# US 7,836,643 B2 · Window > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,836,643 B2 - Document ID: US7836643B2 - Status: Granted - Kind: B2 - Application number: 11/665,904 - Filed: 2005-10-20 - Published: 2008-05-08 - Granted: 2010-11-23 - Earliest claimed: 2004-10-20 - Assignees: Walch AG - Inventors: Christian Walch - Web page: https://patentgrep.com/patent/US7836643B2 ## 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 a single 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, 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 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 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 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 casement profile is a hollow profile. ### Claim 11 (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 12 (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 13 (depends on 12) The window sash according to claim 12, wherein the length and the width of the window frame substantially correspond to the length and width of the outer windowpane. ### Claim 14 (depends on 11) The window sash according to claim 11, 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 15 (depends on 12) The window sash according to claim 12, 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 16 (depends on 15) The window sash according to claim 15, 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 17 (depends on 12) The window sash according to claim 12, 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 18 (depends on 17) The window sash according to claim 17, wherein a sealing path is provided on the side of the projection that is oriented toward the window frame. ### Claim 19 (depends on 12) The window sash according to claim 12, 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 20 (depends on 14) The window sash according to claim 14, wherein the soffit leg is formed by a plastics material profile. ### Claim 21 (depends on 20) The window sash according to claim 20, 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.