Window member
AssigneeV. Kann Rasmussen Industri A/S
InventorsKristian Haugaard, Knud E. Nissen
Life of this patent
Estimating the term…
Abstract
In a frame-shaped window member (1 or 2) including a framed core (10) made from wood material and provided with a covering (11) moulded thereon, preferably polyurethane, and supporting on its side facing the open air a weather-resisting shield (12), the part (11') of the covering facing the inside air has a far larger thickness and thus a corresponding minor permeability to vapor than the adjacent covering parts (11") which fully or partly cover the remainder of the surface of the core.
Claims12
A window frame member comprising a core made from wood or a wood-based material and having an external side intended to face outside air and an internal side intended to face inside air, and a covering of a plastics material molded on the core, wherein the improvement comprises the arrangement on the external side of the frame member of a weather protective shield defining together with the frame member an internal space ventilated by the outside air and the application of the covering to the core so as to offer a high degree of impermeability to vapor solely on the internal side of the member.
In a window frame member having a core of a wood-based material, an external surface exposed to outside air, an internal surface exposed to inside air, and a covering of plastics material on the core, the improvement comprising:
- a weather protective shield spaced from said external surface, said shield defining with said external surface a space ventilated by the outside air, and
- said covering being more impermeable to vapor on said internal surface than on said external surface.
A window frame including a plurality of window frame members and defining a plane, wherein each window frame member comprises:
- a core of wood-based material;
- an external surface exposed to outside air;
- an internal surface exposed to inside air;
- a covering of plastics material on the core;
- a weather protective shield spaced from said external surface, said shield defining with said external surface a space ventilated by the outside air;
- wherein said covering is more impermeable to vapor on said internal surface than on said external surface, and said core comprises at least one piece of plywood defining layers and constituting a dominating portion of the cross-sectional area of said frame member, at least the major portion of the layers being oriented substantially perpendicular to the plane defined by the window frame.
Dependencies are inferred from the claim text.