A frame for doora with a convex profile cut at 45°, in kit form, characterized by a crossbeam and two preformed side jambs on which to install special removable and reversible strips between them that allow for reversibility

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This utility model relates to a frame constituted of a crossbar and two prefabricated side jambs in which it is possible, given their particular profile, to insert special removable and invertible strips between them to allow for reversibility of doors with a convex profile featuring a 45° cut.

As it is known by professionals, doors, regardless of the material used, can vary in aesthetic terms in relation to the shape given to the frame.

Doors can in fact be produced with flat frames cut at 45° or 90° and curved with a characteristic cut at 45°, as well as in other forms similar to the previous ones.

Once the material and aesthetics of the door have been chosen, assembly is done next by installation on a suitable support, the so-called counter-frame. The counter-frame can be considered a sort of door frame that acts as a link between the walls and the frame which is in turn composed of two side jambs with vertical profiles and the crossbar, a horizontal element at its top.

For installing a door it is necessary, therefore, to carry out all preliminary operations, fix the frame to the counter-frame, then check all distances on the lock, top and bottom sides.

Once the door has met functionality requirements, you can proceed to the final fastening of the door to the frame, then seal the gap between the counter-frame and the frame.

The frame is then covered by the casing which are the longitudinal elements, which hide the gap between the wall, by forming a frame around the door, the counter-frame and the frame.

The connection between the door and the frame is carried out by the use of hinges which establish the rotation direction to the right or left.

On the market there are, among other things, reversible doors, i.e. doors that unlike standard doors, allow you to decide the direction of the opening to the left or right.

Such a reversibility feature is present on doors with flat frames cut at 90°, and is realized during the installation process by reversing the two side jambs, which for manufacturing specifications, are virtually identical .

It is more problematic to create reversibility in doors with flat frames cut at 45°. There have presently been found a number of technical solutions that are not always easy to implement in the assembly phase and which bring with them a series of critical issues .

To create reversibility of doors with the flat frame cut at 45 °, there are some frames equipped with side jambs (with preassembled hinges and closure plates) on the market today with a greater than standard height cut at the top and bottom at forty- five degrees.

After having decided the opening side of the door, during assembly cutting the base of the jambs that rest on the floor at 90° will be required, leaving a cut at 45° in the upper part.

This solution, as you might guess, brings with it a number of critical issues, including difficulty achieving an accurate cut of the frame's side jambs. It is also impossible to reuse or replace the frames in the event that the opening side of the door is modified.

75 Reversibility, especially relating to the possibility of reusing the frame, to this day is practically impossible for those with a convex cut at 45° where none of the solutions described in view of the aesthetics of the frame itself are applicable.

80 This model consists of a system that overcomes all of the highlighted critical issues by allowing for the reversibility of convex doors cut at 45 ° without needing the assembler/user to adapt the assembly phase. It also allows the frame to be reused in case

85 of changing the direction of door opening. All this takes place through the particular profile which assumes the side jambs allowing the reversible and interchangeable slats to be inserted allowing the reversibility of the frame.

90 The particular characteristics of the

"reversible" frame, in kit form, object of the present invention should therefore be identified by the reversibility of the convex door at 45 ° which is not altered under the aesthetic profile compared to

95 traditional door seals and retains a structure similar to those of a single piece frame. The invention will now be described, for illustrative but not limitative purposes, according to its preferred embodiment, with particular reference to 100 the accompanying figures and drawings, in which:

- figure 1 shows a perspective view of the reversible frame characterized by the presence of all components;

- figure 2 shows a perspective view of the side jamb and the slat containing housing for the plates;

105 - figure 3 shows a perspective view of a side jamb, the slat containing holes for the housing of the hinges;

- figure 4 shows the double perspective view of a jamb and a slat with a front and rear view;

110 - figure 5 shows a sectional view of the profile of a jamb;

figure 6 shows the detail of the crossbeam connection to the two jambs;

- figure 7 shows in a frontal perspective of the 115 reversible frame components;

- figure 8 shows a rear view perspective of all of the frame components;

- figure 9 shows a rear view of the frame with the door.

120 We highlight the structural elements of the system by referring to the figures as represented, which is the subject of the present patent that should be identified by: two lateral jambs (left and right) with a particular profile (A) and cut at 45 ⁰ (20) , a 125 crossbeam (B) which is also cut at 45 ⁰ and finally two slats (C and D) cut at 45 ⁰ provided with slots and holes.

The lateral jambs (A) of the frame, an essential part of this invention, assumes a particular

130 characteristic profile with a flat base (1), frontal convex (2) and a rear part equipped with a special housing channel (3) of the slats (C and D) .

The distinctive feature of the side jambs (A) is given, as said by the particular profile that they

135 assume by being equipped with a housing channel (3) which is inserted, according to the needs of the alternating door swing (E) , or the slat (C) containing the housing for lock plates or the (D) housing holes for hinges.

140 A second joint will be created for the other casing (5) on the jamb (A), which is already fitted into the front part of the special casing joints (4), once the desired casing (C or D)is positioned in the rear. 145 The frame is also equipped with adequate space

(6) for housing the seal (7) and fastening holes (8) on the upper part to embed the crossbar (B) . The jamb is also provided with holes (9) on the base (1) that allow for fastening to the slats (C and D) with screws

150 (10).

The two removable and interchangeable slats (C and D) , as said, assume a characteristic cut at 45° (11) in the upper part.

The first slat (C) is provided on one side of the 155 two housings (12 and 13) for the lock plate (14) - to be installed using screws (21) - so that depending on the side in which it is positioned inside the right or left jamb, one of the two slots disappear.

The two housings (12 and 13) are positioned at 160 the far ends of the slat to prevent the latch from deteriorating the profile any time the door closes.

Of course different solution's can be created ranging from a magnetic lock to a traditional one, on the slat (C) without this altering the profile itself 165 or its functionality.

A second slat (D) is provided on two opposite sides of the holes for housing (15) the hinges (16) so that, even in this case, depending on the mounting direction, the holes that are noti used will be hidden

170 from view.

The two slats (C and D) are ¹ also provided with suitable anchor holes (17) which allow for fastening the side jambs (A), once the slat is positioned (C or D) within the housing channel (3) .

175 In a preferred form of installation, the user will first position the crossbeam (B) , holes provided (18), onto the two side jambs (A) by using pegs (19). Then position the slat (D) containing holes (15) for the hinges (16), depending on the preferred door

180 opening side(E), into the housing bore (4) of the frame. Proceed like this also with the other slat (C) fastening everything with screws (10) in the appropriate holes (9). Once the installation is finished the frame can be attached to the counter-

185 frame and the door can be attached.

This invention may be produced with all materials used and suitable for doors, specifying that the exclusive rights on the kit as described also extend to doors with a flat profile at 45 and 90°.

190 The model has been described for illustrative but not limitative purposes according to a preferred embodiment but it is to be understood that variations and/or modifications may be made without departing from the relative scope of protection .

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