Static structures (e.g. – buildings) – In situ attached-type channel or trim strip – Portal or closure trim
Patent
1994-02-18
1996-10-22
Friedman, Carl D.
Static structures (e.g., buildings)
In situ attached-type channel or trim strip
Portal or closure trim
5271804, E04C 238
Patent
active
055665241
DESCRIPTION:
BRIEF SUMMARY
My invention relates to a coupling system of profiles for door and window frames by means of a rotating, profile connection key, between a profile and a frame.
The invention has a particular, but not exclusive application as a fixation system for wood profiles, for attaching a wooden frame or trim strip to inner aluminum window and door frames.
BACKGROUND ART
In the prior art, it is known that to secure wood and aluminum profiles using rotating, profile connection keys.
Examples of these systems have been disclosed in the documents FR,A,2516122 (ZAPP), AT,B,308361 (SOMMER) and PCT/IT90/00090 (ARCHIMEDE PROGETTI). The first two solutions reveal a profile connection key with two opposite key-shaped tapering flanges, with a central connection neck able, by means of the two opposite tapers of the flanges, to enable the coupling of profiles with a direct axial insertion (orthogonal in respect to the groove of the profile) with a successive connection by rotating 90.degree. the same profile connection key.
The third solution provides instead, on one side, a key-shaped tapered flange and on the other a disc-shaped flange, which must be previously inserted head first inside one of the grooves of the profiles and then coupling the second profile by means of a direct orthogonal coupling and a successive rotation of 90.degree. of the profile connection key.
These solutions, even if they, provide the possibility to couple two profiles generally inside the respective dovetail or undercut groove, have the drawback that they are free to move or slide inside the respective groove or have a slight interference, consequently: inserted in the groove on the side of profile without interference, it is not possible to keep them in a position for the coupling with the second profile unless we make a horizontal assembly during the assembly or vertical re-assembly and then proceed to the re-spacing and fixation one at a time; positioning for slippage.
DISCLOSURE OF INVENTION
The object of the present invention is to eliminate the above-mentioned drawbacks.
This and other objects are achieved by means of a coupling system for profiles of door and window frames, utilising a plurality of profile connection keys spaced along the profile. The profile connection keys each having a key hooking head on one side and a disc-shaped flange on the other, connected by a neck with an intermediate key shaped spacer (key to allow rotation of the entire device for keying two separate pieces), characterised in that the disc-shaped flange has a modified disc-shaped form with a resilient interference protrusion on two orthogonal crossing axes respectively, the point where they cross coinciding with the longitudinal axis of said key hooking head.
The method is characterised more particularly in that; the first profile even when the orthogonal axes are rotated in respect to the initial position, up to a maximum of 45.degree., It is possible, after having inserted the disc-shaped flange of the profile connection key inside said first profile and having rotated at 45.degree. in respect to the interference axes in the first profile, to permit said profile connection key to move up and down freely inside the respective groove of the first profile. In addition, each profile connection key, once in a coupling position, is rotated 45.degree. in order that the free protruding key hooking head is disposed longitudinally in respect to the groove of the first profile, resting there resiliently held by the interferenece protrusions, allowing insertion of the key hooking head in the second profile, and rotating each profile connection key 90.degree., to dispose the disc-shaped flange in a second stable interference position.
In this way we obtain the advantage to have the possibility to: profile, profile on them, for the definitive and final coupling.
With these operations, thanks to the interference system according to an angle of rotation with free slippage at an angle of rotation different if associated to the position of the connection of the second flange
REFERENCES:
patent: 2274730 (1942-03-01), Owen
patent: 2867014 (1959-01-01), Fredricksen
patent: 3837119 (1974-09-01), Lonneally et al.
patent: 4126912 (1978-11-01), Johnson
patent: 4639970 (1987-02-01), Adams
Archimede Progetti Srl
Friedman Carl D.
Jaskiewicz Edmund M.
Smith Creighton
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