# US 2008/0104904 A1 · Window > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0104904 A1 - Document ID: US20080104904A1 - Status: Published application - Kind: A1 - Application number: 11/665,904 - Filed: 2005-10-20 - Published: 2008-05-08 - Earliest claimed: 2004-10-20 - Assignees: Walch AG - Inventors: Christian Walch - Web page: https://patentgrep.com/patent/US20080104904A1 ## CPC - E06B 3/6617: {one of the panes being larger than another} - E06B 3/308: {Wing frames covered on the outside by a rigidly-mounted outer frame} - E06B 3/325: {Wings opening towards the outside} - Y10T 29/49623: Static structure, e.g., a building component - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a window (11, 11a), which can be opened in an outward manner, comprising a casement (13) and stepped glazing (15) which is received in the casement (13). The stepped glazing (15) comprises at least two window panes (19, 23) which are arranged at a distance from each other, said window panes being an inner pane and an outer pane. The casement (13) is essentially formed by an L-shaped casement profile (25) having a first and a second extremity (27, 29). The inner window pane (19) is arranged on the side of the first extremity (27) of the casement profile (25) which is oriented towards the glazing and is rigidly connected thereto by means of a first adhesive connection (33). The outer window pane (23) of the stepped glazing is rigidly connected to the front side (31) of the casement profile (25) which is oriented in an outward manner by means of a second adhesive connection (35). The layer thickness of the second adhesive connection (35) is greater than the first adhesive connection (33). The first adhesive connection (33) is achieved in an advantageous manner by an adhesive strip and the second by a liquid adhesive material. ## Claims ### Claim 1 A window sash comprising a casement formed substantially by an L-shaped casement profile having a first leg and a second leg, the first legs of opposing casement profiles being oriented toward one another; and stepped glazing received in the casement and having at least two windowpanes which are set apart from one another by at least one space and the insides of which are arranged facing one another and the outsides of which are arranged remote from one another, comprising an inner windowpane and an outer windowpane, which outer windowpane has an edge protruding beyond the inner windowpane, the inside of which edge is rigidly connected to an end face of the second leg of the casement profile by an outer adhesive connection, wherein whereby the outside of the inner windowpane of the stepped glazing is rigidly connected to the first leg of the casement profile by an inner adhesive connection. ### Claim 2 (depends on 1) The window sash according to claim 1, wherein the outer adhesive connection forms a more resilient connection between the stepped glazing and the casement than the inner adhesive connection. ### Claim 3 (depends on 1) The window sash according to either claim 1 wherein a rebate depth, defined by the second leg, of the casement profile is smaller than the thickness of the stepped glazing less the thickness of the outer windowpane and in that the outer adhesive connection has a greater layer thickness than the inner adhesive connection. ### Claim 4 (depends on 1) The window sash according to claim 1, wherein an adhesive of the inner or outer adhesive connection has at most a Shore hardness of A 90 or D 50. ### Claim 5 (depends on 1) The window sash according to claim 1, wherein an adhesive of the inner or outer adhesive connection has a combined tension and shear resistance of greater than 1 MPa but at most 12 MPa. ### Claim 6 (depends on 1) The window sash according to claim 1, wherein the the outer adhesive connection is formed by a heat-reactive polyurethane adhesive. ### Claim 7 (depends on 1) The window sash according to claim 1, wherein the the outer adhesive connection is formed by a two-component adhesive, in particular an acrylate reactive adhesive. ### Claim 8 (depends on 1) The window sash according to claim 1, wherein the, inner adhesive connection, is formed by a double-sided adhesive strip. ### Claim 9 (depends on 1) The window sash according to claim 1, wherein the edge of the outer windowpane is provided with an opaque layer or coating, at least in the region of the adhesive connection. ### Claim 10 (depends on 1) The window sash according to claim 1, wherein the first leg has an end edge extending along the inner windowpane and in that there is provided between the end edge and the inner windowpane a rebate in the casement, in which a sealing strip or a sealing compound is received. ### Claim 11 (depends on 1) The window sash according to claim 1, wherein the casement profile is a hollow profile. ### Claim 12 (depends on 1) The window sash according to claim 1, wherein the casement profile is a plastics material profile, in particular a plastics material profile reinforced by a metal profile. ### Claim 13 (depends on 1) The window sash according to claim 1 further comprising a window frame to which the window sash is pivotably articulated by window fittings. ### Claim 14 (depends on 13) The window sash according to claim 13, wherein the length and the width of the window frame substantially correspond to the length and width of the outer windowpane. ### Claim 15 (depends on 12) The window sash system according to claim 12, wherein an opening of the window frame and an opening of the casement and, in particular, also an opening of the stepped glazing correspond in alignment. ### Claim 16 (depends on 13) The window sash according to claim 13, wherein the window frame has an L-shaped configuration, a base leg extending parallel to the first leg of the casement and a soffit leg extending from the base leg up to the outer windowpane. ### Claim 17 (depends on 16) The window sash according to claim 16, wherein between the soffit leg of the L-shaped window frame