Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash – Architrave; i.e. – finish strip on floor – ceiling – or wall...
Patent
1989-08-28
1990-11-27
Murtagh, John E.
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Architrave; i.e., finish strip on floor, ceiling, or wall...
52741, E06B 112
Patent
active
049726455
DESCRIPTION:
BRIEF SUMMARY
The present invention refers to a door frame manufactured from sheet metal profiles, which profiles form the top and side pieces of the frame, and which sheet metal profiles are designed and arranged in a manner to receive between the side shanks of the profile, wall portions adjacent to the door frame, whereby the top piece and the side pieces within the corner portions at one hand are arranged to over-lap each other and on the other hand are equipped with means for mutual interconnection.
BACKGROUND OF THE INVENTION
Door frames made of wood require besides a rather extensive mounting work also quite a lot of subsequent work, such as filling, painting, mounting of architraves for the door and painting and filling of these.
For partition walls consisting of plaster board on a steel metal stud frame there are specially produced door frames made of sheet metal, which are attached to the steel metal stud via cap profiles forming architraves. These give the wall a particular tone, which can be accepted in offices and similar environments, but hardly in dwelling houses.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a simple and inexpensive door frame, which can be attached to partition walls of different types independent of their design and which frame by some simple manipulations is mounted and finished to a complete unit, with architrave fillets and without the necessity of filling and painting work. The mounting furthermore shall be so easy to accomplish that also a non-expert shall be able to mount the door frame. These tasks have been solved in that the side pieces are laterally cross-cut, that the end portions of the top piece are cut out in accordance with the shape of the associated side pieces, whereby the end portions of the side shanks of the side pieces are extended and adapted to overlap the corresponding side shanks of the end portions of the side pieces, that the connecting means comprises on one hand a downwardly deflected tongue, designed at the intermediate portion of the top piece and on the other hand a groove provided at the corresponding intermediate portion of the side portion, and that the portion immediately above the groove is offset in a direction obliquely inwards towards the shanks thereby forming an upwardly open passage.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will hereinafter be further described with reference to the accompanying drawings which show an embodiment.
FIG. 1 shows the upper part of a door frame in accordance with the invention as seen from the front and partly in cross section.
FIG. 2 shows a section along line II--II in FIG. 1.
FIG. 3 is a section along line III--III in FIG. 2.
FIG. 4 shows in perspective two end portions of top piece and side piece of the frame, which pieces together form one corner connection of the frame.
FIG. 5 is a section along line V--V in FIG. 2.
FIGS. 6 and 7 show sections through end portions of the top piece and side piece during the mounting operation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The door frame 10 according to the invention consists of a sheet metal profile having a mainly U-shaped cross section and which profile is subdivided into a top piece 11 and two side pieces 12. The door frame profile in conventional manner is provided with a stop edge 13 for a door leaf 14, which stop edge is arranged in the intermediate portion 15 of the U-shaped profile between its shanks 16. The profile furthermore is designed so that between the shanks 16 can be received the wall portion 17, which borders the door opening 18, such as shown in FIG. 2, and to which wall portion the sheet metal profile is attached by means of proper means 19, which e.g. can be self-tapping screws.
The side pieces 12 of the frame 10 has a length exceeding the height of the door opening 18 with half a shank length, and which side pieces are cut off at right angle to their longitudinal axes. The end portions of the top piece 11 however are cut out, thus that they obtain a shape complementary to the shape of t
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patent: 3429076 (1969-02-01), Fortsch
patent: 3552085 (1971-01-01), Woodrun
patent: 4228630 (1980-10-01), Englert
patent: 4513549 (1985-04-01), Wendt
Gejland Kjell
Hoglund Anders
Lindab Platisol AB
Murtagh John E.
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