Static structures (e.g. – buildings) – Cupola or skylight
Reexamination Certificate
1999-04-28
2001-03-20
Kent, Christopher T. (Department: 3635)
Static structures (e.g., buildings)
Cupola or skylight
C052S019000, C052S072000
Reexamination Certificate
active
06202373
ABSTRACT:
BACKGROUND OF THE INVENTION
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 sheet profiles with a substantially L-shaped cross-section with a first wall portion covering a narrow edge zone of the exterior surface of the insulating pane and a second wall portion extending substantially in parallel with an edge surface of the insulating pane, a pivoting hinge provided at the top members of the frame and sash structures, the axis of which pivoting hinge is defined by engagement between a hook member integral with said second wall portion of the metal sheet profile of the sash top member and a hinge pin forming member of a fitting member connected with the frame top member, as well as securing means for maintaining the engagement between the hook member and the hinge pin forming member within a predetermined range of opening angle for the sash structure.
A window of this type is known from EP-A-0 410 369 and from international patent application No. WO93/11332. In these windows the entire sash structure and the fitting member connected with the frame top member are manufactured as extruded profiles. In the first-mentioned window the hinge members are constituted by a curved upward protrusion on the frame top member and a gasket placed in a downwards open groove in the sash top member and are permanently engaged without any possibility of disengagement, the movement of the sash top member being limited by adjacent parts of the frame top member or a superjacent sash profile. In the latter window the securing means comprise a block which is displaceably positioned in a groove in a sash side member and which may serve partly as an anchoring element for a locking member fastened in the frame structure in case of a not openable window, partly for releasable coupling with an operating arm in case of an openable window.
In consideration of the release of this coupling by manual operation, said block should normally be placed at a considerable distance from the pivoting hinge at the frame and sash top members, which on account of tolerances in the coupling members does not give full safety against unintentional release of the coupling. Furthermore, each release of the coupling, also within the opening angle range, will make it possible to dismount the sash relative to the frame.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a window of the type mentioned by way of introduction, said window having a less complicated construction in respect of the design of the sash structure, the hinge itself and the securing means for maintaining the engagement between the members of the pivoting hinge and having an improved safety against unintentional release of the sash for dismounting.
This object is according to the invention met by a window which is characterized in that said hook member is substantially V-shaped with a first portion extending substantially perpendicular to the second wall portion, and a second portion angular relative thereto, that the fitting member is substantially L-shaped and that the hinge pin forming member in the closed position of the window abuts said first portion of the V-shaped hook member, and that said securing means are constituted by holding means, which are fastened to at least one adjacent pair of the side members of the frame and sash structures at a comparatively short distance from the axis of the pivoting hinge, and which in an opening angle range which, calculated from the closed position, is smaller than the opening angle of the V-shaped hook member, hold the V-shaped hook member and said hinge pin forming member in mutual engagement, but which, when turning the sash structure beyond said opening angle range, allow removal of the sash structure from the frame structure.
This design makes it possible to manufacture all parts of the sash structure and the hinge by means of simple bending operations, and the holding means provide a safe securing of the engagement.
The opening angle of the V-shaped hook member preferably lies within the range of 20 to 30°.
The holding means are according to an embodiment of the invention constituted by blocks with part-cylindrical guide surfaces with axis in the pivot axis of the hinge.
In an embodiment of the invention a window operator is with a view to opening the sash structure to a ventilation position within said opening angle range mounted in connection with the bottom members of the frame and sash structures, which operator in addition to opening the window also holds the sash within the angular range, in which the securing means hold the hinge members in engagement with each other.
The operator may be an electrically driven chain operator with an operating chain detachably connected with the bottom member of the sash structure.
The invention will be explained in the following with reference to an embodiment as shown in the accompanying drawing, in which
REFERENCES:
patent: 2909254 (1959-10-01), Hallock
patent: 4987705 (1991-01-01), Sampson et al.
patent: 5103603 (1992-04-01), Verby et al.
patent: 5207036 (1993-05-01), Sampson et al.
patent: 5669186 (1997-09-01), Verby et al.
patent: 430138 (1967-08-01), None
patent: 30 48 961 A1 (1982-07-01), None
patent: 0 410 369 A2 (1991-01-01), None
patent: 406787 (1979-02-01), None
patent: WO 93/11332 (1993-06-01), None
Kent Christopher T.
Shannon John P.
Velux Industri A/S
Venable
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