and the L-shaped casement profile is defined an interval in which window fittings are received. ### Claim 18 (depends on 13) The window sash according to claim 13, wherein the edge of the outer windowpane forms a projection protruding beyond the casement profile and rests with the projection against an end face of the soffit leg of the window frame when the window is closed. ### Claim 19 (depends on 18) The window sash according to claim 18, wherein a sealing path is provided on the side of the projection that is oriented toward the window frame. ### Claim 20 (depends on 13) The window sash according to claim 13, wherein at least one groove for receiving a seal is provided on a side of the base profile of the window frame that is oriented toward the window sash. ### Claim 21 (depends on 15) The window sash according to claim 15, wherein the soffit leg is formed by a plastics material profile. ### Claim 22 (depends on 21) The window sash according to claim 21, wherein vertically arranged soffit legs are formed by a first plastics material profile having a guide rail for the fitting and at least a lower of horizontally arranged soffit legs is formed by a plastics material profile configured for a sheet metal flashing. ### Claim 23 A window system comprising: a window frame and a window sash, the window sash being articulated to the window frame so as to be pivotable about a horizontal pivot axis by means of a window fitting and configured so as to open outward; the window frame having a base leg extending parallel to a window plane and a soffit leg extending perpendicularly to the window plane; the window sash having a casement and glazing received in the casement and arranged between the soffit legs and resting against the base leg so as to produce a seal when the window is closed; whereby there is formed in the window sash a projection which protrudes beyond the casement on at least two opposing sides and rests against the soffit leg of the window frame so as to produce a seal when the window is closed. ### Claim 24 (depends on 23) The window system according to claim 23, further comprising a peripheral projection. ### Claim 25 (depends on 23) The window system according to claim 23, wherein the window glazing is stepped glazing comprising at least two windowpanes, an inner and an outer windowpane, arranged at a distance from one another, and in that the projection is formed by the outer windowpane. ### Claim 26 (depends on 23) The window system according to claim 23, wherein the projection is provided on the side of the window frame with a seal or a sealing path. ### Claim 27 A method for the manufacture of an outwardly opening window system, comprising: providing a casement consisting of casement profiles which are L-shaped in cross section and each have a first leg and a second leg, the first legs of opposing casement profiles being oriented toward one another, and stepped glazing which fits into the casement profile and comprises at least two windowpanes, an inner and an outer windowpane, which are arranged at a distance from one another and the inner faces of which face one another and the outer faces of which are remote from one another, and producing a peripheral inner adhesive connection between the outer face of the inner windowpane and the first leg and an outer adhesive connection between the inside of the outer windowpane and the second leg the casement profile. ### Claim 28 (depends on 27) The method according to claim 27, further comprising applying an adhesive as a thin layer on the side of the first leg of the casement profile that is oriented toward the windowpane. ### Claim 29 (depends on 27) The method according to claim 27, further comprising applying an adhesive as a resilient layer to an end face of the second leg of the casement profile. ### Claim 30 (depends on 27) The method according to claim 27, further comprising inserting the stepped glazing as a whole into the casement provided with adhesive. ### Claim 31 A method for the manufacture of an outwardly opening window, comprising: providing a casement consisting of casement profiles which are L-shaped in cross section and each have a first and a second leg, the first legs of opposing casement profiles being oriented toward one another, and stepped glazing which fits into the casement and comprises at least two windowpanes, an inner and an outer windowpane, which are arranged at a distance from one another and the insides of which face one another and the outsides of which are remote from one another, the outer windowpane having a protruding edge relative to the inner windowpane; applying an adhesive to the first legs of the casement profiles or to the outside of the inner windowpane for generating an inner, peripheral adhesive connection between the inner windowpane and the casement, in particular by an adhesive strip, inserting the stepped glazing into the casement; and introducing an adhesive between the end face of the second legs of the casement profiles and the edge of the outer window glass for generating a second adhesive connection between the second legs and the outer windowpane. ### Claim 32 (depends on 31) The method according to claim 31, further comprising proving the first adhesive connection with a lower resilience and the outer adhesive connection with a higher resilience. ### Claim 33 (depends on 31) The method according to claim 31, further comprising choosing the rebate depth of the casement profile so as to be smaller than the thickness of the stepped glazing less the thickness of the outer window glass. ### Claim 34 (depends on 27) The method according to claim 27, further comprising arranging, the profile comprising the inserted multiple glazing approximately horizontally for drying and curing the adhesive layers. ### Claim 35 (depends on 27) The method according to claim 27, further comprising coating the surfaces of the casement and the stepped glazing that are to be connected using adhesive beforehand with a primer.