Static structures (e.g. – buildings) – Window or window sash – sill – mullion – or glazing – Attaching means securing a pane to a sash member or to...
Reexamination Certificate
1998-01-16
2001-11-27
Aubrey, Beth A (Department: 3635)
Static structures (e.g., buildings)
Window or window sash, sill, mullion, or glazing
Attaching means securing a pane to a sash member or to...
C052S204620, C052S204593, C049S381000
Reexamination Certificate
active
06321494
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
This invention relates to a window structure comprising a frame and an inwardly opening window leaf of a multi glazing type composed of a wooden casement as well as at least two glass panes.
BACKGROUND OF THE INVENTION AND PRIOR ART
Traditionally, the window leaves of previously known wooden window structures have been made with a carrying or supporting casement which surrounds a glass irrespective of whether the window leaf has the form of a single glass or if it comprises one or more additional glasses arranged in inner casements connected to an outer casement. The function of the casement is to form the carrying framework of the window leaf and for this purpose the casement includes wooden portions located inside as well as outside the glass or the outer glass. The outwardly exposed portions of the outer casement will then always be exposed to climatological stresses in the form of alternate moisture loads, wind and direct insolation. During periods of varying temperature the outer glass pane, most often puttied, will be exposed to alternating cold and heat. The glass material has completely other physical shrinkage characteristics than the wood material of the casement, which leads to strong alternate stress loads on the putty joint between the glass pane and the casement. Cracks will arise relatively fast in the putty joint leading to moisture penetration in the woodwork of the casement with the ensuing rot damage, in particular in the bottom part of the casement, which has relatively unprotected cross-cut wood in the corner joints where the side pieces of the casement meet the bottom piece thereof. In order to counteract dilapidation of the window leaves, constantly recurring maintenance of painting, completion of putty and the like, is required.
OBJECTS AND FEATURES OF THE INVENTION
The present invention aims at removing the above-mentioned disadvantages of previously known wooden window structures of the kind initially related to and at creating an improved window structure. Thus, a primary object of the invention is to create a window structure having a window leaf the wooden casement of which is effectively protected against such climatological influences which may lead to rot in the casement. A further object is to connect the outer glass pane of the window leaf to the casement by means of means which do not, as easily as window putty, run the risk of being quickly destroyed as a consequence of variations of temperature and insolation. Another object of the invention is to create a window structure which in its entirety offers a large viewing or panoramic angle for an observer being indoors. A further object is to create a window structure with an improved safety against burglary. It is also an object to create a window structure which is constructionally simple, has a long lifetime and requires a minimum of maintenance.
According to the invention, at least the primary object is attained by the features defined in the characterising clause of claim
1
. Preferred embodiments of the invention are furthermore defined in the dependent claims.
REFERENCES:
patent: 3802127 (1974-04-01), Silvernail
patent: 3878648 (1975-04-01), Maune
patent: 4392330 (1983-07-01), Buhr
patent: 4502249 (1985-03-01), Banford
patent: 5315798 (1994-05-01), Zarwell
patent: 5355625 (1994-10-01), Matsuoka
patent: 367616 (1963-04-01), None
Aubrey Beth A
Farber Mark
Oberg Olle
LandOfFree
Window structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Window structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Window structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2573279