures, the semifinished product construction according to the present invention, which has been generally indicated by the reference number 1, comprises a component element which, as is made of a wood material, includes two different types of wood section members that is a first wood section member, either in a block form or in a veneer coated form, with wood sheared pieces for the inner side, and a second block section member, which is suitably processed by an impregnating paint, for the outer side.
Said outer and inner section members being joined to one another by a direct plug-in coupling system, and being accordingly supplied in a painted and finished assembling ready condition.
The figures show a coupling system for coupling two section members for making a window or door frame.
More specifically, the herein shown coupling system comprises a shaped tenon 2 and mortise 3 assembly, including a contoured tenon member 2 formed on a section member, and a mortise element 3, formed on the other section member to be coupled to the first section member.
In the embodiment being herein disclosed, the contoured tenon element 2 and mortise element 3 are formed on respective surfaces 4, slanted at 45°, formed at respective end portions of the section member.
Advantageously, said tenon and mortise elements have a S shape or a rounded L shape, or any other curved or angled contour, to provide the coupling or connecting arrangement with an improved mechanical strength.
The coupling surfaces of the section members could also have differently cut coupling angles.
Moreover, the shape and sizes of the above tenon elements and related mortise elements can be changed according to requirements and as preferred by their maker.
The coupling method, in addition to using angular plug-in coupling arrangements, also provides to form the connection or coupling by perpendicular plug-in elements, that is by forming a 90° angle with respect to one another.
This may be achieved by using a tenon element and a corresponding mortise element having a substantially rectilinear arrangement, as shown in figure 8.
Thus, the construction according to the present invention allows to provide a completed semifinished product, allowing to reduce to a minimum the operations required for making the finished product, thereby providing a finished window or door frame, while limiting to a minimum the waste materials.
Moreover, the inventive semifinished product construction allows to make wood window and door frames in a very simple manner since the invention provides an advanced and safe product, without the need of performing additional processing operations thereon, such as painting and the like.
For an aluminium window and door frame, the inventive semifinished product construction allows the window and door frame makers to achieve a very high operating flexibility, since they may buy already finished bar or rod components, for any desired amounts of semifinished product construction.
In making wood window and door frames, the inventive semifinished product construction, moreover, may be simply managed without waste and in an advantageously favorable environmental manner.
The present invention further relates to a method for making window and door frames, which method comprises the step of making said window and door frames by a direct type of plug-in operation with either an angled or a straight junction to provide window and door frames of a broad range of wood/wood and wood/aluminium window and door frame arrangements.
The method according to the present invention, in particular, comprises the step of performing a mechanical type of processing step which is carried out on head portions of finished section members, thereby allowing to achieve an east assembling and a very high tightness thereof.
The above mentioned operations, in particular, can be carried out by using a wood machining machine tool, designed for forming on the head portion of the section member a female cavity and a male plug-in element, to allow the two section members to be easily and quickly connected.
The elements forming the window and door frames are firmly coupled to one another by applying in said female cavity a high strength glueing material which, upon contacting the wood, will provide an improved connection tightness.
Moreover, to provide firm couplings of the section members, that is of the male and female coupling fittings, a high strength glueing material, preferably of a single component polyurethane type, free of solvent materials and shrinkage problems is advantageously used.
Said glueing materials, in particular, will be cured under atmospheric moisture thereby providing a glued connection of very high strength, resistant to water, high temperatures and ageing.
It has been found that the invention fully achieves the intended aim and objects.
In practicing the invention, the used materials, as well as the contingent size and shapes, can be any, according to requirements.

Claims

A semifinished product construction for making window and door frames, characterized in that said semifinished product construction comprises a finished section member adapted to be cut and directly joined to like section members by plug-in coupling means to provide a finished window or door frame.
A semifinished product construction, according to claim 1, characterized in that, with said window or door frame being made of a wood material, said section member comprises two different types of wood section members, a first wood section member, either in a block form or in a veneer coated form, with wood sheared pieces for the inner side, and a second block section member, which is suitably processed by an impregnating paint, for the outer side; said outer section members and inner section members being joined to one another by a direct plug-in coupling system and being supplied in a painted and finished assembling ready condition.
A semifinished product construction, according to claim 1, characterized in that said coupling means comprise a shaped tenon and mortise assembly, including a contoured tenon, formed on a section member and a mortise element, formed on the other section member to be coupled to the first section member.
A semifinished product construction, according to claim 1, characterized in that said coupling means comprise a tenon-mortise assembly, said assembly including a contoured tenon formed on an inclined surface of a section member and a mortise element formed on an inclined surface of the other section member to be coupled to the first.
A semifinished product construction, according to claim 1, characterized in that said coupling means comprise a tenon and mortise assembly, said assembly comprising a tenon having a S shape, or a rounded L shape, or any other curved or angled contour, formed on a surface of the section member, and a mortise element of corresponding shape and formed on a surface of the other section member to be coupled to the first section member.
A semifinished product construction, according to claim 1, characterized in that said two section members have coupling surfaces which can be cut with different cutting angles, the shape and size of said tenons and related mortises being susceptible to vary according to requirements.
A method for making window and door frames,
characterized in that said method comprises the step of making said window and door frames by a direct type of plug-in operation, with either an angled or straight junction, by using section members having end portions of S or rounded L shape or any other desired curved or angled shape.
A method, according to claim 7,
characterized in that the junction of the section member forming said S or rounded L shape tenon is fixedly plugged-in in a correspondingly shaped mortise thereby providing a female cavity and a male pluggingin element having equivalent contours thereby they can be directly plugged-in into one another.
A method, according to claim 7,
characterized in that said method comprises the step of applying in said female cavity a high strength glueing material, preferably of a single component polyurethane type.
A method, according to claim 7,
characterized in that said method comprises the steps of joining section members even by using perpendicular plug-in arrangements having a plug-in angle of 90°, by using a tenon and a mortise including plug-in elements and cavities which substantially rectilinearly extend.