Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash
Reexamination Certificate
1999-04-28
2001-10-02
Stodola, Daniel P. (Department: 3634)
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
Reexamination Certificate
active
06295774
ABSTRACT:
The present invention relates to a window, in particular for mounting in an inclined roof surface, comprising a frame structure with top, bottom and side members and a relative to the frame structure openable, top-hung sash structure with an insulating pane enchased between top, bottom and side members of metal or plastic profiles and manufactured with dimensions corresponding to the exterior dimensions of the frame structure for direct abutment on a gasket fastened to the exterior edge surfaces of the top, bottom and side members of the frame structure.
Windows of this type and of many different designs are among others known from DK Patent No. 74,858. In consideration of comfort and a general wish to save energy, big demands are made on among others the tightness and the insulating property of the window. On the other hand the manufacture of the window is to be rationally made without too many cost-increasing factors and with a cost-minded choice of material.
On this background the object of the invention is to provide a window which is both easy and cheap to manufacture, but which still meets the demand made in respect to insulating property, tightness, etc.
This object is according to the invention met by a window which is characterized in that the top, bottom and side members of the frame structure comprise wood profiles which have substantially parallelogram-shaped cross-sections, said exterior edge surfaces being positioned in a common plane, with which the adjacent opposite side faces of the profile cross-section form an angle of 95 to 140°.
By this embodiment the desired simple manufacture and good tightness between sash and frame are provided. Furthermore, the parallelogram-shaped cross-section gives a higher stability in the corners of the frame structure than a rectangular cross-section of the same area. Furthermore, the parallelogram-shaped design of the wood profiles of the frame structure gives in combination with the big pane area an improved total light incidence compared with a window, in which the side surfaces of the frame structure extend perpendicularly to the sash plane. Furthermore, the advantage is obtained that exchange of accessories like roller blinds and insect nets is facilitated, as the access to the window is made easier on account of the oblique interior sides of the frame structure.
The wood profiles may be connected in profiled mitre joints, which in addition to making the mounting of the frame structure of the window simple provides an additional improvement of the insulation, the end faces of the wood profiles, which are badly insulating, being covered.
In view of a further saving of the expensive wood material, a preferred embodiment is characterized in that the thickness of the wood profiles is comparatively small and that for improving the heat insulating properties additional insulating elements of a good heat-insulating material are retained to the side of the profile cross-section which is intended to form the interior side for the top, bottom and side members of the frame structure.
The top, bottom and side members of the frame structure are on the interior side facing the light admitting area of the window covered by metal sheet profiles for providing a good heat transmission to border areas of the insulating pane. This heat transmission brings about a heating of the edge of the pane itself, whereby the formation of condensation is considerably reduced relative to windows having a traditional “cold” pane edge.
The additional insulating elements preferably extend over a part of the width of the wood profiles and are supported by abutment lists of wood connected with the wood profiles.
The above-mentioned reuse has been further improved in an embodiment, in which the top, bottom and side members of the frame structure with said additional insulating elements and possible heat-transmitting metal sheet profiles as a whole is connected solely by means of non-adhesive connection members in the mitre joints. In this way the window may be assembled by and large completely without separate connection members and will consequently be easily dismountable with a view to reusing the various components of the window.
Further embodiments of the invention will appear from the remaining independent claims, which have not been mentioned above.
REFERENCES:
patent: 1045580 (1912-11-01), Mc Clellan
patent: 4250673 (1981-02-01), Hubbard
patent: 4423575 (1984-01-01), Lagergren et al.
patent: 4776141 (1988-10-01), Powell
patent: 430138 (1967-08-01), None
patent: 30 48 961 A1 (1982-07-01), None
patent: 149991 (1984-11-01), None
patent: 74858 (1952-10-01), None
patent: 406787 (1979-02-01), None
Anderson Chad C.
Shannon John P.
Stodola Daniel P.
Thompson Hugh B.
Venable
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